CAJ | 학술논문

为了实现对区域电离层的实时监测，利用连续运行参考站观测到的双频GPS数据提取电离层总电子含量（ TEC）信息．根据卫星和接收机硬件延迟在一定时间内比较稳定的特点，利用前一天计算的硬件延迟值来修正当日卫星传播路径上的总电子含量值，从而获得实时的电离层总电子含量．由此建立单历元多站多项式模型，结果表明：当基站间距离平均约为250 km时，由7个基站共同建立的实时模型内外符合精度平均优于0．8 TE CU（1TECU＝1016电子数/m2），将实时模型计算的电离层延迟改正信息应用于静态单频PPP定位中，点位精度能够达到0．3～0．4 m，与不进行电离层延迟改正的单频PPP定位结果相比提高80％左右．因此，进一步结合格网技术，可以实现区域电离层总电子含量的实时监测．
위료실현대구역전리층적실시감측，이용련속운행삼고참관측도적쌍빈GPS수거제취전리층총전자함량（ TEC）신식．근거위성화접수궤경건연지재일정시간내비교은정적특점，이용전일천계산적경건연지치래수정당일위성전파로경상적총전자함량치，종이획득실시적전리층총전자함량．유차건립단역원다참다항식모형，결과표명：당기참간거리평균약위250 km시，유7개기참공동건립적실시모형내외부합정도평균우우0．8 TE CU（1TECU＝1016전자수/m2），장실시모형계산적전리층연지개정신식응용우정태단빈PPP정위중，점위정도능구체도0．3～0．4 m，여불진행전리층연지개정적단빈PPP정위결과상비제고80％좌우．인차，진일보결합격망기술，가이실현구역전리층총전자함량적실시감측．
In order to achieve the real-time mo niot ring of regional ionosphere, the ionospheric tto al le ctron contetn ( TEC) is extracted rf om the dual-frequency measurements provided by the continu-ously operta in g reference stations ( COR S) .According to the stability of satellite and receive differ-ential code bias ( DCB) during a certain period, the real-time ionospheric TEC is calibratde by using differential code bai ses of the former day.Thus, the real-time multi-station polynomial TEC model can be established.Results show that the average internla and external accuracy of the model estab-lished by all th e seven referecn e stations can be better thna 0.8 TECU (1TECU=1016 electron/m2 ) when the average distance of the stations ra e ba uo t 250 km. Wiht the availability oft he ionospheric dle ay corrections calcul ated by the real-time model, ht e single precise point positioning ( PPP) point accuracy can reach 0.3 to 0.4 m, which improves 80% compared to the single PPP without iono-spheric delay corrections.As a result,the real-tim e TEC monitorign of a certain area can be achieved with the combination of the grid technology.