Scholarlink

<p>The reliability of single-Beidou Navigation Satellite System (BDS) modules serves as a fundamental cornerstone for the application of BDS. In this study, based on a dual-antenna carrier-phase altimetry model, a systematic investigation and comparison of the altimetric performance between single-BDS modules (BDS(S)) and multi-constellation Global Navigation Satellite System (GNSS) modules was carried out. To achieve this, field experiments were conducted at two river stations with different flow velocity characteristics along the BA and FENG rivers in Xi’an, Shaanxi, China. These experiments enabled a comprehensive evaluation of the performance of the single-BDS module from multiple aspects, including the number of visible satellites, satellite spatial distribution, Ratio statistics, and water level retrieval accuracy. The results reveal that the BDS(S) scheme presents certain advantages in tracking BDS satellite signals. Moreover, the BDS(S) scheme exhibits dilution of precision (DOP) values and satellite availability comparable to those of the BDS + GPS(M) scheme under the experimental conditions. Regarding ambiguity resolution performance at the BA station, statistical analysis indicates that the BDS(S) scheme achieved an ambiguity-fixing rate of 98.6%, comparable to that of the BDS(M) scheme (98.2%), while maintaining a similarly low false-fix rate. The altimetry results obtained from different water bodies further indicate that the water level retrieval accuracy of GNSS reflectometry (GNSS-R) based on a single-BDS module can consistently reach centimeter-level precision, which is basically consistent with the accuracy of the BDS + GPS(M) scheme. In conclusion, the experimental results confirm the feasibility and stability of using a single-BDS module for GNSS-R water level monitoring. This finding provides experimental support for the independent deployment of the BDS in hydrological applications and paves the way for the development of low-cost, high-precision, and self-reliant monitoring instruments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Single-BDS GNSS-R water surface altimetry and performance analysis

  • 期刊论文

  • 发表日期：

    2026年6月25日

查看全文
  • Peiyuan Wang,
  • Junqiang Han,
  • Fang Cheng,
  • Pengfei Zhang,
  • Xiaolei Wang,
  • Rui Tu,
  • Weisheng Wang,
  • Majid Gulayozov,
  • Yaoming Li,
  • Xiaochun Lu

摘要

The reliability of single-Beidou Navigation Satellite System (BDS) modules serves as a fundamental cornerstone for the application of BDS. In this study, based on a dual-antenna carrier-phase altimetry model, a systematic investigation and comparison of the altimetric performance between single-BDS modules (BDS(S)) and multi-constellation Global Navigation Satellite System (GNSS) modules was carried out. To achieve this, field experiments were conducted at two river stations with different flow velocity characteristics along the BA and FENG rivers in Xi’an, Shaanxi, China. These experiments enabled a comprehensive evaluation of the performance of the single-BDS module from multiple aspects, including the number of visible satellites, satellite spatial distribution, Ratio statistics, and water level retrieval accuracy. The results reveal that the BDS(S) scheme presents certain advantages in tracking BDS satellite signals. Moreover, the BDS(S) scheme exhibits dilution of precision (DOP) values and satellite availability comparable to those of the BDS + GPS(M) scheme under the experimental conditions. Regarding ambiguity resolution performance at the BA station, statistical analysis indicates that the BDS(S) scheme achieved an ambiguity-fixing rate of 98.6%, comparable to that of the BDS(M) scheme (98.2%), while maintaining a similarly low false-fix rate. The altimetry results obtained from different water bodies further indicate that the water level retrieval accuracy of GNSS reflectometry (GNSS-R) based on a single-BDS module can consistently reach centimeter-level precision, which is basically consistent with the accuracy of the BDS + GPS(M) scheme. In conclusion, the experimental results confirm the feasibility and stability of using a single-BDS module for GNSS-R water level monitoring. This finding provides experimental support for the independent deployment of the BDS in hydrological applications and paves the way for the development of low-cost, high-precision, and self-reliant monitoring instruments.