Velocity Determination Model and its Accuracy Analysis with Multi GNSS
-
摘要: 基于GPS多普勒测速原理,建立了GNSS多系统组合测速数学模型,结合实测数据对GNSS多系统组合的原始多普勒测速、相位一阶中心差分导出多普勒测速及二者组合测速精度进行了分析。结果表明,GNSS多系统组合能够显著提高原始多普勒测速及导出多普勒测速的精度,同时能够在一定范围内提高原始多普勒与导出多普勒组合测速的精度;采用原始多普勒与相位导出多普勒观测值组合,GNSS单系统时能够有效地提高测速精度,GNSS多系统组合效果不明显。Abstract: Based on the principle of velocity determiantion with doppler observations, the mathematic model of velocity determination with multiGNSS is introduced and then the accuracy and performance of velocity determination with raw doppler observations,derived doppler observations and the combined observations are tested and analysed.The results show that the combination of multiGNSS can improve the accucary of velocity significantly with raw doppler observations and derived doppler observations.The combination of raw doppler observations and derived doppler observation with single system also can improve accuacy of velocity,but when we use multiGNSS,it does not work very well for lack of rigorous stochastic model.
-
Key words:
- GNSS /
- velocity determination /
- raw doppler observations /
- derived doppler observations
-
[1] LI H, XU L W, SHU B,et al. A new method to improve the performance of multiGNSS pseudorange positioning in signaldegraded environment[J].Adv. Space Res,2016,58(4):577-586. [2] GUO, F,LI X X,ZHANG X H, et al. The Contribution of MultiGNSS Experiment (MGEX) to Precise Point Positioning[J]. Adv. Space Res, 2017(59):2714-2725. [3] 任晓东,张柯柯,李星星,等.BeiDou、Galileo、GLONASS、GPS 多系统融合精密单点[J].测绘学报,2015,44(12):1307-1313. [4] 贺凯飞.航空重力测量中GNSS动态定位与测速研究[J].测绘学报,2015,44(10):1179. [5] 汪亮,李子申,袁洪,等.BDS/GPS/GLONASS 组合的双频单历元相对定位性能对比分析[J].科学通报,2015,60(9):857-868. [6] 熊波,万卫星,宁百齐,等.基于北斗、GLONASS和GPS系统的中低纬电离层特性联合探测[J].地球物理学报,2014,57(11):3586-3599. [7] 肖云,夏哲仁.利用相位率和多普勒确定载体速度的比较[J].武汉大学学报(信息科学版),2003,28(5):581-584. [8] 何海波,杨元喜,孙中苗.几种GPS测速方法的比较分析[J].测绘学报,2002,31(3):217-221. [9] 王甫红,张小红,黄劲松.GPS单点测速的误差分析及精度评价[J].武汉大学学报(信息科学版),2007,32(6):515-519. [10] 张小红,郭博峰.单站GPS测速在实时地震监测中的应用[J].地球物理学报,2013,56(6):1928-1936. [10] ZHANG X H.GUO B F,GUO F,et al.Influence of clock jump on the velocity and acceleration estimation with a single GPS receiver based on carrierphasederived Doppler[J] .GPS Solutions,2013(17):549-559. [11] 郭爱智,王勇,刘根友,等.高频GPS实时单点测速误差分析[J].大地测量与地球动力学,2013,33(5):34-38. [12] LI M,LI W W,FANG R X,et al.Realtime highprecision earthquake monitoring using singlefrequency GPS receivers[J].GPS Solut,2015,19(1):27-35. [13] ZHANG J.Precise velocity and acceleration determination using a standalone GPS receiver in real time[D].School of Mathematical and Geospatial Sciences,RMIT University,2007. [14] 张小红,郭婓,郭博峰,等.利用高频GPS进行地表同震位移监测及震相识别[J].地球物理学报,2012,55(6):19121918. [15] 郑凯,刘站科,肖学年,等.航空重力GPS测速多粗差探测方法[J].测绘学报,2016,45(6):663-669. [16] 王潜心,徐天河,龚佑兴.利用中心差分法进行GPS定速时最佳点数的选取[J].武汉大学学报·信息科学版,2012,37(3):265-268. [17] 刘朝英,陈国,赵齐乐,等.BDS单点测速原理及精度分析[J].大地测量与地球动力学,2014,34(6):114-118. [18] WANG Q X, XU T H. Combining GPS carrier phase and Doppler observations for precise velocity determination[J]. Science China:Physics, Mechanics & Astronomy, 2011,54(6):1022-1028. [19] 孙宏伟,李玉莉,袁海波.日本准天顶卫星系统概要[J].武汉大学学报·信息科学版,2010,35(8):1004-1007.
点击查看大图
计量
- 文章访问数: 474
- HTML全文浏览量: 51
- PDF下载量: 134
- 被引次数: 0