Laser distance measurement target indicator and distance measurement method thereof and working state switching method

Abstract

The invention discloses a remote laser distance measurement target indicator in the field of laser distance measurement. The remote laser distance measurement target indicator comprises a laser transmitter, a laser receiver, an avalanche transistor grid bias power supply, a semiconductor pumping source power supply, a laser Q-switching power supply, a laser energy meter, a communication interface and a signal processor. Based on the time uncorrelated principle of signals and noise, weak target signals in the noise can be distinguished, and the distance measurement capacity for remote distance measurement is achieved; by the adoption of a semiconductor pumping source laser, high-frequency and multiple-pulse laser transmitting is achieved under the condition of not increasing hardware spending; switching of the two functions of laser distance measurement and target indication is achieved through software control; due to improvements on a distance measurement method and a control method, the weight of equipment is reduced directly and indirectly, the size of the equipment is reduced, the predicated weight and size are only one quarter that of a traditional xenon lamp pumping source laser distance measurement machine, and the remote laser distance measurement target indicator can be used for remote distance measurement.

Description

technical field [0001] The invention relates to a laser ranging device, in particular to a laser ranging target indicator with target indicating function. Background technique [0002] Most of the traditional solid-state pulse laser rangefinders use single-pulse laser rangefinder, which has limited rangefinder capability and needs to improve the rangefinder capability, which can only increase the output laser energy, resulting in a series of problems such as bulky size, increased power consumption, and increased weight. The problem has increased the difficulty of optoelectronic system airborne. [0003] The laser rangefinder in the American airborne "door police" photoelectric warning system, and a domestic vehicle-mounted air-to-air laser rangefinder all use the three-pulse laser rangefinder method, although the range is greatly improved compared with the single-pulse laser rangefinder , but these laser rangefinders still have the following deficiencies: (1) The hardware u...

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Problems solved by technology

[0003] The laser rangefinder in the American airborne "door police" photoelectric warning system, and a domestic vehicle-mounted air-to-air laser rangefinder all use the three-pulse laser rangefinder method, although the range is greatly improved compared with the single-pulse laser rangefinder , but these laser rangefinders still have the following deficiencies: (1) The hardware uses a xenon lamp-pumped solid-state laser, which consumes more power and volume than a single-pulse laser rangefinder; (2) only has a single laser rangefinder function, not It has the function of laser target indication; (3) Since the discharge characteristics of the xenon lamp will be affected by the ambient temperature and long-term use, the three pulse laser energies output by the laser cannot always be consistent, which will affect the distance measurement and the effective judgment of the target signal; (4) The paper "Research on Pulse Train Laser Ranging Technology" discusses the principle of the three-pulse ranging of the above-mentioned laser rangefinder, that is, to improve the signal-to-noise ratio through signal superposition, but does not mention the comprehensive application of signal video accumulation and binary accumulation Methods

The technology of combining the functions of multi-pulse laser ranging and laser target indication is one of the effective ways to reduce the volume and weight of the laser subsystem. However, due to the heat dissipation of the xenon lamp pumped solid-state laser, it is difficult to achieve multi-pulse Switching of laser energy and laser frequency in two working states of laser ranging and laser target indication

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