單雙頻混合GNSS變形監(jiān)測系統(tǒng)中單頻點電離層誤差改正
[Abstract]:The key to the deformation monitoring by using the single and double frequency GNSS mixed mode is to establish the correction model of the ionospheric error using the double frequency data, and to correct the ionospheric delay error of the single frequency point, so that the monitoring accuracy of the single frequency point can also meet the requirements. Using the data of single and double frequency ground subsidence monitoring network in Nansha, Guangzhou, four regional ionospheric error correction models of LCM-DIMM and LSM and their establishment schemes are given. The results show that the four ionospheric error correction models can significantly improve the monitoring accuracy of single frequency points. Among them, LCM and LIM are better, and the best processing strategy is to construct a regional ionospheric model by using three close double frequency points around a single frequency point.
【作者單位】: 中南大學(xué)地球科學(xué)與信息物理學(xué)院;
【基金】:中南大學(xué)研究生自主探索創(chuàng)新基金(2014zzts258)~~
【分類號】:P228.4
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