无源定位技术研究及其定位精度分析

【作者】 刘钰；

【导师】 陈红林；

【作者基本信息】 西北工业大学 ， 系统工程， 2005， 硕士

【摘要】 随着电子干扰和反辐射导弹等雷达对抗技术的迅速发展,以雷达为代表的有源探测定位受到越来越严重的威胁。由于无源定位技术能在自身不辐射的条件下,隐蔽地确定辐射源的位置,具有作用距离远、抗干扰能力强的特点,对于提高系统在电子战环境下的生存能力和作战效能具有十分重要的作用,因此对于无源定位技术的研究越来越受到各国的重视。 本文主要研究了无源定位的三种基本定位体制:无源测向定位、无源测时差定位以及测向测时差联合定位法的定位算法,并对各自的定位性能进行了理论分析和计算机仿真,模拟出不同的布站、不同的测量误差以及不同测量子集的情况下,三种定位方法各自对应的定位精度(GDOP)分布图,得出了一些有价值的理论和仿真实验结果,这些结论可为今后在此领域的研究提供一定的技术参考。同时提出了一些消除定位模糊的方法。 最后,对运动单站对固定辐射源的二维和三维无源定位问题进行了研究。其中,对三维单站无源定位问题的讨论,在机载电子侦察设备中具有重要的应用价值。更多还原

【Abstract】 With the rapid development of radar countermeasures such as electronic jammers and anti-radiation missiles, the active position such as radar is threated strongly. Due to passive position can snugly asceriam radiation source’s location, and has the characteristic of positoning far and strong anti-jamming-power .This enhances the whole system’s viability and fight efficiency, so the research of passive position is regarded increasingly in all the countries.This text primarily researches three basic passive position systems: Angle of Arrival(AOA) measurement, time-difference-of-arrival(TDOA) measurement and AOA together with TDOA measurement. At one time each performance is analyzed, each graph of geometric dilution of precision(GDOP) is emulated for different station position, different measurement error, and different measurement subset. Accordingly some valuable academic and emulational results are obtained, which provide researchers in this field with definite technical reference. Meanwhile, some methods of eliminate position mistiness are provided.Finally, we research passive position problem of moving station to stable station in 2-D and 3-D space. Discussion about one station passive position in 3-D space has important value in the electronic reconnaissance field.更多还原