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- 2018
珞珈一号低轨卫星导航增强系统信号质量评估
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Abstract:
低轨卫星导航信号增强能够弥补现有中高轨导航卫星信号收敛慢、信号弱的不足，在下一代导航定位技术中占有重要地位。武汉大学研制的珞珈一号科学实验卫星搭载了导航增强载荷，能够在轨自动计算轨道和钟差，并自主生成和播发双频测距信号，首次实现了低轨卫星平台的导航信号增强。就珞珈一号卫星导航增强信号的质量，包括信号载噪比、伪距和载波相位测量精度以及单星授时精度进行了评估，结果显示，珞珈一号卫星高仰角的伪距和载波相位测量精度分别优于1.5 m和1.7 mm，能够满足导航信号增强的需求。珞珈一号卫星单星授时的精度在10~30 ns量级，证明了珞珈一号卫星星地测距链路的正确性和有效性
| [1] | Montillet J P, Bonenberg L K, Hancock C M, et al.On the Improvements of the Single Point Positioning Accuracy with Locata Technology[J].GPS Solutions,2013,18(2):273-282 |
| [2] | Montillet J P, Roberts G W, Hancock C, et al.Deploying a Locata Network to Enable Precise Positioning in Urban Canyons[J].Journal of Geodesy,2009,83(2):91-103 |
| [3] | Jardak N, Samama N.Indoor Positioning Based on GPS-Repeaters:Performance Enhancement Using an Open Code Loop Architecture[J]. IEEE Tran-sactions on Aerospace and Electronic Systems, 2009,45(1):347-359 |
| [4] | Chen L, Piché R, Kuusniemi H, et al. Adaptive Mobile Tracking in Unknown Non-Line-of-Sight Conditions with Application to Digital TV Networks[J].EURASIP Journal on Advances in Signal Processing,2014,2014:22 |
| [5] | Chen C, Han Y, Chen Y Z, et al.Indoor Global Positioning System with Centimeter Accuracy Using Wi-Fi[J].IEEE Signal Processing Magazine,2016, 33(6):128-134 |
| [6] | Wang L, Feng Y, Wang C.Real-Time Assessment of GNSS Observation Noise with Single Receivers[J].Journal of Global Positioning Systems, 2013,12:73-82 |
| [7] | Yang Yuanxi.Concepts of Comprehensive PNT and Related Key Technologies[J].Acta Geodaetica et Cartographica Sinica,2016, 45(5):505-510(杨元喜.综合PNT体系及其关键技术[J].测绘学报, 2016,45(5):505-510) |
| [8] | Yang Yuanxi. Resilient PNT Concept Frame[J].Acta Geodaetica et Cartographic Sinica,2018,47(7):893-898(杨元喜.弹性PNT基本框架[J].测绘学报,2018,47(7):893-898) |
| [9] | Li Deren,Shen Xin,Li Dilong, et al.On Civil-Military Integrated Space-Based Real-Time Information Service System[J]. Geomatics and Information Science of Wuhan University,2017,42(11):1501-1505(李德仁, 沈欣,李迪龙,等.论军民融合的卫星通信、遥感、导航一体天基信息实时服务系统[J].武汉大学学报·信息科学版,2017,42(11):1501-1505) |
| [10] | de Blasio G, Quesada-Arencibia A, García C, et al. Study on an Indoor Positioning System for Harsh Environments Based on Wi-Fi and Bluetooth Low Energy[J]. Sensors,2017,17(6):1299 |
| [11] | del Peral-Rosado J A, Raulefs R, Lopez-Salcedo J A, et al.Survey of Cellular Mobile Radio Localization Methods:From 1 G to 5 G[J].IEEE Communications Surveys & Tutorials,2018,20(2):1124-1148 |
| [12] | Li Xingxing, Ma Fujian, Li Xin, et al.LEO Constellation-Augmented Multi-GNSS for Rapid PPP Convergence[J].Journal of Geodesy, 2018, DOI:10.1007/s00190-018-1195-2 |
| [13] | Rao C R.Estimation of Variance and Covariance Components-MINQUE Theory[J].Journal of Multivariate Analysis, 1971,1(3):257-275 |
| [14] | Ge H, Li B, Ge M, et al.Initial Assessment of Precise Point Positioning with LEO Enhanced Global Navigation Satellite Systems (LeGNSS)[J].Remote Sensing,2018,10(7):984 |
| [15] | Li Bofeng, Ge Haibo, Ge Maorong, et al.LEO Enhanced Global Navigation Satellite System (LeGNSS) for Real-Time Precise Positioning Ser-vices[J]. Advances in Space Research, 2018,61:2942-2954 |
