Pulse parameter encrypted laser ranging system and method

Abstract

The invention relates to a pulse parameter encrypted laser ranging system and method. The pulse parameter encrypted laser ranging system includes a laser detector, a pulse transmitting system, a laserpulse receiving system, a micro controller, a time interval measurement unit and a pulse demodulation encoding device, wherein the laser pulse receiving system is used for performing reception and processing before the pulse echo reflected from a detection target enters the laser detector; the micro controller controls the laser detector, the pulse transmitting system and the laser pulse receiving system to perform calculation and processing; the pulse demodulation encoding device performs random demodulation and encoding on the laser transmitting pulse frequency, width or peak power under control of the micro controller, and sends and receives demodulation; the time interval measurement unit is used for timing; and the micro controller demodulates the corresponding reception laser according to the time and laser transmitting pulse frequency, width or peak recorded by the time interval measurement unit during the demodulation process, so as to measure and obtain the demanded data. Thepulse parameter encrypted laser ranging system can effectively eliminate interference, can prevent blinding, and is high in decoying capability.

Description

technical field [0001] The invention relates to the technical field of laser scanning, in particular to a laser ranging system and method with pulse parameter encryption. Background technique [0002] With the development of laser technology, laser scanning technology is more and more widely used in surveying, transportation, driver assistance and drones, mobile robots and military fields. Existing laser radars generally have high manufacturing costs and complex structures, and some have large volume and mass, which is not conducive to the application of laser radar in driving assistance systems, unmanned driving systems, mobile robots, and unmanned aircraft obstacle avoidance and navigation. field applications. [0003] Laser ranging uses lasers as light sources for ranging. At present, according to the different working methods of lasers, they can be divided into continuous lasers and pulsed lasers. Gas lasers such as helium-neon, argon ions, and krypton-cadmium work in ...

AI Technical Summary

Problems solved by technology

For example, pulsed laser ranging is the main method for missile-borne near-field ranging. Due to internal and external interference, false alarms are caused, especially in harsh environments such as sunlight, snow, rain, smoke and other atmospheric particles. In such environments, the impact of interference is relatively large, which seriously reduces the ranging accuracy of the bomb-borne pulse laser, resulting in a serious weakening of the ground lethality of the bomb explosion.

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