Towards star tracker geolocation for planetary navigation
Towards star tracker geolocation for planetary navigation
- New search for: Jovanovic, Ilija
- New search for: Enright, John
- New search for: Jovanovic, Ilija
- New search for: Enright, John
Building on previous results that demonstrate the ability of star trackers and sun sensors to provide navigational data for rovers, we expand on this work and study the implementation. Mounting a star tracker, inclinometer, and GPS unit (used only for accurate timing and comparative truth) to a mobile rover, we test this system's ability to determine global position without prior knowledge. In this paper we study different artifacts of the raw data, we look at plausible deterministic corrections, and develop a calibration model. Our calibration model seeks to converge multiple position estimates taken from the same location but with different attitudes. Our methods improve convergence and accuracy, and are supported with field testing. While there is improvement, the performance is still inadequate, returning position errors of approximately four kilometers. It is evident that further study of the system is needed.
Document information
Towards star tracker geolocation for planetary navigation
2017-03-01
928705 byte
Conference paper
Electronic Resource
English
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