RU2032918C1 - Location device - Google Patents

Abstract

FIELD: optical equipment. SUBSTANCE: location device has low- power light source 8, rotating single-line opticomechanical scanning unit 4 and test photodetector 1 mounted in series and optically interfaced. It also includes pickup 2 of elevation coordinates which input is linked to output of test photodetector 1 and which output is coupled to second input of comparison circuit 6. Rotating single-line opticomechanical unit 4 is also optically interfaced angle meter 3. Scanning zone of rotating single-line opticomechanical unit 4 is turned relative to directional pattern of rotating azimuth and elevation angle meter 3 through width of laser beam. Pickup 2 of elevation coordinates is manufactured in the form of delay line 12, flip-flop 13, coincidence circuit 14, counter 15, permanent storage 16 and clock generator 17 connected in series. Output of clock generator is linked to second input of coincidence circuit 14, second inputs of flip-flop 13 and counter 15 and input of delay line 12 are coupled to output of test photodetector 1. Output of permanent storage 16 is output of pickup 2 of elevation coordinates. EFFECT: reduced time for determination of range to objects. 2 dwg

Description

 The invention relates to optical technology and can be used in air traffic control systems and in collision avoidance systems.

 There is a known object search system in which target designations for the azimuth and elevation angle of the targets are carried out in the process of their search by another means, in particular laser optical means, the determination of the distance to the target with high accuracy, based on the direction and range data, is further processed. The disadvantage of this system is the high cost of time to determine the range to many targets.

 A known object search system in which, according to data from radar, direction finders or heat radars, elevation coordinates can be issued to direct the beam of the optical locator to the target. A radar, direction finder or heat radar can operate in a circular viewing mode, performing the functions of a rotating elevation and azimuth meter. Data on the elevation angle and azimuth of objects from a rotating elevation and azimuth meter are received respectively at the first input of the comparison circuit; the laser beam is aimed at the target, the moment of the end of pointing is fixed by the comparison circuit, which gives a signal about this to the modulator. The modulator generates a signal allowing the formation of a pulse by a laser transmitter. The light pulse reflected from the object is converted in the laser receiver into an electric signal, which enters the range converter, which determines the distance by the time mismatch between the pulse coming from the output of the modulator and the aforementioned pulse from the laser receiver. Range value is displayed on the range indicator.

 A disadvantage of the known device is the time it takes to determine the range using laser means to a variety of targets due to the need for consistent guidance and additional search for all targets.

 The invention provides a reduction in the time required to determine the range to targets. This technical result is ensured by the fact that in a location device containing a rotating azimuth and elevation meter, a laser transmitter, a modulator, a laser receiver, a comparison circuit, a range meter and a range indicator, the output of the laser receiver being connected to the first input of the range meter, the output of which is connected with a range indicator, the output of the rotating azimuth and elevation meter is connected to the first input of the comparison circuit, the output of which is connected to the input of the modulator, the output of which is connected to in accordance with the invention, sequentially mounted and optically coupled low-power light sources, a rotating single-line optical-mechanical scanning device and a control photodetector, as well as an angle sensor, the input of which is connected to the output of the control photodetector, are introduced, in accordance with the invention and the output with the second input of the comparison circuit, while a rotating single-line optical-mechanical scanning device is also optically paired o with a laser transmitter and is mechanically rigidly connected with a rotating azimuth and elevation meter, the scanning area of a rotating single-line optical-mechanical scanning device is rotated relative to the radiation pattern of a rotating azimuth and elevation angle by the laser beam width, and the elevation coordinate sensor is made in the form of series-connected lines delays, flip-flops, matching schemes, counter and read-only memory (ROM), as well as a clock generator whose output is connected nen with the second input of the matching circuit, the second inputs of the trigger and counter and the input of the delay line are connected to the output of the control photodetector, the output of the ROM is the output of the sensor of elevation coordinates.

 Figure 1 presents the structural diagram of a location device; in FIG. 2 scanning zone of the laser beam and the total radiation pattern of a rotating azimuth and elevation meter.

 The location device includes a control photodetector 1, an elevation coordinate sensor 2, a rotating azimuth and elevation angle meter 3, a rotating single-line optical-mechanical scanning device 4, a laser transmitter 5, a comparison circuit 6, a laser receiver 7, a low-power light source 8, a modulator 9, a meter range 10, range indicator 11, delay line 12, trigger 13, match circuit 14, counter 15, ROM 16, clock 17.

 The location device operates as follows.

 The rotating azimuth and elevation angle meter 3 determines the azimuth and elevation angle by a comparison method in a circular view. It may be a radar or a radar. The total radiation pattern of a rotating azimuth meter and elevation angle 3 may consist, for example, of a series of intersecting radiation patterns. Information about the elevation angle of objects from the output of the azimuth meter and elevation angle 3 is fed to the first input of the comparison circuit 6. A single-line optical-mechanical scanning device 4 rotates in synchronization with the rotating azimuth and elevation meter; . Synchronously with a laser scan, a control scan is generated from a low-power light source 8. The scan time, for example, at a rotation speed of 30 rpm with a laser beam width of 10 angular minutes can be 1 ms. This provides the necessary measurement accuracy with a maximum detection range of 30 km. As shown in figure 2, the scanning area of the laser beam 18 is offset from the total radiation pattern 19 of the rotating azimuth meter and elevation in azimuth by the width of the scanning zone 18. The direction of rotation is shown by an arrow. The field of view 20 of the control photodetector 1 is located in the working area. After the end of the beam movement upward at the time of irradiation of the control photodetector, a signal is issued to set the trigger 13 and counter 15 to the initial state. The delay in the delay line 12 is equal to the time the trigger 13 and counter 15 were set to the initial state. The vertical size of the total radiation pattern 19 should be equal to the vertical size of the scanning zone 18. The field of view 20 of the control photodetector coincides with the end of the scanning zone 18 in its upper part. The azimuthal shift of the scanning area of the laser beam is explained by the need for time to irradiate the object after receiving target designation about the direction; the value of the corresponding time interval can be, for example, 1 ms. At the same time, high measurement accuracy will be ensured, since in 1 ms an object moving at a speed of 1 km / s will shift by 1 m. The vertical size of the working area can be, for example, 30 degrees.

 When the scan from the low-power light source 3 is in its highest position, the control photodetector 1 is activated, converting the light from this low-power source into an electrical signal supplied to the elevation coordinate sensor 2, consisting of a delay line 12, trigger 13, matching circuit 14, counter 15 , ROM 1 and clock 17.

 The signal from the control photodetector 1 first sets the trigger 13 and the counter 15 to its original state, and then through the delay line 12 sets the trigger 13 again to a single state. In this case, the trigger 13 gives permission to the matching circuit 14 for the passage of clock pulses from the clock generator 17 to the input of the counter 15, which counts the number of these clock pulses and generates a binary code characterizing elevation coordinates in the ROM 16 for reading the information contained in it about elevation angles corresponding to certain values of the aforementioned binary codes. When the elevation code from the output of the rotating meter 3, arriving, for example, within 1 ms, coincides with the elevation code coming from the output of the elevation coordinate sensor 2, a comparison circuit 6 will work, the output signal of which will generate a signal modulator 9 allowing the laser pulse to emit laser light transmitter 5. The range is determined in the range meter 10 according to the time mismatch between the signal from the output of the modulator 9 and the signal from the output of the laser receiver 7.

 A location device made in accordance with the invention can be used in air traffic control systems, in particular in areas where aerodromes are located. This provides multi-purpose tracking with high accuracy in determining the range. In addition, the invention can be used to create navigation systems and collision avoidance of various vehicles.

Claims (1)

 A LOCATION DEVICE comprising a rotating azimuth and elevation meter, a laser transmitter, a modulator, a laser receiver, a comparison circuit, a range meter and a range indicator, the output of the laser receiver being connected to the first input of the range meter, the output of which is connected to the range indicator, the output of the rotating azimuth meter and elevation angle is connected to the first input of the comparison circuit, the output of which is connected to the input of the modulator, the output of which is connected to the input of the laser transmitter and the second input of the meter range, characterized in that it introduced sequentially mounted and optically conjugated low-power light source, a rotating single-line optical-mechanical scanning device and a control photodetector, an angle coordinate sensor was also introduced, the input of which is connected to the output of the control photodetector, and the output is from the second input of the comparison circuit wherein a rotating single-line optical-mechanical scanning device is also optically coupled to a laser transmitter and mechanically rigidly connected to a rotary azimuth and elevation measuring instruments, the scanning area of a rotating single-line optical-mechanical scanning device is rotated relative to the directional pattern of a rotating azimuth and elevation measuring instruments by the width of the laser beam, and the elevation coordinate sensor is made in the form of series-connected delay lines, a trigger, a matching circuit, a counter and read only memory, as well as a clock generator, the output of which is connected to the second input of the matching circuit, the second inputs of the trigger and counters Since the input and the delay line are connected to the output of the control photodetector, the output of the permanent storage device is the output of the elevation coordinate sensor.

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