摘要
针对双基地雷达的距离速度(RV)模糊函数形状和分辨能力随目标位置变化的问题,提出了一种基于RV模糊函数的双基地相位编码信号设计方法。分析了双基地雷达的几何结构和模糊函数,推导了双基地相位编码雷达信号的RV模糊函数、距离分辨力和速度分辨力,在根据目标位置确定相位编码的码元宽度和个数的基础上,通过模拟退火优化算法实现了相位编码的优化,优化后的信号在保持所需距离速度分辨力的同时使相关输出的积分旁瓣电平最小化。仿真结果表明,该方法有效地提高了双基地雷达信号的探测性能。
To solve the problem that the shape of range-velocity ambiguity function（RVAF） and the resolution characteristic of a bistatic radar are affected by the position of target,a new bistatic phase-coded radar signal design method is proposed based on a target position.The special geometrical configuration and the ambiguity function of the bistatic radar is analyzed.The expression of the RVAF and the range and velocity resolution of the bistatic phase-coded radar signal are deduced.The code width and the numbers are determined by the target position and the phase codes are optimized by the simulated annealing algorithm.The optimized signal can maintain the range and velocity resolution and minimize the integrated sidelobe level（ISL） of the correlator output.Simulation results show that this method improves the detection performance of the bistatic radar signal.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2010年第4期518-523,共6页
Journal of Nanjing University of Science and Technology
