CAJ | 학술논문

提出了一种基于到达时间（time of arrival，TOA）和到达时间差（time difference of arrival，TDOA）的空中运动平台对目标高精度三维定位的无源定位方法。该方法使用3个辅站信号到空中运动平台的 TOA 以及辅站位置确定空中运动平台自身的位置，然后依据目标散射回波到达各个辅站与空中运动平台的 TDOA 确定目标的位置。分析了三维 TDOA 目标定位模糊产生的原因，提出了一种无模糊的高精度 TDOA 目标位置求解算法。仿真结果表明，该算法比经典的 TDOA 定位算法精度高，而且不存在定位模糊，从而验证了该空中运动平台对目标进行无源定位方法的有效性以及正确性。
제출료일충기우도체시간（time of arrival，TOA）화도체시간차（time difference of arrival，TDOA）적공중운동평태대목표고정도삼유정위적무원정위방법。해방법사용3개보참신호도공중운동평태적 TOA 이급보참위치학정공중운동평태자신적위치，연후의거목표산사회파도체각개보참여공중운동평태적 TDOA 학정목표적위치。분석료삼유 TDOA 목표정위모호산생적원인，제출료일충무모호적고정도 TDOA 목표위치구해산법。방진결과표명，해산법비경전적 TDOA 정위산법정도고，이차불존재정위모호，종이험증료해공중운동평태대목표진행무원정위방법적유효성이급정학성。
The target location could not be estimated in an aerial moving platform with a conventional passive location system.Based on time of arrival(TOA)and time difference of arrival(TDOA),a novel 3D target positioning scheme is provided,in which the position of an aerial moving platform can be located by u-sing TOA information of three signals and geographic locations from three auxiliary stations and the target position can be located with the help of TDOAs from the target scattering echoes recorded by the aerial mov-ing platform and three auxiliary stations.The reason why there is location ambiguity in the 3D TDOA loca-tion method is uncovered,and a high precision TDOA target positioning algorithm without location ambigui-ty is proposed.Compared with the classic TDOA location algorithm,the proposed algorithm can not only improve the location accuracy,but also eliminate the location ambiguity.The effectiveness and correctness of the passive 3D target location method of the aerial moving platform are validated by favorable performance of the simulation results.