A Novel Inertial-Aided Star Pattern Matching Method for Distributed Multiple FoVs

Abstract EN

An aerospace vehicle in high-speed flight involves distributed multiple fields of view (FoVs) of a star sensor, and the maneuvering of the vehicle requires inertial-aided star pattern matching.

Accordingly, an inertial-aided star pattern matching method for distributed multiple FoVs is proposed.

First, the observation and fusion principles of distributed multiple FoVs are illustrated.

Then, an inertial-aided star pattern matching scheme is designed based on the space-time distribution of the line-of sight (LoS) vector and inertial measurement information.

Next, an LoS vector estimation method assisted by inertial information and the dynamic establishment of a distributed local catalog are proposed.

Finally, in a simulation, the dynamic establishment of the part catalog improves the efficiency of star pattern matching by reducing the catalog scale, and the usability of inertial-aided star pattern matching is analyzed for different gyro and accelerometer precisions.