CAJ | 학술논문

针对多卫星联合捕获算法缺乏检测性能分析与评估的问题，该文采用处理增益来衡量联合捕获相对于传统捕获的灵敏度提高程度。分别给出了处理增益在匹配接收和不完全匹配接收条件下的表达式，详细推导了多卫星信号的时延和多普勒误差引起的检测损耗，比较了联合捕获与传统捕获在时延和多普勒误差下的检测损耗。采用数值仿真方法验证了理论分析的正确性，仿真结果表明联合捕获的检测损耗总体上小于传统捕获的检测损耗。
침대다위성연합포획산법결핍검측성능분석여평고적문제，해문채용처리증익래형량연합포획상대우전통포획적령민도제고정도。분별급출료처리증익재필배접수화불완전필배접수조건하적표체식，상세추도료다위성신호적시연화다보륵오차인기적검측손모，비교료연합포획여전통포획재시연화다보륵오차하적검측손모。채용수치방진방법험증료이론분석적정학성，방진결과표명연합포획적검측손모총체상소우전통포획적검측손모。
The joint acquisition algorithm is used for collection detection of the multi-satellite signals, given the lack of analysis and assessment on its detection performance. To make the case, the processing gain is adopted to measure the improved the level of sensitivity of the joint acquisition as opposed to the traditional acquisition;the analytic expressions of the processing gains are given respectively with the ideal assumption and the errors of the signal synchronization parameters; the detection losses caused by the delay and Doppler errors are analyzed in detail; the detection losses of the joint acquisition are compared with those of the traditional acquisition. Furthermore, some simulations are performed to verify the analytic results, which show that most of the detection loss in the joint acquisition is less than those in the traditional one.