CoAuthors

Heike Peter (PosiTim UG, Germany); Jaime Fernández (GMV AD, Spain); Pierre Féménias (ESA/ESRIN, Italy)

Single-receiver GPS ambiguity resolution methods are beneficial for the precise orbit determination results of the Copernicus Sentinel satellites. The availability of so-called bias products for the GPS satellite is, however, mandatory to do the ambiguity-fixing with a single receiver. The GPS wide-lane bias product from CNES/CLS is widely used but also other products recently became available, e.g., the CODE bias product.
The continuous availability and reliable latency of such bias products is essential for operational orbit determination as it is done at the Copernicus POD Service for the Sentinel-1, -2, and -3 satellites.
The impact of the ambiguity-fixed carrier phases on the resulting Sentinel-3 orbit products is analysed. Different bias products are also compared based on Sentinel-3 orbit results. Due to the different latencies of the orbital products it is carefully investigated for which product lines dedicated bias products might be available in time.
This study will give an overview of the work done at the Copernicus POD Service to follow up recent developments in the frame of single-receiver ambiguity resolution for POD of the Copernicus Sentinel-3 satellites.