基于四阶累积量的微弱激光回波信号检测

针对四阶累积量运算量大、运算复杂度高的问题,提出采用峰度与递推算法相结合的方法,降低运算量和硬件实时实现的难度.结合微弱脉冲激光回波信号检测的实际问题,仿真验证了算法的有效性.

The detection of weak pulse laser echo signal by the forth-order cumulant

The forth-order cumulant, correlation detection and matched filter are studied in laser echo detection because the weak laser echo is polluted by noise and aberranced, expensile, attenuated. On the bases of theoretic analysis and emulation, the algorithm for laser echo detection is implemented on FPGA. It shows that the high-order cumulant has good performance and feasibility in weak laser echo detection.