CAJ | 학술논문

零记忆非线性变换(ZMNL)法和球不变随机过程(SIRP)法是模拟K分布杂波的两种常用方法。针对传统ZMNL方法中形状参数(半)整数化所导致的杂波模拟偏差问题，该文提出采用增加Gamma分布生成支路的方法进行改进，改进后的方法能够模拟任意形状参数的 K 分布杂波；针对传统 SIRP 方法运算量较大的问题，给出了一种改进的调制变量产生方法，该方法能够避免求解非线性方程，极大地降低了运算量，提高了仿真速度。仿真结果验证了改进方法的有效性。
령기억비선성변환(ZMNL)법화구불변수궤과정(SIRP)법시모의K분포잡파적량충상용방법。침대전통ZMNL방법중형상삼수(반)정수화소도치적잡파모의편차문제，해문제출채용증가Gamma분포생성지로적방법진행개진，개진후적방법능구모의임의형상삼수적 K 분포잡파；침대전통 SIRP 방법운산량교대적문제，급출료일충개진적조제변양산생방법，해방법능구피면구해비선성방정，겁대지강저료운산량，제고료방진속도。방진결과험증료개진방법적유효성。
Zero Memory NonLinearity (ZMNL) and Spherically Invariant Random Process (SIRP) are two commonly used methods in K-distribution clutter simulations. An improved simulation method, which adds abranch of Gamma-distributed variable and extends the shape parameter to arbitrary positive real, is proposed to address the clutter simulation error in the conventional ZMNL method. To reduce the computation required for the conventional SIRP method, an improved method of modulation variable generation is also proposed, what avoids large computations for solving nonlinear equations and improves the simulation speed. The simulation results verify the effectiveness of the improved methods.