Simulation Method and Simulator of Laser Imaging Radar Target Echo Signal

A laser imaging radar and laser radar technology, applied in the field of optoelectronic information, can solve the problems of a small number of optical echo channels, unusable working wavelengths, poor distance resolution, etc., to eliminate unstable response time and improve delay resolution. , the effect of good versatility

Active Publication Date: 2021-04-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a laser imaging system to solve the problems in the existing laser imaging radar target echo signal simulation technical scheme that different working wavelengths cannot be used universally, the number of optical echo channels is small, the distance resolution is poor, and there is an uncertain delay. Radar Target Echo Signal Simulation Method and Simulator

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  • Simulation Method and Simulator of Laser Imaging Radar Target Echo Signal
  • Simulation Method and Simulator of Laser Imaging Radar Target Echo Signal
  • Simulation Method and Simulator of Laser Imaging Radar Target Echo Signal

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[0067] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with the accompanying drawings and examples.

[0068] The parameters of the laser imaging radar targeted by the laser imaging radar echo signal simulator disclosed in this embodiment mainly include: the farthest detection distance is 3km, the detection distance resolution is 0.3m, the detector array size is 100×100, and the angle of view of the receiving optical system is 100×100. The field size is 3°×3°, and the repetition rate is 100 Hz.

[0069] Such as figure 1 As shown, the laser imaging radar target echo signal simulation method disclosed in this embodiment includes the following steps

[0070] Step 1: Establish a digital three-dimensional model of the lidar detection scene, and generate a laser echo signal delay matrix. A spherical model with a radius of 25 m was established with the three-dimensional mod...

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Abstract

The invention discloses a laser imaging radar target echo signal simulation method and a simulator, which belong to the field of photoelectric information technology. The laser pulse receiving device of the present invention converts synchronous laser pulses into synchronous signals and initial laser pulses; generates control instructions according to the target trajectory data, and generates a series of step delay signals with the same delay difference under the trigger of the synchronous signal, representing respectively A series of equal-delay surfaces; the laser pulse delay spatial reconstruction device spatially distributes the step-delay signals to their respective equal-delay planes to form a spatial two-dimensional delay signal array; the projection optical system The time signal is projected to the entrance pupil of the tested lidar receiving lens to realize the echo signal simulation. The invention can solve the problems in the existing target echo signal simulation technical scheme that different working wavelengths cannot be used universally, the number of optical echo channels is small, the distance resolution is poor, and there is an uncertain delay, etc., and is mainly used in the semi-physical simulation of laser imaging radar guided weapons system.

Description

technical field [0001] The invention relates to a laser imaging radar target echo signal simulation method and a simulator, which are mainly used in a semi-physical simulation system of laser imaging radar guidance weapons, and belong to the field of photoelectric information technology. Background technique [0002] The emergence and application of laser technology has promoted the development of laser imaging radar technology. Since the first ruby ​​laser came out in 1960, researchers have proposed the idea of ​​laser radar. Over the past half a century, laser radar technology has developed from a simple laser ranging system to a laser tracking, laser speed measurement, laser imaging, etc. function of complex lidar systems. According to the acquisition method of target information, direct detection lidar can be divided into single-point ranging lidar, line array imaging lidar and area array imaging lidar. It is widely used in military, civilian, remote sensing and other ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/497G01S17/89
CPCG01S7/497G01S17/89
Inventor 李卓高彦泽王欣杨苏辉李炎炎时庆峰周朗
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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