Integration of radar altimeter, precision navigation, and digital terrain data for low-altitude flight
Integration of radar altimeter, precision navigation, and digital terrain data for low-altitude flight
- New search for: Zelenka, Richard E.
- New search for: Zelenka, Richard E.
A Kalman filter for the integration of a radar altimeter into a terrain database-dependent guidance system was developed. Results obtained from a low-altitude helicopter flight test data acquired over moderately rugged terrain showed that the proposed Kalman filter removes large disparities in predicted above-ground-level (AGL) altitude in the presence of measurement anomalies and dropouts. Integration of a radar altimeter makes it possible to operate a near-terrain guidance system at or below 50 ft (subject to obstacle-avoidance limitations), whereas without radar altimeter integration, a minimum clearance altitude of 220 AGL is needed, as is suggested by previous work.
Document information
Integration of radar altimeter, precision navigation, and digital terrain data for low-altitude flight
AIAA Guidance, Navigation and Control Conference ; 1992 ; Hilton Head Island, SC, United States
1992-01-01
Conference paper
No indication
English
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