SU1376051A1 - Laser range finder - Google Patents

Abstract

The invention relates to estronic instrumentation, in particular, to laser pulse range finders for observing distant space objects. The aim of the invention is to increase the speed of distance measurement. The device contains a laser 4 with a control unit 5, the radiation of which through the switch 13 and the telescopic system 1 with VRM 2 and the guidance system 3

Description

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equals the object to which the distance is measured. The radiation reflected from the object through the telescopic system 1 and the switches 13 and 12, each of which includes mirrors 17 and 16, mounted on the levers 15 and 14, driven by electric motors 19 and 18, the speed of which is regulated by a signal from the sensors 21 and 20 angular polo76U5I

through the controllers 23 and 22, the rta radiation reception device 6 and the photoelectric reception device 7 enters, the signal from which is sent to the time interval measurement device 8, triggered by the signal from the laser 4, and according to its indications distance. 1 il.

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The acquisition relates to astronomical instrumentation, in particular, to laser pulse rangefinders for observing distant space objects.

The purpose of the invention is to increase the rapidity of distance measurement.

The drawing shows a block diagram of a laser range finder.

The diagram shows the telescopic system I, the drives 2, the guidance system 3, the laser emitter 4, the control unit 5, the visual radiation reception system 6, the photoelectric radiation reception system 7, the time interval measurement device 8, the U block. forming clock pulses, block 1 and shaping time intervals, block II of entering information, first 12 and second 13 switches of optical channels, levers 14 and 15, reflecting elements 16 and 17, electric motors 18 and 19,. sensors 20 and 21 of the angular position of the reflecting element, first 22 and second 23 control units, the speed of the electric motor; The logical element And 24, the absorber 25 la-. the correct radiation, the optical axis 26 of the system for visual reception of radiation, the axis 27 of radiation of the laser emitter, the optical axis 28 of the systems 1 of photoelectric reception of radiation.

Laser rangefinder works as follows.

The optical axis of the telescopic system 1 by means of the actuators 2 1 is directed towards the object to which the distance is to be measured. Pulse laser emitter 4 through ore 10

15

20

25

thirty

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The sealing element 17 and the telescopic system 1 are sent to the object, the pulse reflected from the object is directed by the telescopic system 1 and the reflecting element 16 to the receiver of the system 7 of photoelectric radiation reception. The device 8 for measuring time intervals measures the transit time of the radiation pulse to the object and back and, using measurement results taking into account calibration and climatic data, calculates the distance to the object. Guidance and tracking of the object in the rangefinder are controlled by the system 6 of visual radiation reception.

The measurement of the time interval and the time selection of the information reflected signal are made in the following way.

From block 9 of the formation of clock pulses clock pulses frequency. 10 Hz is fed to the second motor speed control unit 23, which controls the rotational speed by phase shift of the rotor position of the electric motor 19. The decoupling element 17 of the second switch 13 is fixed on the lever 15, which is mounted on the rotor of the electric motor 19. Block 23 is received It is about the angular position of the reflecting element 17 from sensor 21 and changes the rotor speed until the pulse from sensor 21 coincides in time with the clock pulse. The mirror 17 is installed under the angle of 45 ° to the optical axis 26 of the visual radiation reception system and turns off the visual 6 reception system and the phatoelectric 7 radiation reception from the telescopic system 1 at the time of arrival of the clock pulse. The laser emitter 4 is set in such a way that its radiation axis 27 intersects the surface of the reflecting element 17 at the intersection of this element with the optical axis 26 of the visual radiation reception system, and the radiation axis 27 forms an angle (3 45 ° with the plane of the reflecting element 17, Sensor 21 is fixed on the switch 13 in such a way that the axis 27 of the radiation of the laser emitter 4 intersects the surface of the reflecting element 17 at the point of intersection of this element with the optical axis 26 at the time of arrival of the clock pulse.

The clock pulses from the clock-shaping block 9 are fed to the first input of an AND 2.4 gate and when the enable signal is sent to the second (he input of the AND 24 gate, is passed to the control block 5 of the 2n laser emitter. Block 5 controls the radiation laser pulse, emitter

4 at the moments of arrival of the clock pulses 45 with a plane of reflections with a frequency f 10 Hz. Radiating element 16. Sensor 20 fixing,

: reflected by the reflective element 17, passes through the telescopic system 1 to the object.

With punched tape information about double

flax on the switch 12 in such a way that the optical axis 28 of the photoelectric radiation receiving system intersects the surface of the reflecting distance to the object at the time of the imaging element 16 at the intersection point of

in the unit 11 for inputting the information element by the optical axis 26 of the system, which feeds the code of the visual reception of radiation into

on the unit 10 of the formation of the time components of the time of arrival of the delayed intervals, where the code is set to the .Q th pulse. from block 10 to block reversing counter (not shown). -22. Impulse reflected from object

Clock pulses. 1 f -, - from block 9, a telescopic world passes at this moment (the same clock pulses of the input system 1, also reflects the reflecting nl block 10, where each element 16 and enters the system

, d5 7 photoelectric reception of radiation.

pulse forms a counting command.

With a zero count on a reversible counter, the pulse pulse fynn is exported. i is similar; rio parameters are clocked, but delayed relative to the last

Claims (1)

Invention Formula The laser rangefinder containing it for the duration of the radiation — optically conjugated laser radiation of the double radiation: neither to the object, the detector with the control unit, and the telescope production :; t a new entry of the code p auxiliary system, by entering into the reversible counter of the block 10. Impulses; control ..fjein. (detained relative to f-) are sent to the first speed control unit 22 water coupled with the guidance system, visual and photoelectric systems. This device is used to receive the radiation, the time interval measurement device, the first input of which is connected to the second output of the laser emitter, and the second input - c. the output of the system is the rotational speed of the electric motor 18 of the first optical switch 12. J5noK 22 controls the rotational speed by phase shifting the rotor position of the electric motor 18. The reflective element 16 of the first switch 1 is mounted on the lever 14, which is mounted on the rotor of the electric motor 18. Control unit 22 -, the signal about the angular position of the reflecting element .16 from the sensor 20 and changes the rotor speed until the impulse from sensor 20 coincides with the delayed impulse from block 10. Reflecting element 16 is set at an angle of 45 ° to the optical axis 26 of the system for the visual reception of radiation and turns off during arrival delayed pulse system 6 visual reception of radiation from a telescopic systems I. The system 7 of photoelectric reception of radiation is installed in such a way that the optical axis 28 of the system of photoelectric reception of radiation intersects the surface of the reflecting element 16 at the point of intersection of this element with the optical axis 26 of the visual information reception system, with the optical axis 28 forming an  pica system, by means of 55 water coupled with the guidance system, visual and photoelectric systems. This device is used to receive the radiation, the time interval measurement device, the first input of which is connected to the second output of the laser emitter, and the second input - c. the output of the photoelectric reception system, the first switch of the optical channels, a lever coupled to the axis of an electric motor with a reflecting element attached to it, the first switch of the angular position of the reflecting element connected through the first motor speed control unit with the electric motor of the first switch, block forming time intervals, the first input of which is connected to the output of the information input unit, the second input to the output of the form unit and clock pulses, and the output to the second input of the first control unit motor speeds, characterized in that, in order to increase the speed of distance measurement, a second switch of optical channels is inserted in it, again the angular position sensor of the reflecting element entered second control unit Neither the speed of the motor is connected to the motor of the second switch, the logical element I, the first input of which is connected to the output of the clock generation unit, the second input to the output of the time interval measuring device, and the output to the input of the laser emitter control unit, and the laser absorber, the reflecting elements of the second and first switches of the optical channels are mounted next to each other on the optical axis of the visual radiation reception system between the telescopic A system and a system for visual reception of radiation, and optically coupled, respectively, with a laser emitter and a system of photoelectric reception of radiation, and an absorber of laser radiation is installed on the radiation axis of the laser emitter behind the reflecting element of the second switch of optical channels.