摘要
海杂波是影响雷达对海工作的重要因素,海杂波的精确建模与仿真是实现雷达性能检测,以及算法优化的先决条件。在分析海杂波幅度分布特性、时间和空间相关特性的前提下,利用Cholesky分解并结合球不变随机过程法(SIRP,spherically invariant random processes),提出了一种用于生成时空二维相干相关K分布海杂波的仿真模型,仿真结果表明该方法能够生成满足时间和空间相关特性要求的二维海杂波,得到的数据可以直接作为雷达目标模拟器中的输入信号。
The performance of maritime surveillance radar is inevitably limited by the presence of sea clutter. Modeling and simulation of the clutter accurately is a prerequisite for optimizing the design of radar. The probability distribution function and temporal and spatial correlation features of the clutter analyzed, the paper shows a spherically invariant random processes model based on Cholesky to generate temporal-spatial 2-D coherent correlated K-distributed sea clutter, which is in accordance with the given temporal and spatial correlation properties. The effectiveness of this method is proved by the simulation results. The generated signal can be directly used in the simulation of the radar system.
出处
《中国电子科学研究院学报》
2008年第5期515-519,共5页
Journal of China Academy of Electronics and Information Technology
关键词
海杂波
时空
K分布
相干相关
球不变随机过程
sea clutter
spatial-temporal
K-distribution
coherent correlation
SIRP
