# The system of passive location of a moving object

(57) Abstract:

The inventive system passive location of a moving object contains the direction finder 1 synchronizer 2, the set of coefficients 3, the buffer storage device 4, a block for solving systems of linear algebraic equations 5, block median assessment 6, the computing unit guides of the cosines of the velocity vector of the curvilinear motion of the object 7. 1-3-4-5-6-7: 1-2-4-7: 2-5: 2-6: 2-7. 13 the sludge. The invention relates to radar systems and can be used, for example, in navigation, meteorology, geodesy.It is known device for determining the velocity vector of a moving object, which involves the use of patterns of representation of the acceleration vector and the vector of absolute angular velocity of rotation of the natural triple in the projections on the axes of the moving coordinate system associated with the aircraft. However, the device is applicable only in navigation systems.It is known device for determining the velocity of movement of the object, measuring the Doppler velocity with subsequent processing. The disadvantage of this device is the need for measurement at the receiving point of the radial velocity, or Yes the technical nature of the invention is a device for the passive location of a moving object, allows you to determine the direction cosines of the velocity vector of uniform and uniformly accelerated motion of the object containing the direction finder, the synchronizer.However, this device has limited functionality, as it allows to determine the direction cosines of the velocity vector curvilinear motion of the object.The purpose of the invention to enhance the functionality by simultaneously determining the direction of the curvilinear motion of the object.This is achieved by the fact that in the device of the passive location of a moving object, containing the direction finder, the synchronizer entered the shaping unit coefficients, a buffer memory device, a unit for solving systems of linear algebraic equations, block median assessment, the evaluation unit guides of the cosines of the velocity vector curvilinear motion of the object, while the first output signal is connected to the clock input, the second output signal is connected to the input of the processing unit coefficients, the output of which is connected to the first input of the buffer storage device, the output of which is connected to the first input of the block for solving systems of linear algebraic uravnenii the om calculation module guides of the cosines of the velocity vector of the curvilinear motion of the object, the output which is the output device, the first, third outputs of the synchronizer connected respectively to the second inputs of the buffer storage device and a unit for solving systems of linear algebraic equations, the second output of the synchronizer is connected to the second input of the block median assessment and with the third input of the computing unit guides of the cosines of the velocity vector curvilinear motion of the object, the output buffer of the storage device is connected to the second input of the computing unit guides of the cosines of the velocity vector curvilinear motion of the object.A device (prototype) determining the guides of the cosines of the velocity vector estimated angular coordinates and their derivatives in time, provided that the object is moving in a straight evenly or uniformly accelerated. In practice, however, this model has limited application, since it is valid only for small time intervals.Let the Cartesian YZ coordinate system whose origin coincides with the geometric centre of the direction finder, kinematics goal describes a temporary polynomial of the k-th orderxa

_{i}t

^{i}, yb

_{i}t

^{i}, zc

_{i}t

^{i}, (1)

where da

j (2)

where a

_{j}0.After simple transformations we represent the expression (2) in the equivalent form

(3)

Obviously, to find unknown quantities b

_{i}/a

_{j}with

_{i}/a

_{j},i=, a

_{i}/a

_{j},i=, i j taking into account the expression (3) is sufficient to solve the following system of linear algebraic equations:

(4)

(5)

where

_{k}(t

_{k}),

_{k}(t

_{k}), k , t

_{k}moments of time, which is measured bearings.Thus, taking into account expressions (4), (5) calculated ratios to determine the desired guiding vectors of curvilinear motion of the object have the following

blowing final form:

(6)

where desired value of a

_{k}/a

_{j}b

_{k}/a

_{j}c

_{k}/a

_{j}are found as solutions of systems of linear algebraic equations (4), (5). When writing formulas of the system (6) is taken into account that

x

^{(i)}= t

^{k-i}a

_{k}, y

^{(i)}= b

_{k}< / BR>

z

^{(i)}= t

^{k-i}c

_{k}.The introduction of additional blocks and connections allows together with common features to provide simultaneous measurement of the direction of the curvilinear motion of an object that extends the functionality of the proposed device.In Fig. 1 shows a block diagram of a system for the passive location of a moving object on which the first output signal 1 is connected to the clock input 2, the second output signal 1 is connected to the input of the processing unit coefficients 3, the output of which is connected to the first input buffer of the storage device 4, the output of which is connected to the first input unit 5 solving systems of linear algebraic equations, the output of which is connected to the first input unit median assessment 6, the output of which is connected to the first input of the block 7 to calculate the guides of the cosines of the velocity vector of the curvilinear motion of the object, the output which is the output device is the first device 4 and unit 5 solving systems of linear algebraic equations, the second output of the synchronizer 2 is connected to a second input of the block median assessment 6 and the third input unit 7 calculate the guides of the cosines of the velocity vector curvilinear motion of the object, the output buffer of the storage device 4 is connected to a second input of the block 7 to calculate the guides of the cosines of the velocity vector curvilinear motion of the object.In Fig. 2 presents a diagram of a possible implementation of block-forming factors 3, in which the first bus 1

_{1}input connected to inputs of the first 8

_{1}. (k 1)-th 8

_{k-1}converters codes and simultaneously forms the output 1

_{1}unit 3, the second bus 1

_{2}input connected to inputs of the k-th 8

_{k}and (k + 1)-th 8

_{k+1}converters codes, the third bus 1

_{3}input connected to the input of the (k + 2)-th 8

_{k+2}the code Converter, the first bus 1

_{3}input connected to the first input of the first 9

_{1}multiplier, the outputs of the first 8

_{1}.(k 1)-th 8

_{k-1}converters codes are connected respectively to the first inputs of the second 9

_{2}.k-9

_{k}perennity and simultaneously form a outputs 1

_{2}.1

_{k}unit 3, the output of the k-th 8

_{k}the code Converter connected to the second inputs of the first 9

_{1}.k-9

_{k}p is replaced with the first input of the (k + 1)-th 9

_{k+1}multiplier, the outputs of the first 8

_{1}. (k 1)-th 8

_{k-1}converters codes are connected respectively to the first inputs (k + 2)-th 9

_{k+2}.(2k)-th 9

_{2k}multiplier products, the outputs of the (k + 1)-th 8

_{k+1}and (k + 2)-th 8

_{k+2}converters codes connected respectively with the first and second inputs (2k + 1)-th 9

_{2k+1}multiplier, the output of which is connected to the second inputs of the (k + 1)-th 9

_{k+1}.(2k)-th 9

_{2k}multiplier products and at the same time forms the output 1

_{3K+2}unit 3, the outputs of the first 9

_{1}.k-9

_{k}multiplier products formed respectively 1

_{k+1}th. 1

_{2k}th output unit 3 outputs (k + 1)-th 9

_{k+1}. (2k)-th 9

_{2k}multiplier products formed respectively 1

_{2k+2}th.1

_{3k+1}th outputs of the block 3.In Fig. 3 shows a possible implementation of the buffer storage device 4. When this first 1

_{1}.(4k + 2)-I 1

_{4k+2}tires first input buffer storage devices are the first inputs, respectively, of the first 4

_{1}. (4k + 2) th 4

_{4k+2}scratchpad memory devices (POPS). Bus 2

_{1}the second input is connected to the second inputs of the first 4

_{1}.(4k + 2) th 4

_{4k+2}The POPS. Input 2

_{2}connected to the third inputs of the first 4

_{1}.(4k + 2) th 4

_{4k+2}The POPS. Outputs .4

_{4k+2,2 k+1}). The third bus 2

_{3}the second input is connected to the second inputs of registers 4

_{1,1}.4

_{4k+2,2 k+1}, the outputs of which form the outputs 1

_{1,1}.1

_{8,2 k+1}block 4.In Fig. 4 shows a diagram of a possible implementation of block for solving systems of linear algebraic equations 5, which consists of two devices for solving systems of linear algebraic equations (ORSLOW). The first bus 1

_{1}the first input is connected with the first inputs of the first 5

_{1}and the second 5

_{2}ORSLOW. The second 1

_{2}and the third 1

_{3}tires first input connected respectively to the second inputs of the first 5

_{1}and the second 5

_{2}ORSLOW. The second input bus connected to the third inputs of the first 5

_{1}and the second 5

_{2}ORSLOW. The first outputs of the first 5

_{1}and the second 5

_{2}ORSLOW form first 1

_{1}bus output unit 5. The second outputs of the first 5

_{1}and the second 5

_{2}ORSLOW form respectively a second 1

_{2}and the third 1

_{3}bus output unit 5.In Fig. 5 shows a diagram of a possible implementation of block median assessment 6, which consists of three nodes median assessment 6

_{1}.6

_{3}. First 1

_{1}bus the first input and the second input bus connected respectively is 1

_{1}unit 6. The second 1

_{2}and the third 1

_{3}bus input are connected respectively to the inputs of the second 6

_{2}and the third 6

_{3}nodes median assessment, the outputs of which form, respectively, 1

_{2}th and 1

_{3}th output unit 6.In Fig. 6 is a diagram of a possible implementation of the first 6

_{1}site median assessment, which consists of k channels, the median assessment, and the tires 1

_{1}.1

_{k}the input node 6

_{1}respectively connected with the first inputs of the first 6

_{1,1}.k-6

_{1,k}channels median assessment, the outputs of which form respectively the outputs 1

_{1}.1

_{k}site median assessment 6

_{1}. The tire of the second output unit 6

_{1}connected with the second input channel 6

_{1,1}.6

_{1k}the median assessment.In Fig. 7 is a diagram of a possible implementation of the median channel estimation 6

_{1},i, i=. First 1

_{1}and the second 1

_{2}tires first input connected respectively with the first and second inputs of the multiplexer 10, the output of which is connected with the median filter 11, the output of which is the output of the channel median assessment 6

_{1,i}, i 1,k. The second input bus connected to the third input of the multiplexer 10.In Fig. 8 PR>SUB>+

_{1}bus input are connected respectively to the inputs of the first 6

_{i},

_{1}.(k + 1)-th 6

_{i},

_{k+1}median filters, the outputs of which form respectively the outputs 1

_{1}.1

_{k}

_{+}

_{1}site median assessment 6

_{i}i 2,3.In Fig. 9 is a diagram of a possible implementation of a computing unit guides of the cosines of the velocity vector curvilinear motion of the object (BUNK BWW) 7. When this tire 1

_{1}the first input is connected to the first input of the first 7

_{1}the computing device, the second input of the second 7

_{2}the computing device, the third input of the third 7

_{3}the computing device, the tire 1

_{2}the first input is connected to the second inputs of the first 7

_{1}and the third 7

_{3}devices, computing, and with the first input of the second 7

_{2}the computing device, the tire 1

_{3}the first input is connected to third inputs of the first 7

_{1}and the second 7

_{2}devices, computing, and also to the first input of the third 7

_{3}the computing device, the tires of the second and third inputs connected respectively to the fourth and fifth inputs of the first 7

_{1}. the third 7

_{3}of computing devices, the outputs of which form respectively the outputs 1

_{1}.1

_{3}BVN is th first bus, second and third inputs connected respectively to the first inputs of the first 12

_{1}the second 12

_{2}the third 12

_{3}calculators, the tire of the fourth input connected to the second inputs of the first 12

_{1}the second 12

_{2}the third 12

_{3}calculators, the tire of the fifth input connected to the third inputs of the first 12

_{1}the second 12

_{2}the third 12

_{3}the solvers. The output of the first 12

_{1}the computer is connected to the first input of the code Converter 13, the output of which is connected to the first input of the first multiplier 14 and the second input of the second multiplier 15, which outputs through the second 16 and third converters 17 codes connected respectively with the second and third inputs of the adder 18, the output of which through 19 fourth and fifth 20 converters codes connected with the output device of the computing 7

_{i}, i=. The output of the permanent memory (ROM) 21 connected to the first input of adder 18. The outputs of the second 12

_{2}and the third 12

_{3}calculators are connected respectively to the second input of the first multiplier 14 and the first input of the second multiplier 15.In Fig. 11 is a diagram of a possible implementation of the transmitter 12

_{i}, i=. First 1

_{1}. k-I 1

_{k}tires first WMOs.k-I 2

_{k}bus second input connected respectively to the second inputs of the first 22

_{1}.k-22

_{k}multiplier products, the outputs of which are connected respectively to the first inputs (k + 1)-th 22

_{k+1}.(2k)-th 22

_{2k}multiplier products, the outputs of which are connected respectively with the first.the k-th inputs of the adder 23, the output of which forms the output of the transmitter 12

_{i}, i=. The tire of the third input through the first 24

_{1}.k-th 24

_{k}the converters are connected to second inputs of the (k + 1)-th 22

_{k+1}.(2k)-th 22

_{2k}multiplier products.In Fig. 12 is a diagram of a possible implementation of the Converter 24

_{i}, i= .Bus 1

_{1}input is connected to the second input of the adder 25 and through the first 26 of the code Converter to the first input of the multiplier 27, the output of which forms the output of the inverter 24

_{i}, i=. Bus 1

_{2}input connected to the first input of the adder 25, the output of which through the second 28 and third 29 converters codes connected with the second input of the multiplier 27.In Fig. 13 is a diagram of a possible implementation of the synchronizer 2. The clock input 2 is connected to the counting input of the first counter 30, and through the first delay element 31 to the first input of the first flip-flop 32, with a second input of the first is 5, the output of which is connected to a counter input of the third counter 36, the output of which is connected to the second inputs of the register 37, a comparator 38, with the first input of the first 39

_{1}adder, as well as through the first 40

_{1}.(2k)- 40

_{2k}frequency multipliers with the first inputs of the second 39

_{2}. (2k + 1)-th 39

_{2k+1}the sum of tori. The outputs of the first 39

_{1}. (2k+1)-th 39

_{2K+1}adders are connected respectively with the first.(2k + 1)-th inputs of the first multiplexer 41, the output of which is connected to the first input of the second multiplexer 42. The first output of the first flip-flop 32 is connected to the third input of the second multiplexer 42 and the second input of the first element And 43, the output of which is connected to the first input of the OR element 34.The generator output clock pulses 44 is connected to a second input of the second element And 45, with the first input of the first element And 43, to the first input of the fourth counter 46, the output of which is connected to the first input of the fifth counter 47 with the input of the decoder 48, 49 through the third and fourth 50 elements of the delay of the first and second inputs of the second trigger 51, and with (2k + 2)-th input of the first multiplexer 41. The output of the first counter is connected to a second input of the second multiplexer 42, the second output of the first flip-flop 32 is connected to the fourth is showing connected to the first input of the comparator 38, the output of which is connected to the first input of the second element And 45, a second input of the fourth counter 46, a second input of the fifth counter 47, the output of which is connected to the second inputs of the first 39

_{1}.(2k + 1)-th 39

_{2k+2}adders. The output of the second multiplexer 42, the first and second outputs of the first flip-flop 32, the output of the OR element 34, the output of the decoder 48 is formed respectively outputs 1

_{1}.1

_{5}the first output of the synchronizer 2. The first and second outputs of the second trigger 51, the outputs of the first 52 and second 53 of permanent storage devices to form respectively the outputs 2

_{1}.2

_{4}the second output of the synchronizer 2. The output of the fourth counter 46 produces a third output of the synchronizer 2.The system of passive location of a moving object (see Fig. 1) works as follows.Received on the direction finder 1 smoothed values of the bearings is fed to the input of the processing unit 2 coefficients (see Fig. 2). Codes generated coefficients on the control signals from the first output of the synchronizer 2 is written in the buffer memory (BLT) 4 (see Fig, 3). In the intervals between beats of write BLT 4 is in the reading mode and on the measure reading information from the POPS 4

_{1}. 4

_{4k+2}The SUB> registers 4

_{1,1}.4

_{4k+2,2 k+1}controls the decoder 48 synchronizer 2 (see Fig. 13). In the registers 4

_{1,1}.4

_{k,2k+1}and 4

_{3k+3,1}.4

_{4k+2,2 k+1}recorded time codes t

_{1}

^{i}.t

_{2k+1}

^{i}i= outputs 1

_{1}.1

_{k}processing unit coefficients 3 registers 4

_{k+1},

_{1}.4

_{2k+1,2 k+1}codes t

_{1}

^{i}tg

_{1}.t

_{2k+1}

^{i}tg

_{2k+1}i= outputs 1

_{k+1}. 1

_{2k+1}unit 3 registers 4

_{2k+2,1}.4

_{3k+2,2 k+1}codes t

^{1i}sec

_{1}1tg

_{1}t

_{2k+1}

^{i}sec

_{2k+1}tg

_{2k+1}i= outputs 1

_{2k+2}.1

_{3k+2}unit 3.After recording codes in registers 4

_{1,1}.4

_{4k+2,2 k+1}last on the control signal from the synchronizer 2 is written into the block for solving systems of linear algebraic equations (BRESLAU) 5 (see Fig. 4), which consists of two devices for solving systems of linear algebraic equations (ORSLOW) 5

_{1}and 5

_{2}. Codes numbers "1", "0" and "-1" (system (4), (5)) rely "protective" in the appropriate registers ORSLOW 5

_{1}and 5

_{2}in the manufacture of the device. On a start signal, which is supplied from the third output clock 2 input control units, ORSLOW 5

_{1}and 5

_{2}last atributy is 1 block median assessment 6 (see Fig. 5), which carries out the statistical estimation of calculated coefficients, as in real conditions, the process of finding inevitably accompanied fluctuation errors. Assessment of required factors from the output of the block median assessment 6 receives at the first input of the computing unit guides of the cosines of the velocity vector curvilinear motion of the object (BUNK BWW) 7 (see Fig. 9). To the second input unit 7 receives the codes are proportional to the moments of time t

_{1}

^{i}.t

_{2k+1}

^{i}output BLT 4. The block structure 7 hardware implements expression system (6). Consequently, at the output there are codes, guides proportional to the cosines of the velocity vector of an object moving along a curved trajectory.Consider the operation of the processing unit coefficients 3 (Fig. 2). For definiteness put in expressions (2).(6) j 0, i.e., a

_{j}a

_{0}. This is because the choice of the beginning of the coordinate system can always get values and

_{0}0. On input 1

_{1}processing unit coefficients 3 enters code, is proportional to the current time t on input 1

_{2}enters code, is proportional to the azimuth of the target input 1

_{3}enters code, is proportional to the.t

^{k}at the output of the code Converter 8

_{k}code that is proportional to tg at the output of the code Converter 8

_{k+1}code, sec proportional to the output of the code Converter 8

_{k+2}code that is proportional to tg . At the output of the multiplier 9

_{2k+1}is the code that is proportional to tg sec multiplier products 9

_{1}.9

_{k}code, proportional ttg , multiplier products 9

_{k+1}.9

_{k}code, proportional ttg sec . Thus at time t

_{2k+1}outputs 1

_{1}.1

_{3k+2}unit 3 completes the formation of the coefficients of linear algebraic equations (4) and (5).Consider a block of median assessment 6 (see Fig. 5). Because output 1

_{1}BRESLAU 5 is the statistical redundancy through a twofold definition of the coefficients a

_{i}/a

_{0}, i=, block median assessment contains the first node 6

_{1}(see Fig. 6) the median assessment, which consists of k channels median estimation (see Fig. 7). Codes calculated coefficients a

_{i}/a

_{0}output 1

_{1}BRASLAU 5 are received at inputs 1

_{1}, 1

_{2}each channel of the median assessment. Under the influence of control signals from the second output of the synchronizer 2 multiplexer 10 succession of the LAU 5

_{1}and 5

_{2}. The second 6

_{2}and the third 6

_{3}nodes median estimation (see Fig. 8) carry out the statistical estimation of the coefficients of b

_{i}/a

_{0}and C

_{i}/a

_{0}respectively. The coefficients b

_{i}/a

_{0}do output 1

_{2}BRESLAU 5, the coefficients with

_{i}/a

_{0}output 1

_{3}BRASLAU 5. Nodes median assessment 6

_{2}and 6

_{3}(see Fig. 8) consist of k + 1 median filters. Median filters are chosen because they allow you to get resistant to abnormal errors of measurement values of the estimates of required factors and do not require a priori knowledge of the model of noise in the channels of observation.Consider the operation of the computing unit guides of the cosines of the velocity vector curvilinear motion of the object (BUNK BWW) 7 (see Fig. 9), which consists of three computing devices 7

_{1}.7

_{3}(see Fig. 10). The first computing device 7

_{1}the hardware implements the expression

cos

_{x(i)}= second 7

_{2}and the third 7

_{3}the device is similar to expression (6). On the first inputs of the computers 12

_{1}.12

_{3}enter codes, respectively, are proportional to the coefficients and

_{i}/a

_{0}b

_{i}/a

_{0}c

_{i}/a

_{0}on second input wyczolkowski transformation y 1/x, is the code that is proportional to 1/(x

_{i}/a

_{0}), the output of multiplier products 14 and 15 codes, proportional to y

^{(i)}/x

^{(i)}and z

^{(i)}/x

^{(i)}accordingly, at the output of the converters codes 16 and 17 codes proportional to (y

^{(i)}/x

^{(i)})

^{2}and (z

^{(i)}/x

^{(i)})

^{2}accordingly, at the output of the adder 18 code, is proportional to l1 +(y

^{(i)}/x

^{(i)})

^{2}+ (z

^{(i)}/(x

^{(i)})

^{2}} at the output of the code Converter 19 code proportional to the Converter output codes code 20 is proportional to 1. The first transmitter 12

_{1}the computing device 7

_{i}the hardware implements the expression

x

^{(i)}/a

_{o}= t

^{k-i}(a

_{k}/a

_{o}), the second 12

_{2}and the third 12

_{3}solvers similar expressions for y

^{(i)}/a

_{0}and z

^{(i)}/a

_{0}system (6) (see Fig. 11). In the multiplier products 22

_{1}.22

_{k}is the multiplication of codes corresponding coefficients to the input 1

_{1}.1

_{k}and time codes received from inputs 2

_{1}.2

_{k}transmitter 12

_{i}. At the output of the multiplier products 22

_{2k+1}.22

_{2k}there are codes, proportional to k!/(k i)!t

^{k-i}(a

_{k}/a

_{0}), which are summed in the adder 23. Generating codes k!/(k i)! carry out pre the lei do the values of k and i, respectively. The adder 25 generates at its output code is proportional to (k i), the Converter output codes 26 and 28 are codes that are proportional to k! and (k i)! accordingly, at the output of the code Converter 29 of the code is proportional to 1/(k-i)! at the output of the multiplier 27 code is proportional to k!(k i)!

Consider the operation of the synchronizer 2 (see Fig. 13). The pulses from the first output signal received at the counting input of the counter 30, which generates an address code supplied to the second input of the multiplexer 42.The pulses from the first output signal 1 goes to the second input of the trigger 32, the output signal 2 which sets the POPS 4

_{1}.4

_{4k+2}in the recording mode. At the first input of the trigger 32 receives the pulses from the first output signal 1 through the delay element 31 forming output 1 trigger 32 signals to read information from the POPS 4

_{1}.4

_{4k+2}. Pulses from the output of the circuit 34 takeroot the POPS 4

_{1}.4

_{4k+2}. After counting the (2k + 1) pulses coming from the direction finder 1, the output of the counter 35 receives the impulse overflow, which through the counter 36 is supplied to the frequency multipliers 40

_{1}.40

_{2k}while the multiplier 40

_{1}is a multiplier of two, the multiplier 40

_{2}on three.the multiplier 40

_{2k1}.39

_{2k+1}by increasing their content per unit. Depending on the state of the output of the counter 46 to the output bus of the multiplexer 41 is switched one of the (2k + 1) inputs. As a result, the output of the multiplexer 41 are sequentially formed codes address maximally spaced in time measurements, which achieves the best accuracy characteristics determine the guides of the cosines of the velocity vector curvilinear motion of the object. The pulses from the outputs of the trigger 32 to control operation of the multiplexer 42, the pulse recording output 2 trigger 32 connects to the output of the multiplexer 42, the outputs of the counter 30. The decoder 48 controls the order of reading data from the registers 4

_{1,1}.4

_{4k+2,2 k+1}. The pulse output of the counter 46 is supplied to the third output of the synchronizer 2 and starts BRESLAU 5, and also through the delay elements 49 and 50 is supplied to the first and second inputs of the trigger 51. With the delay element 49

_{ass}

^{*}= t

_{BRESLAU}

_{5}where t

_{BRESLAU}

_{5}the time of calculation of coefficients in the block 5, the delay element 50

_{ass}>

_{ass}

^{*}. Thus, the first and second outputs of the trigger 51 is formed control signals 2

_{2}and 2

_{1}relevant to the Ana codes proportional to the values of k and i, respectively, which are fed to the input of inverter 24

_{i}.All units and components of the proposed device passive location of a moving object can be easily implemented on the basis of standard units of computing: the counters on the basis of CIE, registers on the basis of CIR; adders based KIM, scheme, OR on the basis of CLE, triggers based KTM etc.Thus, the expanded functionality of the device by simultaneously determining the guides of the cosines of the velocity vector curvilinear motion of the object. The SYSTEM of PASSIVE LOCATION of a MOVING OBJECT, containing the direction finder and the synchronizer, wherein, with the intent of determining the direction of the curvilinear motion of the object is entered forming unit coefficients, a buffer memory device, a unit for solving systems of linear algebraic equations, block median assessment, the evaluation unit guides of the cosines of the velocity vector curvilinear motion of the object, while the first output signal is connected to the clock input, the second output signal is connected to the input of the processing unit coefficients, exit km block for solving systems of linear algebraic equations, the output of which is connected to the first input unit median estimation, the output of which is connected to the first input of the computing unit guides of the cosines of the velocity vector of the curvilinear motion of the object whose output is the output of the system is passive location, the first and third outputs of the synchronizer connected respectively to the second inputs of the buffer storage device and a unit for solving systems of linear algebraic equations, the second output of the synchronizer is connected to the second input of the block median assessment and the third input of the computing unit guides of the cosines of the velocity vector of the curvilinear motion of the object, a second input connected to the output of the buffer storage device.

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7 dwg

FIELD: finding of azimuth of radio emission source (RES) in wide-base direction finding systems.

SUBSTANCE: angle of azimuth of RES is measured with high degree of precision due to elimination of methodical errors in direction finding caused by linearization of model electromagnet wave propagation wave front. As surface of RES location the plane is used which has RES line of location which has to be crossing of two hyperbolic surfaces of location corresponding to difference-time measurement. Method of RES direction finding is based upon receiving its signal by three aerials disposed randomly, measuring of two time differences of RES signal receiving by aerials which form measuring bases and subsequent processing of results of measurement to calculate values of RES angles of azimuth and coordinates of point through which the RES axis of sight passes. The data received are represented in suitable form. Device for realization of the method has three aerials disposed at vertexes of random triangle, two units for measuring time difference of signal receiving, computing unit and indication unit. Output of common aerial of measuring bases is connected with second inputs of time difference meters which receive signals from outputs of the rest aerials. Measured values of time differences enter inputs of computing unit which calculates values of RES angle of azimuth and coordinates of point through which the RES axis of sight passes. Data received from output of computing analyzing unit enter indication unit intended for those data representation.

EFFECT: widened operational capabilities of direction finder.

2 cl, 7 dwg

FIELD: radio engineering.

SUBSTANCE: device has receiver, distance converter, synchronizer, azimuth and location angle transducer unit, indicator unit, TV distance transducer, TV coordinator unit, secondary processing unit and unit composed of two adders.

EFFECT: high accuracy in determining angular coordinates in optical visibility zone.

1 dwg

FIELD: the invention refers to measuring technique and may be used for passive detection and direction finding of communications systems, location and control, using complex signals.

SUBSTANCE: the technical result is achieved due to using of the reliability criterion of detection-direction finding and solution of the problem of the "reference signal" at compression of signal spectrum with low spectral power density of an unknown form. That approached quality of matched filtering at low signal-to-noise ratios to maximum attainable quality for the completely known reference signal. At that sensitivity of detection and direction finding of signals with extended spectrum increases in relation to the prototype in N times where N - a number of antennas of the receiving array.

EFFECT: increases effectiveness of detection-direction finding of the sources radiating broad class signals with extended spectrum of unknown form having energy and time secretiveness.

2 cl, 1 dwg

FIELD: physics.

SUBSTANCE: method involves reception, emission and relay of a primary and terminal radio signals between a spacecraft, primary station and an alternate station. An additional primary radio signal and an additional terminal radio signal is further relayed from the spacecraft to the primary station where these signals are received. Distance between the spacecraft, primary and alternate stations is determined from the time interval between emission of the signal and reception of the primary and additional primary signals and reception of terminal, auxiliary terminal, additional terminal and auxiliary additional terminal radio signals at the primary station taking into account Doppler frequency shift.

EFFECT: more accurate determination of distance between spacecraft and stations.

6 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Proposed system for transport facility suspension comprises first and second transceivers mounted on transport facility body and suspension element. First transceiver generates first electromagnetic wave to be received by second transceiver. On the bases of the first wave, second transceiver defines the distance to the first transceiver. Second transceiver generates second electromagnetic wave to be sent to first transceiver. Besides, is modulates said second electromagnetic wave to transmit data on said distance, and, for example on pressure and temperature.

EFFECT: accelerated data acquisition and transmission, higher reliability.

12 cl, 6 dwg

FIELD: physics.

SUBSTANCE: signals are received on reception points in different frequency ranges and in different sectors, where the number of sectors in different frequency ranges may not coincide, after which linear and analogue to digital converters are used generate a sequence of digital readings from continuous signals in different frequency ranges received from the reception points, based on which the set of signals received in one frequency range and in another sectors are combined into a radar image which is a two-dimensional matrix, where the number of columns corresponds to the number of readings, and the number of rows corresponds to the number times the input process is realised; characteristic irregularities caused by signals from unknown radio radiation sources are found on the obtained radar images, characteristic irregularities found on the given radar image are compared with others found on other radar images, based on coincidence of irregularity points obtained in different frequency ranges and from different reception positions, a composite radar image is created, which is a four-dimensional matrix in the "number of reading - number of realisation - frequency range - number of sector" space; coordinates of characteristic irregularities are calculated on the obtained composite radar image.

EFFECT: obtaining accurate and complete data on radio radiation sources in a complex signal-noise environment.

2 cl

FIELD: radio engineering, communication.

SUBSTANCE: method of measuring the time of arrival of an M-position quadrature amplitude modulated signal is characterised by that the signal is received, analogue-to-digital conversion of two signals is carried out using fast Fourier transform (FFT), spectrum values of one of the signals are multiplied with complex-conjugate spectrum values of the other signal, a discrete cross-correlation function (DCCF) of the signal is calculated using inverse FFT, a plurality of in-phase and quadrature readings are obtained and filtered with a cut-off frequency which corresponds to the keying speed of the modulating signal divided by n, a plurality of current signal phases are obtained, modulo 2π subtraction of the corresponding value of the delayed current signal phase from each obtained current phase is carried out, and the time of arrival of the signal is determined as an argument of the maximum of the DCCF of the signal by further correlation processing. The apparatus has units for realising operations of the method.

EFFECT: eliminating measurement errors caused by non-multiplicity of the duration of the signal symbol and sampling frequency of analogue-to-digital conversion of the received signal.

5 cl, 3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of measuring the time of arrival of a four-position quadrature phase-shift keyed signal with a π/4 shift is characterised by that the signal is received, analogue-to-digital conversion of two signals is carried out using fast Fourier transform (FFT), spectrum values of one of the signals are multiplied with complex-conjugate spectrum values of the other signal, a discrete cross-correlation function (DCCF) of the signal is calculated using inverse FFT, a plurality of in-phase and quadrature readings are obtained and filtered with a cut-off frequency which corresponds to half the rate of the initial bit message, modulo 2π subtraction of the corresponding value of the delayed current signal phase from each obtained current phase is carried out, and the time of arrival of the signal is determined as an argument of the maximum of the DCCF of the signal by further correlation processing. The apparatus has units for implementing the method.

EFFECT: eliminating measurement errors caused by non-multiplicity of the duration of the signal symbol and sampling frequency of analogue-to-digital conversion of the received signal.

5 cl, 3 dwg