近太空双基地雷达定位站址误差影响分析  

Influence of Platform Location Error of Near Space Bistatic Radar System Location

作　　者：宫健 王欢[2] 郭艺夺[2] GONG Jian;WANG Huan;GUO Yiduo(University of Electronic Science and Technology of China, Chengdu 611731, China;Air Force Engineering University, Xi’an 710051, China;Tongfang Electronic Science and Technology Co Ltd, Jiujiang 332007, China)

机构地区：[1]电子科技大学,四川成都611731 [2]空军工程大学,陕西西安710051 [3]同方电子科技有限公司,江西九江332007

出　　处：《雷达科学与技术》2019年第2期138-142,共5页Radar Science and Technology

基　　金：国家自然科学基金青年基金(No.61601502;61501501)

摘　　要：地发空收近太空双基地雷达R站站址波动造成目标定位误差,针对该问题,建立了两坐标近太空双基地雷达目标三维定位的数学模型,采用解析几何法推导了目标定位误差(GDOP),仿真分析了站址误差对目标三维定位精度的影响。研究表明,站址误差对目标三维定位精度的影响较小,不同坐标轴坐标的误差对目标定位精度影响大小不同。另外,站址误差引起的目标三维定位误差中的VGDOP分量对目标空间几何位置较为敏感,而HGDOP分量对目标空间几何位置不敏感。The unstable constitution of the receive platform of a near space bistatic radar can cause target location error. This paper presents a mathematic model of target 3D location, calculates GDOP and analyzes the relationship between platform location error and 3D location precision with the method of geometric analysis. The research results indicate that the influence of platform location error on target location accuracy is small, and different coordinate axis errors have different impacts on target location error. In addition, VGDOP, which is part of GDOP, is sensitive to the geometry of target position, while HGDOP is not.

关 键 词：近太空 双基地雷达 两坐标雷达 三维定位 站址误差 定位精度 

分 类 号：TN958[电子电信—信号与信息处理]