CAJ | 학술논문

传统全球导航卫星系统信号发射时间的整毫秒恢复算法，在接收机概略位置未知时存在计算量剧增而无法应用的问题。利用北斗系统混合星座中GE O卫星电文速率高的这一特点，提出一种基于GE O粗定位的北斗接收机快速定位的方法。在接收机概略位置完全未知的情况下，使用已获取完整信号发射时刻的纯GE O星座进行粗定位，根据解算获得的概略位置对非GE O卫星发射时刻毫秒整数时间进行恢复，利用所有可见卫星进行精确定位。使用国际全球连续监测评估系统测站观测伪距对算法进行验证，国内测站可100％实现伪距恢复，完成快速定位。仿真遍历中国区域用户，在仿真伪距增加均值为0，标准差为6m噪声，截止仰角为0°时，中国附近区域实现快速定位概率均大于98．68％，其中约80％的中国附近区域可以100％实现卫星信号传输时间恢复并完成快速定位。
전통전구도항위성계통신호발사시간적정호초회복산법，재접수궤개략위치미지시존재계산량극증이무법응용적문제。이용북두계통혼합성좌중GE O위성전문속솔고적저일특점，제출일충기우GE O조정위적북두접수궤쾌속정위적방법。재접수궤개략위치완전미지적정황하，사용이획취완정신호발사시각적순GE O성좌진행조정위，근거해산획득적개략위치대비GE O위성발사시각호초정수시간진행회복，이용소유가견위성진행정학정위。사용국제전구련속감측평고계통측참관측위거대산법진행험증，국내측참가100％실현위거회복，완성쾌속정위。방진편력중국구역용호，재방진위거증가균치위0，표준차위6m조성，절지앙각위0°시，중국부근구역실현쾌속정위개솔균대우98．68％，기중약80％적중국부근구역가이100％실현위성신호전수시간회복병완성쾌속정위。
Without knowing the approximate position of the receiver,the millisecond recovery algorithm of traditional global navigation satellite system signal-radiation existed problem of increasing computation,but unable to be applied.A fast positioning method for BDS receiver was proposed according to the high navigation data rate of GEO(Geosynchronous Earth Orbit)satellites in BeiDou Navigation Satellite System.Firstly, an approximate position was got by coarse positioning using GEO constellation.Then the signal transmission time recovery of MEO/IGSO satellite was made according to the approximate position.Finally,all the visible satellites were used for precise positioning.Using iGMAS stations observation pseudorange to verify the proposed algorithm.The stations in China can 100% got full-pseudorange and obtained fast positioning.By using BDS broadcast ephemeris data,a simulation environment was built.The white noise with 6 meters standard deviation is added to satellites pseudorang.And the cut-off angle of elevation is 0°.The success rate of the quick location method is bigger than 98.68%.And about 80% of Chinese surrounding area can 100% guarantee a complete satellite signal emission time restoration and obtain an accurate position.