|
|
- 2015
基于映射函数的对流层双向时间比对斜延迟分析
|
Abstract:
设计了利用对流层散射通信进行双向时间比对方法,对比分析了NMF、VMF1和GMF共3种映射函数特征和参数选取方法,简化并假设对流层大气层,提出了基于映射函数进行对流层双向时间比对斜延迟分析的方法,选取东北亚中纬度地区的4个代表性GPS测站进行了对比分析。根据所选测站的地理位置情况和探空数据分析表明,所选测站间的斜延迟呈现年周期余弦函数分布特征,且大致呈夏季最大冬季最小分布,且3种映射函数下斜延迟大致相同,GMF有实时获得的优势。研究了高度角变化条件下的斜延迟误差分布,运算结果表明斜延迟误差也近似呈余弦函数分布,且夏季最小冬季最大,在误差角为0.01°时,最大延迟误差对应的时延约为0.2ns。
| [1] | KORNEYEV V A, EPICTETOV L A, SIDOROV V V. Time & frequency coordination using unsteady, variable-precision measurements on meteor burst synchronization and communication equipment[C]// Proceedings of the 2003 IEEE International Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum. [S.l]: IEEE, 2003. |
| [2] | 刘强, 孙际哲, 陈西宏, 等. 对流层双向时间比对及其时 延误差分析[J]. 测绘学报, 2014, 43(4): 341-347. LIU Qiang, SUN Ji-zhe, CHEN Xi-hong, et al. Analysis of two way troposphere time transfer and its delay errors[J]. Acta Geodaetica Cartographica Sinica, 2014, 43(4): 341-347. |
| [3] | MARINI J W. Correction of satellite tracking data for an arbitrary tropospheric profile[J]. Rad Sci, 1972, 7(2): 223-231. |
| [4] | SAHA K, RAJU C S, PARAMESWARAN K. A new hydrostatic mapping function for tropospheric delay estimation[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2010(72): 125-134. |
| [5] | KOUBA J. Implementation and testing of the gridded Vienna mapping function 1 (VMF1)[J]. J Geod, 2008(82): 193-205. |
| [6] | BOEHM J, KOUBA J, SCHUH H. Forecast Vienna mapping functions 1 for real-time analysis of space geodetic observations[J]. J Geod, 2009(83): 397-401. |
| [7] | KOUBA J. Testing of global pressure temperature (GPT) model and global mapping function (GMF) in GPS analyses [J]. J Geod, 2009(83): 199-208. |
| [8] | 张明高. 对流层散射传播[M]. 北京: 电子工业出版社, 2004: 8-19. ZHANG Min-gao. Troposcatter propogation[M]. Beijing: Electronic Industry Press, 2004: 8-19. |
| [9] | NIELL A E. Global mapping functions for the atmospheric delay at radio wavelengths[J]. J Geophys Res, 1996, 101(B2): 3227-3246. |
| [10] | NIELL A E. Improved atmospheric mapping functions for VLBI and GPS[J]. Earth Planets Space, 2000(52): 699-702. |
| [11] | BOEHM J, WERL B, SCHUH H. Troposphere mapping functions for GPS and very long baseline interferometry from European centre for medium-range weather forecasts operational analysis data[J]. J Geophys Res, 2006, 111(B2): B02406. |
| [12] | BOEHM J, NIELL A, TREGONING P, et al. Global mapping function (GMF): a new empirical mapping function based on numerical weather model data[J]. Geophysical Research Letters, 2006, 33(7): L07304. |
| [13] | SONG H, IMAE M. Improvement of precision on two-way satellite time and frequency transfer[J]. Electronics Letters, 2009, 45(18): 945-946. |
| [14] | LIN H T, LIAO C S, CHU F D, et al. Full utilization of TWSTT network data for the short-term stability and uncertainty improvement[J]. IEEE Transactions on Instrumentation and Measurement, 2011, 60(7): 2564-2569. |
| [15] | MENDES V B, LANGLEY R B. An analysis of high-accuracy tropospheric delay mapping functions[J]. Phys Chem Earth (A), 2000, 25(12): 809-812. |
