CAJ | 학술논문

G0分布模型可实现对不同均匀度雷达杂波的较好拟合，二维相关G0分布雷达杂波的精确仿真对雷达系统设计和性能评估具有重要意义。在利用分段多项式拟合的方法近似表示非线性变换的基础上，将二维相关的高斯随机过程作为输入，提出了基于无记忆非线性变换的二维相关G0分布雷达杂波仿真方法。更进一步，为了实现对杂波幅度与相关性的独立控制，并仿真具有同相和正交分量的相参雷达杂波，推导了单视条件下G0分布模型的球不变随机过程特征函数表达式，提出了基于球不变随机过程的仿真方法。仿真结果表明，这两种方法均能够仿真产生满足幅度和相关性要求的二维相关G0分布雷达杂波。
G0분포모형가실현대불동균균도뢰체잡파적교호의합，이유상관G0분포뢰체잡파적정학방진대뢰체계통설계화성능평고구유중요의의。재이용분단다항식의합적방법근사표시비선성변환적기출상，장이유상관적고사수궤과정작위수입，제출료기우무기억비선성변환적이유상관G0분포뢰체잡파방진방법。경진일보，위료실현대잡파폭도여상관성적독립공제，병방진구유동상화정교분량적상삼뢰체잡파，추도료단시조건하G0분포모형적구불변수궤과정특정함수표체식，제출료기우구불변수궤과정적방진방법。방진결과표명，저량충방법균능구방진산생만족폭도화상관성요구적이유상관G0분포뢰체잡파。
The G0 distribution is capable of fitting radar clutter with different degrees of heterogeneity,so the accurate simulation of bi-dimensional correlated G0 distributed radar clutter is a vital step in the radar system design and evaluation.In the base of the nonlinear transformation which was expressed approximately by the method of piecewise polynomial fitting,the simulation method of bi-dimensional correlated G0 distributed radar clutter based on memoryless nonlinear transformation was proposed by taking the bi-dimensional correlated Gaussian process as input.Furthermore,in order to control the amplitude and correlation of radar clutter independently and simulate coherent radar clutter with in-phase and quadrature component,the characteristic function of the haplopia G0 distribution was derived and the simulation methods based on spherically invariant random process were proposed.Simulation results show that both two methods can generate bi-dimensional correlated G0 distribution radar clutter which meets the requirements of amplitude and correlation.