二维数字阵列三阶泰勒展开单脉冲角度估计

系统工程与电子技术

二维数字阵列三阶泰勒展开单脉冲角度估计

马晓峰1, 冯丹萍1,2, 盛卫星1, 韩玉兵1, 张仁李1

(1. 南京理工大学电子工程与光电技术学院, 江苏南京 210094；2. 中航工业雷华电子技术研究所，江苏无锡 214063)

出版日期:2016-07-22 发布日期:2010-01-03

Thirdorder taylor expansion based monopulse angle estimation for#br# 2-dimension digital array

MA Xiao-feng1, FENG Dan-ping1,2, SHENG Wei--xing1, HAN Yu-bin1, ZHANG Ren-li

(1. School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094,
China; 2. The Radar and Avionics Institute of Aviation Industry Corporation of China, Wuxi 214063, China)

Online:2016-07-22 Published:2010-01-03

摘要/Abstract

摘要：

全数字或相控阵子阵结构的数字单脉冲测角一般都采用基于单脉冲比一阶泰勒展开的测角公式,主瓣干扰下的自适应数字单脉冲测角也采用鉴角曲线斜率约束的方法,这些都会导致和波束主瓣宽度内偏离波束指向较远目标的测角偏差增大。〖JP3〗为了解决上述问题,针对任意二维数字阵列结构,推导了基于单脉冲比三阶泰勒展开的二维单脉冲测角公式,分析了公式求解的收敛问题。仿真结果表明所提方法对和波束主瓣范围内的目标均有较小的测角偏差,可以有效地提高主瓣干扰下的测角性能。该方法在提高测角性能的同时运算量增加不大,适合工程实现。

Abstract:

Digital monopulse angle estimation for full digital or subarray phased array system is generally based on the monopulse ratio firstorder taylor expansion, while the monopulse ratio is always linearly constrained in adaptive digital monopulse angle estimation for mainlobe jamming suppression. However, above methods will cause large angle estimation deviation when the target visibly departs from the antenna look direction. In view of the above problems, the 2-dimension monopulse angle estimation formula for arbitrary 2-dimension digital array structure is presented, which is based on the monopulse ratio thirdorder taylor expansion. The convergence analysis of formula solution is also given. Numerical simulations illustrate that less angle estimation deviation can be obtained for the target within the mainlobe region. It also demonstrates that the target angle estimation performance is improved in the presence of mainlobe jamming. The presented method is suitable for engineering implementation for its less calculation amount.

马晓峰1, 冯丹萍-1,2, 盛卫星1, 韩玉兵1, 张仁李1. 二维数字阵列三阶泰勒展开单脉冲角度估计[J]. 系统工程与电子技术.

MA Xiaofeng1, FENG Dan-ping-1,2, SHENG Wei--xing1, HAN Yu-bin1, ZHANG Ren-li1. Thirdorder taylor expansion based monopulse angle estimation for#br# 2-dimension digital array[J]. Systems Engineering and Electronics.