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To improve the detection performance of the pulse laser fuze circumferential detection system, this paper studies the echo characteristics of pulse laser fuze circumferential detection system and the adaptive filtering method of the echo signal under the cloud and fog environment. Based on the working principle of laser fuze and the constraint conditions that the system can detect ground targets, the calculation functions for the minimum scanning frequency of laser circumferential detection and the minimum pulse frequency of pulse laser are established; Due to the influence of cloud and fog environment on the echo signal, an adaptive filtering method is used to filter out interference signals and restore the real echo signal detected by the system. By integrating the detection model of the system for ground target, the echo power calculation mathematical model is derived using the bidirectional reflection distribution function. The filtering effect of adaptive filtering method on echo signals under different external interference factors, as well as the detection probability of the system under different motor scanning frequencies and laser pulse frequencies, were simulated and analyzed. The results demonstrate the feasibility of proposing the mathematical model and signal processing method in this paper.
Laser circumferential detection, Laser fuze, Echo power, Adaptive filtering, Detection probability.
JIE WU, Echo power calculation mathematical model and signal processing method of laser fuze based on circumferential detection mechanism, Optoelectronics and Advanced Materials - Rapid Communications, 17, 9-10, September-October 2023, pp.418-429 (2023).
Submitted at: June 2, 2023
Accepted at: Oct. 9, 2023