Assessment of IRNSS-Only Data Processing: Availability, Single-Frequency SPP and Short-Baseline RTK
Assessment of IRNSS-Only Data Processing: Availability, Single-Frequency SPP and Short-Baseline RTK
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仅 IRNSS 数据处理的评估：可用性、单频 SPP 和短基线 RTK
DOI：
10.3390/rs14102462
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发表时间：
2022-05
期刊：
影响因子：
5
通讯作者：
Zhehao Zhang
中科院分区：
文献类型：
--
作者：
Lin Pan;Gen Pei;Wenkun Yu;Zhehao Zhang
印度区域导航卫星系统目前可利用8颗在轨卫星提供独立的定位服务。这项研究提供了一个全面的评估IRNSS的数据处理，包括卫星星座的可用性，单频单点定位（SPP）的性能，单频短基线实时动态（RTK）定位的性能。在其主要服务区域内，IRNSS的可用性情况下，可见卫星的平均数量为6-8颗，平均位置精度衰减（PDOP）值福尔斯在3.3 - 6.2之间，服务率接近100.0%。来自IRNSS服务区的14个站的数据集跨越一周用于位置确定。结果表明，在IRNSS单系统情况下，SPP在东、北、上三个方向的定位精度分别为6.031、6.015和9.668 m，短基线RTK的平均定位偏差分别为5.4、−21.1和−0.2 mm，标准差（STD）分别为7.8、19.2、在三个方向上分别为29.0mm。为了进行比较分析，还给出了GPS单系统和GPS/IRNSS双系统组合情况下的结果。IRNSS的定位性能不如GPS，GPS/IRNSS双系统组合解决方案相对于GPS单系统解决方案的性能改善并不显著。基于GPS/IRNSS双系统解算，对SPP的系统间偏差估计、SPP的码观测残差和短基线RTK的载波相位观测残差进行了表征。
The Indian Regional Navigation Satellite System (IRNSS) currently can provide independent positioning services with eight in-orbit satellites. This study provides a comprehensive assessment of IRNSS-only data processing, including the availability of satellite constellation, the performance of single-frequency single point positioning (SPP), and the performance of single-frequency short-baseline real-time kinematic (RTK) positioning. Regarding the availability of IRNSS-only case in its primary service areas, the average number of visible satellites is 6–8, and the average Position Dilution of Precision (PDOP) value falls between 3.3 and 6.2, under a service rate of nearly 100.0%. The datasets from 14 stations located in the IRNSS service areas spanning a week are used for position determination. The results show that under the IRNSS single-system case, the positioning accuracy of the SPP is 6.031, 6.015, and 9.668 m in the east, north, and up directions, respectively, and the mean positioning bias of short-baseline RTK is 5.4, −21.1, and −0.2 mm with a standard deviation (STD) error of 7.8, 19.2, and 29.0 mm in the three directions, respectively. For comparative analysis, the results of the GPS single-system and GPS/IRNSS dual-system combination cases are also presented. The positioning performance of IRNSS is inferior to that of GPS, and the performance improvement of GPS/IRNSS dual-system integrated solutions over GPS single-system solutions is not significant. Furthermore, based on the GPS/IRNSS dual-system solutions, the inter-system bias estimates from SPP, the code observation residuals from SPP, and the carrier phase observation residuals from short-baseline RTK are characterized.
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影响因子：
4.4
作者：
S. Zaminpardaz;Peter Teunissen;Peter Teunissen;N. Nadarajah
通讯作者：
S. Zaminpardaz;Peter Teunissen;Peter Teunissen;N. Nadarajah
GPS/GLONASS组合精密单点定位建模与评估
影响因子：
4.9
作者：
Cai, Changsheng;Gao, Yang
通讯作者：
Gao, Yang
DOI：
10.1002/9781118924396.wbiea2124
发表时间：
2018-09
期刊：
The International Encyclopedia of Anthropology
影响因子：
--
作者：
R. Ellen
通讯作者：
R. Ellen
影响因子：
1.9
作者：
R. Mukesh;V. Karthikeyan;P. Soma;P. Sindhu
通讯作者：
R. Mukesh;V. Karthikeyan;P. Soma;P. Sindhu
影响因子：
4.4
作者：
S. Zaminpardaz;P. Teunissen;N. Nadarajah
通讯作者：
S. Zaminpardaz;P. Teunissen;N. Nadarajah