Modeling and simulation on laser detector applied to space detecting

The standard detecting model of the laser radar is given, and the forms of the detecting model for different detecting conditions are analyzed at first. On the base of foregoing analyses, the detecting range models reflecting the main parameters relationship of the laser detector are set up. On the other hand, the detection probability and the false probability are the important indices of overall design for the laser detector, and they are also the important parameters for appraising the reliability of the laser detector. So the mathematical models reflecting the interaction relationship of the detection probability, the false probability, the single-noise ratio and the detecting threshold value are built at the same time, and the Monte Carlo method is adopted to simulate the statistic distributed rules of the detection probabilities, the false probabilities, the single-noise ratio and the detecting threshold values for the laser detector based on the pulse system and the pseudorandom code system. The simulation results show that the ability of the laser detector using pseudorandom code system is better than that using single pulse system. It is proved by design and experiments that the theoretic foundations are provided by the range models and the simulation results for designing scientifically the laser detector.