Radio beacons/IMU integrated navigation for Mars entry

Details Radio beacons/IMU integrated navigation for Mars entry Radio beacons/IMU integrated navigation for Mars entry

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011adspr..47.1265l&link_type=abstract

Advances in Space Research, Volume 47, Issue 7, p. 1265-1279.

Computer Science

Scientific paper

High precision entry navigation capability is essential for future Mars pinpoint landing missions, together with the entry guidance and aerodynamic lift control. This paper addresses the issue of Mars entry navigation using inertial measurement unit (IMU) and orbiting or surface radiometric beacons. The range and Doppler information sensed from orbiting or surface radio beacons and the entry vehicle state information derived from IMU are integrated in Unscented Kalman filter to correct the inertial constant bias and suppress the navigation measurement noise. Computer simulations show that the integrated navigation algorithm proposed in this paper can achieve 50 m position error and 2 m/s velocity error, which satisfies the need of future pinpoint Mars landing missions.

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