Using angle measurements (G01S11/04)

ethod for determining location of a quasi-continuous broadband source of radio-emission by mobile complex of radio-technical supervision // 2645297
FIELD: radio engineering and communication.SUBSTANCE: invention relates to radio engineering and can be used in the development of multi-position complexes of radio technical supervision. Method consists in: receiving a quasi-continuous broadband signal by antenna array at each receiving position of the radio technical supervision complex, forming intervals of observation with duration tsup., on which the correlation matrix of signals Rxx(m) of the input realization of a quasi-continuous wideband signal is calculated according to a certain formula, calculating a difference correlation matrix of signals ΔRxx(m) = Rxx(m)-Rxx(m+l), calculating the determinant of the difference correlation matrix with the subsequent formation and normalization of dependence for constructing position lines; calculating the correlation function of dependence by the corresponding formula, determining the path difference for each position with respect to the maximum of the enveloping mutual correlation function by the system of mutual correlation processing, estimating the coordinates of the source of quasi-continuous broadband signal by the time difference method on the basis of analysis of the time dependence of the determinant of the difference-correlation matrixes of the signals generated in the elements of the antenna arrays at receiving points of the radio technical supervision complex.EFFECT: achieved technical result of the invention consists in improved accuracy of positioning the sources of a quasi-continuous wideband signal by a complex of radio-technical supervision and reduced time required to locate sources of radio emission.1 cl, 5 dwg

Single-position multiplicative differential-relative method to determine location coordinates of radio radiation sources // 2643780
FIELD: radio engineering, communication.SUBSTANCE: method is based on the energy principle, which consists in measuring (or calculating) the RFS intensity field and at several space points with the known coordinates of its location. The RFS field intensity is measured on the RCP, and at the additional point (points) it is calculated. The virtual post (VP) is proposed as the additional point, the coordinates and parameters of its virtual antenna (directional diagram and suspension height) are specified. When using of n VP it is placed not in line with the RCP and is "spaced" from it by latitude and (or) by longitude at several arc minutes. The intensity calculation at the VP is based on the principle of the correlation dependence (CD) of the field intensities, created by the multiple radio-frequency sources within the given frequency range, located according to the data base in the RCP electromagnetic accessibility area and calculated by the certain program both for the RCP and for all given VP.EFFECT: determination of coordinates without using the location finders and radio receivers with autocorrelators.2 cl, 8 dwg

Single-position method for determining coordinates of radio-frequency source location // 2643513
FIELD: radio engineering, communication.SUBSTANCE: method is based on the energy principle, which consists in measuring (or calculating) the strength of the RFS field and at several space points with known coordinates of their location. The strength of the RFS field is measured on the RCP, and is calculated at the additional point (points). A virtual post (VP), whose coordinates and parameters of its virtual antenna (directional pattern and suspension height) are specified, is proposed as an additional point in the method. When using n VP, they are "placed" not in line with the RCP and are "spaced" from it by latitude and (or) by longitude by several arc minutes. The calculation of the strength on the VP is based on the principle of the correlation dependence (CD) of the field strengths created in a given frequency range by a pularity of radio-frequency sources located in the electromagnetic accessibility zone of the RSC according t the data base and calculated by a certain program both for the RCP and for all given VP.EFFECT: determination of source location without the use of direction finders and radio receivers with autocorrelators.5 dwg, 1 tbl

ultiposition passive radar complex implementing combined one-step method of determining aircraft location at stage of landing // 2632922
FIELD: radio engineering, communication.SUBSTANCE: narrow-base subsystem is equipped with an active phased multi-ring antenna array and receives radio signals, synchronously demodulates them with a multi-channel quadrature receiver, and digitizes it via a multi-channel analog-to-digital converter. The central processing station estimates the position of the radiation source based on the joint processing of all received signals using a combined one-stage algorithm consisting in the formation of a decision function based on the maximum likelihood method and its subsequent optimisation and excluding the execution of intermediate calculations of time and phase delays and bearing angles.EFFECT: increasing the accuracy of the coordinate vector estimate describing the location of the radio emission source.3 cl, 8 dwg

ethod of determining height of two-dimensional radar station target // 2624467
FIELD: radio engineering, communication.SUBSTANCE: in two-dimensional radar station (RL) between the secondary processing unit and the information display unit, a post-processing unit of the target path data is introduced, consisting of a calculator, a subtractor and a comparator, filtered target position data from the secondary processing unit arrives at the input of the post-processing unit, from which three consecutive measurements are chosen, processed in a calculator, one reliable value of the assumed height is taken and stored in subtractor, then, in case of a rectilinear trajectory, then, in case of the first iteration it is followed by processing the following measurements of target position in computer, and in case of the second and subsequent iterations, the deviation of newly received proposed height from the previously calculated is determinde in subtractor, the deviation is recorded in comparator, the correctness of hypothesis of the straightness and uniformity is evaluated, the computed value of height is adopted which is passed to information indication unit, and then the processing the next measurement is carried out, that were received by unit of trajectory of target post-processing.EFFECT: expansion of existing two-dimension radar stations functionality.4 dwg

ethod for controlling inertial antenna drive ensuring stable tracking intensely manoeuvering and high-speed aircrafts with increased adaptation to maneuver of carrier and system for its implementation // 2598001
FIELD: radio electronics.SUBSTANCE: invention relates to radio-electronic tracking systems, particularly, to direction-specific tracking systems (angle finders and finders of angular velocity of pointing direction), which employ inertial antenna drive, and can be used for efficient direction control of inertial servo systems in the mode of tracking various aerial objects, including those intensively maneuvering. Proposed method allows to consider in the control action the angular speed of observing line, course of carrier and derivatives thereof, wherein the inertial antenna drive properties make it possible to ensure stable and accurate tracking of an intensively maneuvering object (IMO). Control signal is generated in the control system in a certain manner.EFFECT: technical result is high-precision stable direction tracking of supermanoeuverable targets when using conventional inertial antenna drive, without the need to change the design of antenna drive.1 cl, 5 dwg

ethod of measuring spatial coordinates of target in multi-position system from two-dimensional radar station // 2581706
FIELD: radar and navigation.SUBSTANCE: invention relates to radar and can be used for measurement of spatial coordinates of targets, including target height using two-dimensional radar stations, determining the bearing and distance to target and combined into a multi-position radar system. Method consists in determination of mismatch between target coordinates projected onto plane, caused by non-zero height of its location and calculated by each two-dimensional radar station, and determining the height of target location, best corresponding to all available mismatches between coordinates on the plane.EFFECT: higher accuracy of measuring spatial coordinates of a target using two-dimensional radars integrated into single system.1 cl, 2 dwg

Direction determination device // 2560524
FIELD: measurement equipment.SUBSTANCE: device includes a direction-finding device, an indicator, two units of coincidence elements, an amplitude selector, a sensor of ionosphere height and a constant memory unit. The above said elements are connected to each other in a certain manner.EFFECT: simpler device.2 dwg

ethod of combat machine fire on target and system to this end, method of definition of experimental dependence of pointing direction angular velocity // 2529241
FIELD: weapons and ammunition.SUBSTANCE: set of inventions relates to weaponry, particularly, to combat machine fire complex. Proposed method comprises target capture and identification, tracking with simultaneous range finding and determination of fire angle correction proceeding from mathematical expressions. Here, used input parameters include, in particular, magnitudes of angular velocities fed from controls of operator or commander. Besides, this method comprises continuous displacement of gun or machine gun relative to pointing direction with allowance for their barrel angle corrections and fire on target. In determination of fire angle corrections, magnitudes of angular velocities corrected with allowance for experimental dependence of pointing direction angle velocities predefined before fire. In compliance with this invention, this incorporates control unit and device for correction of pointing direction angle velocity in horizontal and vertical channels. To determine experimental pointing direction angle velocity, turret or weapon unit is displaced in horizontal or vertical channel, respectively. At every displacement and elapse of preset time turn angles are measured to define target angle velocity of pointing direction. Obtained magnitudes are used to reproduce the dependence of pointing direction angle velocity on angle velocity fed from controls of operator or commander or autotracker.EFFECT: higher accuracy and efficiency of fire.6 cl, 5 dwg

ethod for detection of radiation source motion parameters // 2380723
FIELD: radio engineering.SUBSTANCE: in triangulation method for detection of radiation source (RS) location by measurement of angular directions (bearings) at RS - α1, α2, α3, out of three receiving-location finding points distanced from each other by distance that is called base, additionally frequencies of received signal of RS - f1, f2, f3, are measured simultaneously in according receiving-location finding points, values of RS motion direction - α - are calculated, as well as module of speed - |V|, using according formulas. Method may be realised on existing location finding system, which consists of three receiving-location finding points, for instance in aviation range of frequencies of 100…400 MHz, in prospect - up to 1225 MHz, where speed of aircrafts - RS carriers - makes 300…3000 km/hour.EFFECT: increased number of identified parametres of radiation source motion.4 dwg

Signal processing device // 2313106
FIELD: passive detection and ranging, applicable in angle-finding systems.SUBSTANCE: the device has a synchronizer, single transmitter, coordinator, secondary processing unit, azimuth sensor, permanent storage, indicator, subtracter and an angular value difference correction unit connected in a definite way.EFFECT: provided determination of the range to movable objects.2 dwg

Angular is a basic way of measuring range // 2184981
The invention relates to radio engineering, in particular to systems for determining the distance without using reflection or secondary radiation, and can be used to determine the distance to a spatially distributed radiation sources