IRNSS和QZSS在各自主服务区域的L5定位性能评估：独立系统与GPS联合

doi:10.13474/j.cnki.11-2246.2021.311

测绘通报 ›› 2021, Vol. 0 ›› Issue (10): 88-93.doi: 10.13474/j.cnki.11-2246.2021.311

IRNSS和QZSS在各自主服务区域的L5定位性能评估：独立系统与GPS联合

钱文进¹, 张琳², 张泽烈¹, 曾攀¹, 姜紫薇¹, 瞿晓雯¹

1. 重庆市地理信息和遥感应用中心, 重庆 401147;
2. 重庆工业职业技术学院, 重庆 401120

收稿日期:2021-02-02 修回日期:2021-09-06 出版日期:2021-10-25 发布日期:2021-11-13
作者简介:钱文进(1987-),男,硕士,高级工程师,主要研究方向为GNSS技术研究应用、地理信息技术研究应用等。E-mail:270789427@qq.com
基金资助:
重庆市教委科学技术研究项目（KJQN202003204）；重庆市技术创新与应用发展专项（cstc2019jscx-msxmX0315）

Assessing the L5 positioning performance of IRNSS and QZSS in their primary service areas: stand-alone and combined with GPS

QIAN Wenjin¹, ZHANG Lin², ZHANG Zelie¹, ZENG Pan¹, JIANG Ziwei¹, QU Xiaowen¹

1. Chongqing Geomatic and Remot Sensing Center, Chongqing 401147, China;
2. Chongqing Industry Polytechnic College, Chongqing 401120, China

Received:2021-02-02 Revised:2021-09-06 Online:2021-10-25 Published:2021-11-13

摘要/Abstract

摘要： 印度区域导航卫星系统（IRNSS）与日本准天顶系统（QZSS）是近年来宣布正式运行的两个区域卫星导航系统。本文首先评估了IRNSS和QZSS在各自主服务区域的L5信号单点定位性能。然后，为了探究导航星座结构差异对各区域系统联合GPS在城市峡谷环境下定位性能的影响程度，详细对比分析了卫星截止高度角为5°、15°、25°、35°、45°、55°时各区域系统在其主服务区内联合GPS定位的表现。结果表明：① IRNSS在其主服务区内可提供全天连续独立L5定位服务，水平方向定位精度小于2.50m，高程方向定位精度小于4.10m；② QZSS在其主服务区内只能提供全天部分时段的独立L5定位服务，水平方向定位精度小于4.80m，高程方向定位精度小于7.40m；③由于QZSS独特的星座结构，其在主服务区城市峡谷环境中联合GPS定位的性能要优于IRNSS在其相应主服务区联合GPS定位的表现，尤其是在天空视野有限的情况下。本文结果对决策者设计新的区域导航系统具有一定的参考价值。

关键词: IRNSS, QZSS, 主服务区, 独立单点定位, 辅助GPS定位, 城市峡谷环境, L5信号

Abstract: The Indian Regional Navigation Satellite System (IRNSS) and Quasi-Zenith Satellite System (QZSS) are two Regional Navigation Satellite Systems (RNSSs) announced as fully operational in recent years. In this contribution, stand-alone L5 single point positioning (SPP) performances of IRNSS and QZSS are first assessed in their primary service areas. Then, the performance of each RNSS assisting GPS positioning with satellite cut-off elevation angles set at 5°, 15°, 25°, 35°, 45°, and 55° in its primary service area is compared and analyzed in detail. It is to examine to what extent the constellation configuration difference can affect the performance of each RNSS assisting GPS positioning in the urban canyon environment. The results demonstrate that:① IRNSS can provide 24-hour continuous independent L5 positioning service with a positioning accuracy of <2.50 m in horizontal, and <4.10 m in vertical in its primary service area; ② QZSS can only provide independent L5 positioning service of limited availability with a positioning accuracy of <4.80 m in horizontal, and <7.40 m in vertical in its primary service area; ③ the performance of QZSS assisting GPS positioning in the urban canyon environment in mainland Japan is better than that of IRNSS in its primary service area, especially in the situation of a limited sky view, due to its unique constellation configuration. The finding of this study could inspire the policy-makers when they are designing a new RNSS.

Key words: IRNSS, QZSS, the primary service area, stand-alone positioning, assist GPS positioning, urban canyon environment, L5 signal

中图分类号:

P228

钱文进, 张琳, 张泽烈, 曾攀, 姜紫薇, 瞿晓雯. IRNSS和QZSS在各自主服务区域的L5定位性能评估：独立系统与GPS联合[J]. 测绘通报, 2021, 0(10): 88-93.

QIAN Wenjin, ZHANG Lin, ZHANG Zelie, ZENG Pan, JIANG Ziwei, QU Xiaowen. Assessing the L5 positioning performance of IRNSS and QZSS in their primary service areas: stand-alone and combined with GPS[J]. Bulletin of Surveying and Mapping, 2021, 0(10): 88-93.

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IRNSS和QZSS在各自主服务区域的L5定位性能评估：独立系统与GPS联合

Assessing the L5 positioning performance of IRNSS and QZSS in their primary service areas: stand-alone and combined with GPS

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