CAJ | 학술논문

针对现有基于TDOA的定位算法难以适应辐射源信号非同步到达的实时定位问题，提出了一种基于TOA预测的非同步照射辐射源定位算法。该算法采用脉冲样本图外推法通过各站接收的短时脉冲列计算TDOA序列（TDOAs），并通过牛顿迭代法实现对辐射源位置的初步估计。对新到达的脉冲采用脉冲样本图外推法进行TOA预测，判别脉冲属性，进而获得新的TDOA测量值，然后采用扩展卡尔曼滤波算法实现对辐射源位置的实时更新。仿真分析表明：该算法解决了非同步照射引起的难以计算 TDOA的问题，并增强了处理的实时性。
침대현유기우TDOA적정위산법난이괄응복사원신호비동보도체적실시정위문제，제출료일충기우TOA예측적비동보조사복사원정위산법。해산법채용맥충양본도외추법통과각참접수적단시맥충렬계산TDOA서렬（TDOAs），병통과우돈질대법실현대복사원위치적초보고계。대신도체적맥충채용맥충양본도외추법진행TOA예측，판별맥충속성，진이획득신적TDOA측량치，연후채용확전잡이만려파산법실현대복사원위치적실시경신。방진분석표명：해산법해결료비동보조사인기적난이계산 TDOA적문제，병증강료처리적실시성。
As the existing location method based on TDOA cannot adapt to the asynchronous arrival real-time location of emitter signals ,an asynchronous radiation emitter location method based on TOA prediction is proposed .Firstly ,the pulse pattern extrapolating method is adopted to calculate TDOA sequences (TDOAs) through the short-time pulse sequences received by observing platforms ,and the initial estimation of the emitter position is made with Newton iterative algorithm .Then ,the new arri-val pulse attribute is judged by TOA prediction based on the pulse pattern extrapolating method to ob-tain new TDOA values .The extended Kalman filter (EKF) algorithm is used to implement a real-time renewal of the emitter position .Simulation results show that the proposed algorithm can not only o-vercome the difficulty in calculating TDOA that results from asynchronous radiation and but also en-hance the real-time processing .