不变量嵌入法解速度模糊的改进与实现  

Improvement and Realization of Invariant Embedding Method for Velocity Ambiguity Elimination

作　　者：邹德智 刘成[1] 陈凤友 

机构地区：[1]中国人民解放军91913部队40分队

出　　处：《雷达科学与技术》2017年第6期580-584,共5页Radar Science and Technology

摘　　要：针对某型低重频单脉冲测量雷达测速回路存在速度模糊值经常解不出来的问题,通过分析速度解模糊的原理,提出基于"不变量嵌入法"全数字改进的解速度模糊方法。将测速回路中的速度滤波值、速度预测值及速度微分值经过处理后,代入真实测距回路之外自建的一组测距回路中;经过一定时间的迭代后,对测距回路的距离微分采用最小均方误差法进行估计,解出速度模糊根数,采用实时校验对测速结果进行监测和修正。通过仿真和实际跟踪测量验证了该方法的有效性,并在某型高精密脉冲雷达系统中得以实际应用。This text is concerned with the elimination of velocity ambiguity lied in the speed loop of low pulse repetition frequency（PRF）monopulse radar.By analyzing the principle of velocity ambiguity elimination,a new digital and improved velocity ambiguity elimination method is put forward according to the invariant embedding method.The velocity filter value,velocity prediction value and velocity differential value in the speed measurement circuit are processed and then introduced into the distance measuring circuit.After iteration,the distance differential of the distance measuring loop is estimated by the least mean square error method,and the velocity ambiguity degree can be got.Real-time calibration is used to monitor and correct the velocity measurement results.The validity of the method is verified by simulation and actual tracking.The proposed method has been used in a kind of high precision monopulse tracking system.

关 键 词：单脉冲雷达 速度解模糊 不变量嵌入法 加速度补偿 速度回路 

分 类 号：TN958.4[电子电信—信号与信息处理]