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临近空间双基地雷达系统误差对定位精度的影响
王欢,高乾,宫健,冯坤菊
0
(空军工程大学 防空反导学院,西安 710051;空军通信士官学校 地空导航系,辽宁 大连 116600;解放军95169部队,南宁530000)
摘要:
针对地发空收临近空间双基地雷达站址波动造成目标定位误差的问题,建立了三坐标临近空间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定位精度的几何分布(Geometrical Dilution of Precision,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,系统对相对站址方向侧向低空来袭目标三维定位精度较差,对于相对站址方向正向来袭目标三维定位精度较高。
关键词:  临近空间;双基地雷达;三坐标雷达;三维定位;站址误差  定位精度
DOI:
基金项目:国家自然科学基金资助项目(61601502)
Influence of near space bistatic radar system′s systematic error on location accuracy
WANG Huan,GAO Qian,GONG Jian,FENG Kunju
(Air and Missile Defense College,Air Force Engineering University,Xi′an 710051,China;Department of Ground-to-Air Navigation,Air Force Communication NCO Academy,Dalian 116600,China;Unit 95169 of PLA,Nanning 530000,China)
Abstract:
The unstable constitution of the receiving platform of a near space bistatic radar can cause target location error.For this problem,this paper presents the mathematic model of target 3D location,calculates geometrical dilution of precision(GDOP)and analyzes the relationship between platform location error and 3D location precision with the geometric analytic method.The result of research indicates that platform location error′s influence on target location accuracy is small,and different coordinate axis has different impact on quantity of target location error.In addition,the location accuracy of target coming from sides of the bistatic radar system is poor than that of target coming from frontispieces of the bistatic radar system.
Key words:  near space  bistatic radar  3D radar  3D location  position location error  location accuracy
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