Combined optic-electronic instrument

FIELD: instrument making.

SUBSTANCE: device includes serially connected laser and optic-electronic scanning system, comprising two crossed anisotropic acoustooptic deflectors and an output optic system, and also a unit of deflector control, outputs of which are connected to inputs of deflector control, and external signals of controlled item start-up and lift-off are sent to its control inputs, a unit of mode selection, to the input of which the external signal is supplied to permit distance measurement, a generator of sync pulses, a unit of modulator control, an optical modulator of resonator good quality, the control input of which is connected with the output of the modulator control unit, an output optical system of a range channel and a polarisation prism unit installed between the first and second acoustooptic deflectors, the second output of which is connected with the input of the optical system of the range channel. The receiving range channel includes serially connected receiving optical system, a photodetecting device and a unit of accumulation of echo signals and range calculation.

EFFECT: reduction of weight and dimension characteristics of an optic electronic instrument with preservation of possibility to measure distance and to observe background and target environment.

2 cl, 2 dwg

 

The invention relates to the field of opto-electronic instrumentation, in particular optical sighting devices, and can be used to control moving objects with teleormanului in the laser beam, when running, landing and docking of aircraft, navigation through narrow or sections of bridges, remote control robotic devices are dangerous to humans zones, etc.

Currently known combined sight-guidance device containing the target channel, the laser guidance channel containing sequentially arranged and optically coupled continuous laser radiation, laser radiation modulator and forming optical system, and the transmitting channel of the laser rangefinder and the receiving channel laser rangefinder (Patent RU №2375665, priority 21.01.2008,, IPC: F41G 3/06, G02B 23/00).

In such sights devices mounted laser guidance channel, using the principle of teleobiettivi managed object (UO) in laser information field raster information with its axis passing through the center of the laser raster, combined with the line of sight of the target (U.S. Patent 4111383, NCI 244 - 3.13, 05.09.78). The main problem encountered in such systems is the problem of noise, which includes the issues of noise optical l the Institute of communication and secrecy.

The immunity of optical communication lines "target channel system hover - target" and "laser guidance channel receiver managed object" in such systems is greatly reduced due to smoke of the engine object or formation of dust cloud when you start exactly on the line of sight of the purpose that when small side winds can lead to loss of visibility of the target by the operator, and to disruption of the control object when insufficient energy potential of the used laser guidance channel (LCN).

Sneak similar systems at the modern level of development and equipping technology detectors laser radiation is practically disappears, and the imposition of the laser beam targeting during the whole time guidance gives a lot of time for addressing (smoke interference for the control channel, the laser counter for the target channel and the like).

Improving the noise immunity of LCN reach that for systems with the launcher that is controlled by the position of the laser beam is formed so that the optical axis of the beam before the start of the managed object has been displaced, for example, for ground-based launchers raised relative to the line of sight goals by a certain amount. The offset remains constant as the flight about the project, and only when approaching the target at a given range is carried out by a law reducing this offset to zero, i.e. the combination of the optical axis of the beam with the line of sight targets. In this case, the irradiation of the laser beam targets occurs within a small time interval when it is superimposed on the target (Patent RU No. 2267734, priority 17.12.2003,, IPC: F41G 7/26, G01S 1/70).

In such a laser guidance channel before starting the managed object enter the range to the target. Depending on the values of the distance and taking into account the known speed of the controlled object apparatus calculates the flight time exceeded and determines the trajectory of decline. Thus, the sight, in addition to the LCN must be a member of the rangefinder, which increases the size and weight of the gun.

The technical result of the invention is the reduction in weight and size characteristics of the opto-electronic device while maintaining the possibility of measuring the distance and surveillance Phono target environment.

To achieve the technical result in the known opto-electronic device, comprising connected in series laser and opto-electronic scanning system, comprising two crossed anisotropic acousto-optic deflector and the output optical system, and the control unit deflectors, the outputs of which is connected to the control inputs of the deflectors, and the control inputs of which receive external signals and start gathering managed products entered block mode selection, input of which receives an external signal resolution measurement range, the clock generator, the control unit modulator, the optical modulator of the resonator is installed in the laser control input which is connected to the output of the control unit modulator, the output optical system of the ranging channel and a polarizing prism unit, installed between the first and second acousto-optic deflector, the second output of which is connected to the input of the optical system of the ranging channel, and receiving the ranging channel including sequentially connected receiving optical system, photodetector, and the collection unit of the echo signals and calculating the range, the output range of which is connected to the input range of the control unit deflectors, and the synchronization input is connected to the first generator output signals, the second oscillator output signals is connected to the synchronization input of the control unit modulator, and the output resolution measurement range unit mode selector connected to the input enable control unit modulator and the control unit deflectors.

In receiving the ranging channel has been consistent is consequently United CCD sensor and block combined video processing as well as the beam-splitting prism mounted between the receiving optical system and a photodetector, the second output of which is connected to the input of the CCD array, and the second input unit of the combined video signal processing is connected to the output range of the collection unit of the echo signals and calculating the range, and the output is connected to an external video monitor.

The applicant and the authors in the patent and scientific literature is not detected opto-electronic devices (EIA), in which the goal was achieved in a similar manner.

Figure 1 presents the block diagram of the combined electro-optical device.

Figure 2 presents the timing diagram of operation of a combined optical-electronic instrument for measuring the distance and when you hover the controlled object to the target.

Combined opto-electronic device comprises connected in series laser 1 and the optical-electronic scanning system 7, the control unit deflectors 13, block mode selector 21, the clock generator 19, the control unit modulator 20, the output optical system 12 of the ranging channel and receiving the ranging channel 22. Laser 1 includes in its composition a laser emitter 2 containing the active element 3 with a dull mirror of the resonator, the optical modulator of the laser resonator 4, made the first, for example, in the form of an acousto-optic modulator, and the output mirror 5 and the collimator 6.

Opto-electronic scanning system 7 includes serially connected first anisotropic acousto-optical deflector 8, the polarization prism block 9, the second anisotropic acousto-optical deflector 10, crossed relative to the first baffle, and the output optical system 11. The second output of the polarization prism block 9 is connected to the input of the output optical system 12 of the ranging channel.

The control unit deflectors 13 includes connected in series forming unit signals and the raster parameters (Fcipr) 14, shaper codes raster (RKF) 15, an adder 16 and a two-channel frequency synthesizer (RNG) 17, the outputs of which are connected with control inputs of acoustooptic deflectors 8 and 10, and the driver code offset 18. The input shaper codes offset 18 is connected to the outputs of the synchronization processing unit signals and the raster parameters 14 and the output range of the collection unit of the echo signals and calculating the range of 25, and the output connected to the second input of the adder 16.

Receiving the ranging channel 22 connected in series includes a receiving optical system 23, photodetector 24 and block the accumulation of echo signals and calculate distance (BVAS and VD) 25, Shi is and the output of which is connected with external devices and with the input range of the control unit deflectors 13, and the synchronization input is connected to the first output of the clock generator 19.

Receiving the ranging channel may further comprise connected in series CCD 27 and the block of the combined video signal processing 28, and the beam-splitting prism 26 installed between the receiving optical system 23 and a photodetector 24. The second output of the beam-splitting prism 26 is connected to the input of the CCD 27. The second input unit of the combined video signal processing 28 is connected to the output range of the collection unit of the echo signals and calculating the range of 25, and the output is connected to an external video monitor 29.

The second output of the clock generator 19 is connected to the synchronization input of the control unit modulator 20. The output control unit modulator 20 is connected to the control input of the optical modulator of the laser resonator 4. Output resolution measurement range unit mode selector 21 is connected to the input enable control unit modulator 20 and the control unit deflectors 13.

In the hover mode of the controlled object on acousto-optical deflectors 8 and 10 receives control signals from the control unit deflectors 13. Continuous wave laser 1 passes deviation of one coordinate acousto-optical deflector 8, passes without rejecting polarizational 9 and passes deviation in the orthogonal coordinate acousto-optical deflector 10, and after passing the output of the optical system 11 forms a space laser raster information for guidance on PP. The laser beam after the anisotropic diffraction on the first deflector changes the state of polarization and therefore passes the polarization prism block 9 no deviation and is supplied to the second deflector.

Mode measurement range pulse laser beam of the laser 1 passes acousto-optical deflector 8, which does not receive a control signal from the control unit deflectors 13, without diffraction and, accordingly, no rotation of the plane of polarization, and the polarization prism block 9, via its second output is sent to the output optical system 12 of the ranging channel and then sent to the target. Reflected from the target laser echo signals received at the receiving optical system 23 and projected it on the photodetector 24. At the entrance of the reception optical system 23 also come to light waves of the visible range, bearing information about Phono target environment. The light waves of the visible range and reflected from the target laser echo signals are separated by the beam-splitting prism 26. The light waves of the visible range are projected onto the CCD 27 is constructed image Phono target environment.

The work of the combined electro-optical device of origin Taiwan is the CIO as follows.

1. Mode of measurement range.

When applying to the block mode selection 21 EIA (figure 1) external command "Measurement range" (ID) (figa)) EIA is set in the mode tracking. The output of block mode selector 21 is formed a high signal UDrilling and blasting(figb)), turns on the laser 1, and the control input of the optical modulator of the laser resonator 4, made for example in the form of an acousto-optic modulator is fed a continuous high frequency signal from the control unit modulator 20, disrupting the generation of laser radiation of the laser. The clock generator 19 generates a pair of pulses 1 and 2 UGSE(figb)), the repetition frequency of which is equal, for example, 4 kHz. A high signal UDrilling and blastingpermit the passage of pulses synchronization 2 (pigv)) from the clock generator 19 to the control unit modulator 20, the high-frequency signal UBOOMformed pause (high)), during which the laser emits short light pulses with a duration of about 10 NS, the time of occurrence of which relative to the front synchronizing pulse 2 arrested approximately 100 NS, and coincides with the emergence of synchronization signals 1 (pigv)) of the clock generator 19.

The laser pulses have a polarization that is oriented perpendicular to the plane of the drawing and figure 1 show is on point. The laser pulses pass through the collimator 6, pass the deflector 8 without diffraction and without changing the polarization state, and prismatic block 9, via its second output, sent to the input of the output optical system 12 of the ranging channel. The laser beam output optical system 12 of the ranging channel is directed at the target.

A high signal UDrilling and blastinghas duration, providing, for example, the passage of 256 pulses synchronization 2 (pigv)) from the clock generator 19 to the control unit modulator 20. When this target will be irradiated 256 times short laser pulses.

Reflected from the target laser echo signals received at the receiving optical system 23 and projected it on the photodiode photodetector device (PSD) 24. Photodiode FPU 24 converts the light signals into electrical impulses which are amplified in the amplifier FPU 24. Electrical output pulses FPU 24 (figd)), mixed with noise, UFPUfed to the input of block accumulation echo signals and calculating the range of 25. In block accumulation echo signals and calculating the range of 25 is "digitization" of the amplitude of the received mixture signal to noise, for example, desethylatrazine analog-to-digital Converter (ADC) with frequency clocking FTequal to, for example, FT=200 MHz, for a time ΔT=DMAX/c, where DMAX- maximum the Naya measured range to the target, C is the speed of light. The time ΔT is calculated from each synchronizing pulse 1 input to the block accumulation echo signals and calculating the range of 25 from the clock generator 19 (pigv)).

Desethylatrazine code amplitude mixture of signal and noise after the first synchronizing pulse 1 is written in the buffer memory, and further, upon receipt of the following synchronization signals 1, the new data codes amplitude of a mixture of signal and noise are summed with the previous data. The resulting sum in the buffer memory BWES and VD 25 is the total digital sample of the mixture signal/noise UΣ(fige), in which the signal-to-noise ratio increasedtime, where N is the number of emitted light pulses. The range of DCto the target is determined by the expression DC=MM×/FTwhere MM- serial number of the digital sample with the highest amplitude, measured from the latter, for example, 256-th synchronizing pulse 1 (pigv) this is the third pulse) clock generator 19. The received digital data on the distance to a target is fed to the input range of the control unit deflectors 13, where it is recorded in the memory of the former codes offset 18, and act on the data bus to write to the external device. The accuracy of the measurement range is determined by the frequency of the clocking of the FTand, when FT/sub> =200 MHz, equal to 0.75 m

The light waves of the visible range, bearing information about Phono target setting, separated beam-splitting prism 26 and are projected onto the CCD 27 is constructed image Phono target environment. The video signals output from the CCD 27 is fed to the input block of the combined video signal processing 28, producing a combined video signal. In the video image Phono target environment are kneaded video sighting marks and the digital video signals of the image range, the data which are received from the collection unit of the echo signals and calculating the range of 25. The combined video signal from the unit 28 is supplied to an external video monitor 29 forming the image Phono target environment, aiming mark, the digital image of the target range and other symbols that facilitate monitoring and tracking operator.

After installation of the signal UDrilling and blasting(figb)) in the low level, the EIA goes into standby mode the following external control commands.

2. Hover mode a PP goal.

Hover mode a PP goal is not different from the algorithm in the EIA described for the prototype.

When applying to the control unit deflectors 13 (1) external command "start" (Figg)) set initial parameters of all blocks included in the block of management the Oia deflectors 13, and turns on the laser 1, which emits a continuous laser beam. After a time δ tPapproximately 1C, is formed external command "Gathering"(figs)).

When applying to the control unit deflectors 13 (1) external command "Retired" after time TCduring which the managed object reaches the initial range management L0Fcipr 14 starts to operate in the mode of changing the parameters of the laser raster. It produces during the time interval Δti codes angular size of the raster MKcodes signs raster type PKthe number of rows NSand other service commands. Connected in series with Fcipr 14 RKF 15 generates binary codes ZTand YTdetermining the trajectory of the scanning laser beam in a raster. In the FCC 18 are formed codes are offset vertically (excess) Kφ. Conventionally, the character code changes Kφ presented on Figi). Thus the inputs of the adder 16 is served binary codes ZTand YTfrom the outputs of the shaper codes raster 15 and codes are offset vertically (excess) Kφ output FCC 18, time-varying, depending on the distance to a target. The adder 16 is designed in such a way that its outputs connected to the inputs of RNG 17 are formed codes ZC=ZT, YC=YT+Kφ determining the vertical offset (excess) of the center of laser races the RA over the line of sight targets. Codes ZCand YCfiled in RNG 17 is converted into a tunable time-frequency control signals fzcand fyc. These signals are fed into the deflectors 8 and 10 of OET 7. They determine the size of the laser raster control and the displacement of its center relative to the line of sight targets on the value of h(t).

In the FCC 18 are formed codes are offset vertically (excess) Kφ=F(L) so that the linear excess amount of h0was a constant in the time interval TC...TPand further decreased, for example, by the reduction curve, is represented as: h(t)=h0(1-e-t/τ), where: τ is a constant that determines the rate of descent, and t the current time from the beginning of the decline. Conventionally, the nature of changes in linear excess of h(t) of the laser raster above the line of sight targets presented on Figi).

After time TK(Figi)) after the filing of the external command "Assembly line of sight targets coincides with the center of the laser raster, and UO is flying to meetings with the purpose of the current time TC(Figi)). Fcipr 14 generates control commands up to time TG>TCto account for the instability of velocity UO, for example, on weather conditions. Next, the control unit deflectors 13 stops the formation of control signals and lsls goes into standby mode external commands control the.

Laser 1 operating in continuous and pulsed modes, can be implemented on the active element of the pomegranate with neodymium and pumped semiconductor laser diodes. Inside the resonator can be installed acousto-optical modulator, for example, commercially available M3-M having a frequency control signal of 80 MHz. An embodiment of such a laser is described in (VV Keeper and other compact high-performance Nd3+:YAG laser at a wavelength of 1,064 μm, working in continuous and pulsed modes, diode pumped and q-switching acousto-optical shutter. Quantum electronics, t.35, No. 6 (2005), s-510). Such a laser provides output power in continuous mode 1.8w, and in the pulse mode, the pulse repetition frequency 5 kHz pulse power exceeds 120 µj when the diffraction divergence and pulse duration of about 7 NS. The accumulation of echoes from pulses equivalent laser power compared to the monopulse rangefinder equalMJ, that will ensure, taking into account the diffraction divergence of a laser beam, measuring the range of about 10 km With increasing laser power, this value range can be increased.

Fcipr 14, RKF 15, an adder 16, and the clock generator 19 can be implemented as specified in the prototype, on the basis of the e series microcontrollers for example, TAS ATMEL containing non-volatile memory, control ports and temporary timers.

The collection unit of the echo signals and calculating the range of 25 involved in the digitization of the amplitude of the received mixture signal/noise, simultaneous addition of digital codes amplitudes and measuring the time interval counted from the last synchronizing pulse to the maximum digital signal, determines the range to the target can also be implemented on the basis of a number of microcontrollers, for example, TAS ATMEL, containing in addition to the non-volatile memory, ports management and temporary timers, desethylatrazine analog-to-digital Converter is required to convert the analog output signal FPU 24 into a digital code.

It should be noted and the additional opportunities offered by the EIA. Classical pulse finders typically contain solid-state laser based on the crystal Nd:YAG pumped solid-state active element radiation pulsed lamps. Typically, these rangefinders are the divergence of the laser radiation at the output of the rangefinder approximately 6×10-4happy. The diameter of the laser spot from the rangefinder to the target plane located at a distance of 5 km, equal to 3 m, which imposes a limit on the spatial resolution dlname the and. The angular divergence of the laser in the proposed lsls almost equal diffraction and light aperture 18 mm is equal to 10-4happy. At a distance of 5 km diameter laser spot equal to 0.5 M. This significantly increases the spatial resolution of the rangefinder.

Thus, the introduction of EIA block mode selection, clock generator, a control unit modulator, the optical modulator of the resonator, the output of the optical system of the ranging channel and the polarization prism block and the reception of the ranging channel, comprising connected in series receiving optical system, photodetector and block the accumulation of echo signals and calculate distance with the above relationship allows, through the laser work in two modes - continuous and pulse, to reduce weight and size characteristics of the opto-electronic device while maintaining the possibility of measuring the distance and surveillance Phono target environment.

1. Combined opto-electronic device, comprising connected in series laser and opto-electronic scanning system, comprising two crossed anisotropic acousto-optic deflector and the output optical system, and the control unit deflectors whose outputs are connected to the control inputs of the deflectors, and the UE is awsomee the inputs of which receive external signals and start gathering managed products characterized in that it introduced the block select mode, the input of which receives an external signal resolution measurement range, the clock generator, the control unit modulator, the optical modulator of the resonator is installed in the laser control input which is connected to the output of the control unit modulator, the output optical system of the ranging channel and a polarizing prism unit, installed between the first and second acousto-optic deflector, the second output of which is connected to the input of the optical system of the ranging channel, and receiving the ranging channel including sequentially connected receiving optical system, photodetector and block the accumulation of echo signals and calculate distance the output range of which is connected to the input range of the control unit deflectors, and the synchronization input is connected to the first generator output signals, the second oscillator output signals is connected to the synchronization input of the control unit modulator, and the output resolution measurement range unit mode selector connected to the input enable control unit modulator and the control unit deflectors.

2. Combined opto-electronic device according to claim 1, characterized in that the reception of the ranging channel has been p is therefore United CCD sensor and block combined video processing as well as the beam-splitting prism mounted between the receiving optical system and a photodetector, the second output of which is connected to the input of the CCD array, and the second input unit of the combined video signal processing is connected to the output range of the collection unit of the echo signals and calculating the range, and the output is connected to an external video monitor.



 

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4 cl, 4 dwg

FIELD: physics.

SUBSTANCE: system has a laser rangefinder, two detection channels, one of which is television and the other is infrared, which has a second objective lens and an N-element photodetector, a scanning mirror position sensor, a switch, an analogue-to-digital converter, a unit for determining matrix elements of the resultant image, a unit for evaluating linear transformation coefficients, a criterion function calculation unit, a unit for selecting the minimum value of the criterion function and a unit for forming the matrix of the initial image.

EFFECT: more reliable identification of a the image of a target due to independence of the reference from scanning conditions.

1 dwg

FIELD: weapons.

SUBSTANCE: invention relates to guidance systems and can be incorporated with tank and antitank complexes as well as in small-size antiaircraft complexes. Control station additionally incorporates unit to generate two flat orthogonal beams, course- and pitch-scanned perpendicular to their planes, which adds to security of control process due to small instantaneous area and short duration of terrain illumination in target area. Control station also incorporates synchroniser and unit to generate codes and pulse codes transmitting, on scanned beams, the data on spatial position in the form of time-pulse modulation in preset, for given complex, level of security to increase efficiency in simultaneous fire from several complexes and provide security of control thanks to pulsed radiation mode (minor radiation power). Missile incorporates unit to gate received signal, gate pulse unit, onboard pulse code synchroniser and analyser to extract missile coordinates transmitted on their pulse code level.

EFFECT: higher noise immunity and accuracy thanks to generation and transmission of commands of dynamic error compensation.

3 dwg

FIELD: weapons.

SUBSTANCE: invention relates to trainers. Proposed system comprises gunner-operator and commander trainers connected in common circuit. Note here that gunner-operator trainer comprises acoustic communication unit, visual conditions simulator control unit, unit to generate and receive target-hitting indicator and control unit. Commander trainer comprises acoustic communication unit, control unit to cut in visual conditions simulator control unit for gunner-operator, unit to generate and receive target-hitting indicator and unit to control gunner-operator actions. Note here that all outputs of the units to generate and receive target-hitting indicator of all trainers are interconnected to transmit target-hitting indicator into gunner-operator and commander units designed to generate and receive target-hitting indicators for the latter to be displayed ion appropriate visual conditions simulators of trainer. Commander acoustic communication unit has two-way communication with acoustic communication unit of every gunner-operator trainer. Output of the unit that controls visual conditions simulators of commander trainer is connected with inputs of the units that control visual conditions simulators of gunner-operator trainers.

EFFECT: possibility to train groups of gunners-operators.

3 cl, 1 dwg

FIELD: physics.

SUBSTANCE: system can be used in mechanisms for guiding guided missiles to a target using a laser beam. The system includes an input window of the laser modulation device, first pancratic system and first objective lens placed lying on the first axis, second pancratic system, second objective lens and optical compensator lying on the second axis, parallel the first axis. The first reflector is placed at an angle to the first axis in front of the first pancratic system with possibility of coming out of the beam path. The second reflector is placed in front of the second pancratic system parallel the first reflector. In the initial position of the first reflector on the axis of the first pancratic system, mobile components of the second pancratic system move, thereby reducing angle of divergence α of the laser radiation in the near control area to a value αd. When the first reflector moves out of the beam path, mobile components of the first pancratic system move, thereby reducing angle of divergence of laser radiation in the far control area from value αd to a minimal value. Each pancratic system includes at least two mobile components.

EFFECT: reduced length of the pancratic system, prevention of defocusing of the system in the entire movement range of lenses of the pancratic system.

4 cl, 1 dwg

FIELD: development of missile guidance systems, applicable in anti-tank and aircraft missile complexes.

SUBSTANCE: the known method for guidance consists in formation of modulated laser radiation with variation of the beam angular dimension according to a program, shooting of the missile in the beam, reception by the missile control equipment of radiation and transformation of it to an electric signal of control of the control surfaces, additional operations are introduced: after a definite time interval the second missile is shot in the beam, and the program of variation of the beam angular dimension is started at the instant of launch of the second missile, the time interval between the launches of missiles is determined from the condition determined by the preset mathematical expression. The guidance system realizing this method differs from the known one, which has a sight consisting of series-connected source of modulated laser radiation and optical system with a variable focal distance, missile launching system, the sight is made for connection by optical communication to the first input of the control equipment of the first missile, the output of the missile launching system is connected to the second input of the control equipment of the first missile by the fact that it is provided with a delay unit, whose input is connected to the output of the missile launching system, and the output is connected to the second input of the control system of the second guided missile and to the second input of the optical system with a variable focal distance. The sight is made for connection by optical communication to the first input of the control equipment of the second missile.

EFFECT: provided simultaneous guidance of two missiles in one beam, which enhancer the efficiency of the complexes at destruction of an extra-important target.

3 cl, 1 dwg

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