旋转相控阵雷达变数据率目标跟踪算法

doi:10.12305/j.issn.1001-506X.2021.03.10

摘要/Abstract

摘要：

旋转相控阵雷达由于天线面阵旋转和电子波束偏移限制, 每天线周期有66.7%左右的时间不能照射到正在跟踪的目标, 可连续取值的自适应变数据率跟踪算法不适用于旋转相控阵雷达。在Cohen研究基础上, 提出一种离散取值的变数据率跟踪算法应用于旋转相控阵雷达目标跟踪。该算法在直角坐标系下进行运动状态估计, 在球坐标系下计算跟踪残差, 利用量测噪声对残差进行归一化, 根据当前采样时刻天线法线方向与目标的相对位置确定下个周期的采样周期, 避免了过程噪声计算复杂等问题。最后, 以一个圆周机动的目标为例仿真验证了所提算法的正确性和有效性。

关键词: 旋转相控阵雷达, 机动目标跟踪, 变数据率, 跟踪残差

Abstract:

Due to the limitation of antenna array rotation and electron beam offset for the rotating phased array radar, the target being tracked can not be illuminated by the line period of about 66.7% per day. The adaptive variable updata rate tracking algorithm which can be continuously selected is not suitable for rotating phased array radar. On the basis of Cohen's research, a discrete variable updata rate tracking algorithm for rotating phased array radar target tracking is proposed. The algorithm estimates the motion state in rectangular coordinate system, calculates the tracking residual in spherical coordinate system, normalizes the residual error by measuring noise, and determines the sampling period of the next cycle according to the relative position between the antenna normal direction and the target at the current sampling time, so as to avoid the problem of complex calculation of process noise. Finally, a circular maneuvering target is taken as an example to verify the correctness and effectiveness of the proposed algorithm.

Key words: rotating phased array radar, target tracking, variable date rate, tracking residual

中图分类号:

TN953

李纪三, 蔡文彬, 耿利祥, 刘溶, 任渊. 旋转相控阵雷达变数据率目标跟踪算法[J]. 系统工程与电子技术, 2021, 43(3): 676-683.

Jisan LI, Wenbin CAI, Lixiang GENG, Rong LIU, Yuan REN. Variable date rate target tracking algorithm for rotating phased array radar[J]. Systems Engineering and Electronics, 2021, 43(3): 676-683.

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参数	采样点
参数	A→B	A→C	A→D	A→E	A→F
采样周期/s	0.25	0.5	2	2.25	2.5

参数	采样点
参数	B→C	B→D	B→E	B→F	B→next_A
采样周期/s	0.25	1.75	2	2.25	3.75

参数	采样点
参数	C→D	C→E	C→F	C→next_A	C→next_B
采样周期/s	1.5	1.75	2.25	3.5	3.75

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