基于筛选法的球载雷达解距离模糊改进方法

An Improved Algorithm of Resolving Range Ambiguity for Balloon-borne Radar Based on Screening

针对球载雷达多目标解距离模糊时面临的目标视在距离重合而不能进行正确解算、目标需要与距离门正确配对等问题,根据筛选法提出了一种改进的解距离模糊方法。该方法不需要目标与距离门正确配对,计算方法简便快捷,并且弥补了目标视在距离相同时筛选法无法准确解模糊的缺点。通过该方法与传统算法各方面进行性能比较,体现了其同样有良好的解模糊能力和纠错能力。仿真结果表明,在目标视在距离重合和有测距误差的情况下该方法也可以很好地解模糊,验证了该方法的有效性。

Resolving multiple target range ambiguity for balloon-borne radar has many problems.For example,when the targets have same apparent distance,traditional algorithms cannot resolve the real range of every target.Besides,the targets and distance gates match correctly is needed,etc.Aiming at these problems,an improved algorithm is proposed.This method doesn’t need target and range gate match correctly,simple in calculation,and makes up the shortcoming of screening method that it can’t resolve range ambiguity when the two targets have same apparent range.The performance of improved algorithm is compared with the traditional method,the results reflect that this method also has good capability for ambiguity resolution and error correcting.The simulation results show that the method can resolve range ambiguity accurately when the targets have same apparent range and range error.And simulation results show the validity of this method.