辐射源无源定位技术研究

【作者】 赵凌峰；

【导师】 陆锦辉；

【作者基本信息】 南京理工大学 ， 电路与系统， 2007， 硕士

【摘要】 辐射源无源定位技术在军事和民用领域都具有十分重要的地位和作用。首先，本文研究了到达时差定位系统。详细介绍了几种到达时差估计的方法，通过计算机仿真，对这些方法的性能进行了说明和比较。在获得精确的到达时差信息的基础上，详细讨论了一种到达时差定位的方法。接着，本文还就到达频差定位系统进行了研究。详细讨论了单载频信号的到达频差估计。并对到达频差曲线的定位特性和到达频差定位的误差进行了分析和仿真。最后，本文研究了时差频差联合定位系统。通过互模糊函数的计算来实现时差频差的联合估计，并介绍了一种时差频差联合定位的方法，该方法通过把多个快拍的互模糊函数图映射到一个探测区域来实现对探测区域目标辐射源的定位。更多还原

【Abstract】 Passive location of emitter source has been playing an important role both in Militaryand civilian fields.Firstly, in this dissertation, the Time Difference of Arrival (TDOA) Location Systemhas been studied. Some methods to estimate TDOA have been introduced. Throughsimulations, the performance of these methods have been explicated and compared. Baseon the precise TDOA information, a TDOA Location method has been introduced.Secondly, the Frequency Difference of Arrival (FDOA) Location System has beenresearched. The estimate of the FDOA for the single-carrier frequency signals is studied indetails. Then the location characteristic of the FDOA curve and the error of the FDOAlocation have been analyzed and simulated respectively.Last but not least, the TDOA/FDOA Joint Location System has been studied.TDOA/FDOA joint estimation is realized through the Cross Ambiguity Function (CAF)algorithm. And we introduce a TDOA/FDOA Joint Location method. The emitter sourcecan be located through mapping the CAF surface from several snapshots to a commondetection region.更多还原