Accurate verification and evaluation of on-board GNSS-R interferometric altimetry under on-shore conditions
The on-board GNSS-R interferometric altimetry technology utilizes wideband hybrid codes modulated on GNSS satel-lite signals to achieve high-precision wide-swath sea surface altimetry.In order to evaluate the performance of on-board GNSS-R interferometric altimetry,this article designs an accuracy evaluation strategy for on-board GNSS-R interferometric altimetry based on the results of on-shore GNSS-R interferometric altimetry.The evaluation results show that GNSS-R interferometric altimetry is related to the signal system and signal-to-noise ratio of satellite navigation systems.On-board GNSS-R interfero-metric altimetry can achieve centimeter-level altimetry accuracy.The research findings of this article provide technical reference and data support for the engineering practice of subsequent on-board GNSS-R interferometric altimetry technology.