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| Research on Improvement of Conventional Dual-frequency GPS Ionosphere Model with Carrier Wave Phase Observation |
| Received:May 25, 2010 Revised:February 15, 2011 |
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| DOI： |
| KeyWord:ionosphere model improvement |
| Author | Institution |
| ZHANG Jun-li |
Mailbox 2433 Beijing，Beijing ，China |
| TIAN Tian |
Mailbox 2433 Beijing，Beijing ，China |
| YI Xin |
Mailbox 2433 Beijing，Beijing ，China |
| CAO Zhi-ru |
Mailbox 5111 Beijing，Beijing ， China |
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| Abstract: |
| Two models of electron density in ionosphere were deducted, which were double-frequency code observation and double-frequency phase carrier phase observation using GPS. Mathematical expressions for solving the parameters in the two models were given. The basic conditions suitable for single epoch and many epochs were derived, through the example of the two models of the ionosphere correction error analysis and comparison. Results showed that the established model has the advantages of higher observation data utilization rate and higher precision. |
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