Pulse parameter encrypted laser ranging system and method

A technology of laser ranging and pulse parameters, which is applied in the field of laser scanning, can solve the problems of light, snow, rain, smoke and other atmospheric particles, the decrease of the accuracy of missile-borne pulse laser ranging, and the weakening of the ground lethality of bomb explosions. Achieve the effect of improving anti-interference ability, eliminating interference effect and improving anti-blinding effect

Pending Publication Date: 2018-08-17
深圳市砝石激光雷达有限公司
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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 atmos

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  • Pulse parameter encrypted laser ranging system and method

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0024] Please refer to the example figure 1 , shows a pulse parameter encrypted laser ranging system 100 provided in this embodiment, including a laser detector, a pulse transmitting system 10, a laser pulse receiving system 20, a microcontroller 30, and a time interval measuring unit (abbreviated as TDC) 40 And pulse modulation encoding device 50, the pulse transmitting system 10 is used to transmit pulsed laser, the laser pulse receiving system 20 is used to receive and process the pulse echo reflected by the detection target before entering the laser detector, the micro-control The device 30 is respectively connected with the laser detector, the pulse transmitting system 10, and the laser pulse receiving system 20 and provides corresponding control signals to read the corresponding measurement data for calculation and processing. The pulse mod...

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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 ...

Claims

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Application Information

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IPC IPC(8): G01S17/10
CPCG01S17/10
Inventor 刘庆京蒋柏娴蒋伟
Owner 深圳市砝石激光雷达有限公司
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