Jul 2026· The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences· 0 citations· 2 references
Abstract
Abstract. This study presents a self-calibration method for optical Earth observation satellites equipped with matrix sensors. Precise geolocation of each pixel in a satellite image requires accurate modelling of the acquisition geometry, typically achieved through refinement that corrects the geometry using measurements such as correspondences between image pixels and ground coordinates, or between pixels in different images. A critical aspect of this modelling involves the sensor's internal geometry, which defines the line-of-sight (LOS) vector for each pixel in the focal plane. The calibration method proposed in this article eliminates the need for exogenous data (e.g., higher-resolution satellite images or airborne sensor imagery) by relying solely on a set of acquisitions in a specific configuration. The method is evaluated and validated using CO3D imagery. Several evaluation criteria were developed for this purpose, including the reliability of the refinement process, the quality of tie-point intersections, inter-site result comparisons, and alignment with absolute references. This paper does not include the in-orbit performances due to confidentiality agreement.
Abstract. As many observation data providers are delivering spaceborne optical images with a resolution close to airborne sources, users are expecting the same level of geolocation accuracy. Unfortunately, locating the line of sight of a camera on the ground from, at least, 500km is still a challenge. It requires a pre...
A. Barot, P. Favé, L. Gabet et al.· The International Archives o...· 0 citations
Abstract. High revisit-rate Synthetic Aperture Radar (SAR) constellations generate large volumes of imagery that require consistent geolocation accuracy to support applications such as change detection and interferometry. However, variations in orbit determination, attitude knowledge, and external factors such as Globa...
A. Johnsy, Eyrin Kim, Qiaoping Zhang et al.· The International Archives o...· 0 citations
The rapid advancement of synthetic aperture radar (SAR) satellites has enabled enhanced capabilities for all-weather and all-time Earth observation. Nevertheless, the geolocation accuracy of SAR images remains constrained by multiple error sources. Although ground calibration fields can substantially improve the geomet...
Haisong Weng, Zhiming Liu, Qiming Yuan et al.· IEEE Transactions on Geoscie...· 0 citations
On-orbit relative radiometric calibration (RRC) is a fundamental prerequisite for quantitative remote sensing analysis and high-level product generation. Although side-slither maneuvers provide a robust means for calibration, existing methodologies are often constrained by regularization inaccuracies, uneven distributi...
Tao Peng, Ru Chen, Qianyu Wu et al.· IEEE Transactions on Geoscie...· 0 citations
This paper evaluated image quality, algorithms and a workflow associated with matching horizons derived from 3D terrain data to ground imagery as a way to visually estimate a geographic position using a passive, vision-based navigation technique using long-standoff terrain features and a horizon detection algorithm hos...
J. Ruby, Jimmy R. Carter, Melissa Pham et al.· Applied Sciences· 0 citations
Abstract. The measurement of Ground Control Points is a crucial but time-consuming step in photogrammetric surveys, especially in the Built Heritage domain. This study investigates the use of a new generation Global Navigation Satellite System receiver equipped with an integrated camera to measure inaccessible points (...
Lorenzo Teppati Losè, F. Chiabrando, Fabio Giulio Tonolo· The International Archives o...· 0 citations
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