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Target searching method and apparatus for pulsed laser range finder

A pulsed laser ranging and target technology, applied in the laser field, can solve the problems of inability to adapt to various situations and states, the pulse width is not processed, and the calculation speed is slow, so as to improve the data processing accuracy, improve the test distance, and improve the calculation speed. Effect

Active Publication Date: 2006-01-18
HENAN COSTAR GRP CO LTD
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Problems solved by technology

[0003] Most of the pulsed laser ranging is controlled by a single-chip computer for calculation and analysis. The shift register is used for echo storage, and then transferred to the memory unit through the single-chip computer for base processing. The number of launches is fixed, and no dedicated high-speed signal processor is used. Slow speed, no processing of pulse width, poor noise processing, low rate, long delay time, unable to adapt to various situations and states

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  • Target searching method and apparatus for pulsed laser range finder
  • Target searching method and apparatus for pulsed laser range finder
  • Target searching method and apparatus for pulsed laser range finder

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Embodiment Construction

[0028] Such as figure 1 Shown, the target finding device of pulsed laser rangefinder of the present invention, see figure 1 , consists of three parts: laser transmitting and receiving circuit, laser signal processor and microprocessor. The laser signal processor includes beat generator, PLL phase-locked loop frequency multiplier, adder, differential circuit zero elimination circuit, address generator, dual-port synchronous random access memory (RAM) and multi-way switch and other electronic circuits. The beat generator is composed of D flip-flops; the differential circuit is composed of two D flip-flops and an inverter;

[0029] The connection relationship is as follows:

[0030] The (110) emission request signal of the microprocessor part is connected to the emission request end of the zero elimination circuit (101) of the laser signal generator (100); the address line of (110) is connected to the external address end of (107); (110 ) data line is connected to q2[7..0] of ...

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Abstract

The invention relates to a goal seeking method and apparatus of pulsed laser range finder which comprises the following steps: emitting laser signal; receiving laser signal: optical receiver in turn sends the received laser signal which is reflected by objection and the echo which is formed by environment interfering material's noise into differential circuit; differential circuit operates it and cuts off the pulse which is less than one clock period and constrains the pulse which is more than one clock period into a pulse width; then it separately forms regular discontinuous integer echo; gathering the temporary sum of integer echo; goal seeking.

Description

technical field [0001] The invention belongs to the field of laser technology, in particular to a target finding method and a target finding device for a high-precision short-pulse laser rangefinder under low signal-to-noise ratio. Background technique [0002] Laser ranging is a method of light wave ranging. Existing laser rangefinders can be divided into two types: pulse type and phase type. A laser rangefinder with an application number of 011094486 published by the Chinese Patent Office is a A target finding method and device capable of working on a laser range finder with a false alarm rate, which proposes a laser range finding method that can work and has a constant false alarm rate—using digital integration technology to combine noise Filter out the signal that can find the target in the presence of noise. [0003] Most of the pulsed laser ranging is controlled by a single-chip computer for calculation and analysis. The shift register is used for echo storage, and th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/10
Inventor 赵升林杨育兴
Owner HENAN COSTAR GRP CO LTD
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