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| ????GPS/GLONASS?????????λ??????????????????? | |
| 引用本文： | 蔡昌盛,夏朋飞,史俊波,戴吾蛟.????GPS/GLONASS?????????λ???????????????????[J].大地测量与地球动力学,2013,33(2):54-57. |
| 作者姓名： | 蔡昌盛 夏朋飞 史俊波 戴吾蛟 |
| 作者单位： | 1. 中南大学测绘与国土信息工程系,长沙,410083 2. 卡尔加里大学测量工程系,加拿大 T2N1N4 |
| 摘 要： | ???????GPS/GLONASS?????????λ????????????????????????GPS???????λ??????????????????ж?????IGS?????????????????ο?????????????????????????λ???й??????????IGS???????????????????????????????????????????????????????????????λ???????????????????GPS??????GPS/GLONASS??????????????IGS??????????á? |
| 关 键 词： | GPS GLONASS IGS ???????λ ????????? |
| 收稿时间： | 2012-10-23 |
ESTIMATION OF ZENITH TROPOSPHERIC DELAY USING COMBINED GPS/GLONASS PPP METHOD |
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| Cai Changsheng,Xia Pengfei,Shi Junbo,Dai Wujiao.ESTIMATION OF ZENITH TROPOSPHERIC DELAY USING COMBINED GPS/GLONASS PPP METHOD[J].Journal of Geodesy and Geodynamics,2013,33(2):54-57. | |
| Authors: | Cai Changsheng Xia Pengfei Shi Junbo Dai Wujiao |
| Institution: | 1) Department of Surveying and Geo informatics, Central South University, Changsha 410083 2) Department of Geomatics Engineering, University of Calgary, Calgary T2N1N4, Canada |
| Abstract: | A combined GPS/GLONASS precise point positioning (PPP) approach is proposed to estimate zenith tropospheric delay (ZTD),and the results are compared with those from GPS only PPP. The new ZTD products of IGS are used as references to assess the estimated ZTD. The numerical computations are conducted using IGS data collected at three Chinese stations within one GPS week. The results show that the different settings of elevation angle cutoff and spectral density value of tropospheric delay parameter have a large impact on the ZTD estimates. Compared with GPS-only PPP, the ZTD estimates obtained from the combined GPS/GLONASS PPP are more consistent with IGS products. |
| Keywords: | GPS GLONASS IGS precise point positioning tropospheric delay |
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