Passive laser imaging simulator capable of detecting full-range laser points and simulation method

Abstract

The invention discloses a passive laser imaging simulator capable of detecting full-range laser points and a simulation method, and the passive laser imaging simulator comprises: an optical receiving system which is used for coupling and outputting a received laser signal to multiple paths of optical fibers; an energy attenuation system which is used for carrying out independent optical power adjustable attenuation on the laser signals in each path of optical fiber and carrying out optical power adjustable attenuation on the beam-combined laser signals; a static distance simulation delay system which is used for respectively carrying out delay processing on the multiple paths of laser signals after the optical power adjustable attenuation, carrying out beam combination processing on the multiple paths of laser signals after the delay processing and then outputting the multiple paths of laser signals after the beam combination processing; and an optical transmitting system which is used for expanding and collimating the beam-combined laser signal after the optical power adjustable attenuation and then outputting the beam-combined laser signal. According to the invention, ground verification of the performance of the laser obstacle avoidance sensor is realized, and test requirements of different test environments such as a subsystem test environment and a whole device test environment can be met.

Description

technical field [0001] The invention belongs to the technical field of optical simulation, and in particular relates to a passive laser imaging simulator and a simulation method capable of detecting full-range laser points. Background technique [0002] In the mission of extraterrestrial celestial body detection, in order to achieve safe landing, the lander needs to hover at a certain height, and the laser obstacle avoidance sensor is used to reconstruct the terrain of the fire surface in three dimensions, and the safe area suitable for landing is found through the obstacle avoidance algorithm . It can be seen that the laser obstacle avoidance sensor is one of the key single machines to realize the safe landing of extraterrestrial objects. In order to ensure that the function and performance of the laser obstacle avoidance sensor during the landing process meet the actual use requirements, it is necessary to conduct sufficient test verification on the laser obstacle avoidan...

AI Technical Summary

Problems solved by technology

[0003] In the development and testing process of the stand-alone level, the laser imaging function and performance of the laser obstacle avoidance sensor can be verified by using the helicopter to fly and image the ground, but the test process requires a lot of financial, material and manpower. very high

In the subsystem test environment, the laser imaging function of the laser obstacle avoidance sensor can be verified by imaging the outdoor scene, but the imaging accuracy cannot be assessed

However, in the whole device test environment, limited by the conditions, it is impossible to directly perform imaging test on the laser obstacle avoidance sensor.

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