Doppler Radar Error Equations for Damped Inertial Navigation System Analysis |
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Authors: | Kasper JF Nash RA |
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Institution: | The Analytic Sciences Corporation Reading, Mass. 01867; |
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Abstract: | The use of Doppler radar measurements to provide velocity damping for an aircraft inertial navigation system is considered. Three different Doppler antenna configurations are examined: two-axis stabilized, azimuth stabilized, and data stabilized antennas. A general reference velocity error equation is presented and appropriately evaluated for each of the Doppler configurations. Specific elements of the error equations are examined and physically interpreted for both local-level and space-stable inertial systems. Detailed examination of the interaction of Doppler radar and inertial navigation velocity error mechanisms is provided. |
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