CAJ | 학술논문

针对基于能量有限的分簇传感网实现对非配合辐射源的高精确度无源定位问题，提出了一种适用于传感网的接收信号强度差(RSSD)定位方法，并在其相关性能分析基础上提出了以RSSD定位为辅、到达时间差(TDOA)定位为主的两轮协同定位方案，即以 RSSD定位结果作为目标位置初估计，并根据各簇在该初估计位置处的 TDOA 定位 CRB，选择部分预期定位精确度较高的簇参与进一步的 TDOA 定位，最后通过对这些簇定位结果的加权平均得到最终的目标位置估计。仿真结果表明，相比基于 GDOP 的簇选择标准和定位融合方法，提出的改进措施提高了定位精确度，而 RSSD/TDOA协同定位方案在保证较高定位精确度的同时，有效地减轻了网络负载，延长了网络生命周期，具有较好的工程应用前景。
침대기우능량유한적분족전감망실현대비배합복사원적고정학도무원정위문제，제출료일충괄용우전감망적접수신호강도차(RSSD)정위방법，병재기상관성능분석기출상제출료이RSSD정위위보、도체시간차(TDOA)정위위주적량륜협동정위방안，즉이 RSSD정위결과작위목표위치초고계，병근거각족재해초고계위치처적 TDOA 정위 CRB，선택부분예기정위정학도교고적족삼여진일보적 TDOA 정위，최후통과대저사족정위결과적가권평균득도최종적목표위치고계。방진결과표명，상비기우 GDOP 적족선택표준화정위융합방법，제출적개진조시제고료정위정학도，이 RSSD/TDOA협동정위방안재보증교고정위정학도적동시，유효지감경료망락부재，연장료망락생명주기，구유교호적공정응용전경。
A kind of RSSD(Received Signal Strength Difference) location method is proposed aiming at locating the uncooperative radiation source passively with high accuracy based on energy limited clustering sensor network. Two rounds cooperative location scheme relying on TDOA(Time Difference Of Arrival) location is proposed, in which RSSD is subsidiary and TDOA location is the main method. The preliminary estimation of target position is made by RSSD location method;then some clusters are selected with high expected accuracy to make further locating according to the CRB(Cramer-Rao Bound) of TDOA. Final estimation of target position is made by weighted averaging of these TDOA locating results. Simulation results show that, the proposed modified measures can improve the locating accuracy compared with clusters selection rule and locations fusion method based on GDOP(Geometry Dilution of Precision); and RSSD/TDOA cooperative location scheme can alleviate network loading effectively, extend network lifecycle, and achieve high accuracy of locating, therefore it has good application prospects in engineering practice.