Tracking system utilizing Kalman filter concepts

Details Tracking system utilizing Kalman filter concepts Tracking system utilizing Kalman filter concepts

1973-11-23

1976-04-20

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 922

Patent

active

039523047

ABSTRACT:
A monopulse radar tracking system is disclosed employing four tracking channels, one for each of range, velocity, azimuth and elevation. The two angle channels are referenced directly to antenna coordinates. Each channel is mechanized by a stored program in a digital computer, and the mechanization employs Kalman filtering with gain factors continually optimized for measured signal-to-noise ratios. Angular rate commands for the antennas are obtained by passing pointing error estimates from the angle channels through a compensator for antenna motion and adding line-of-sight rate estimates from the angle filter channels. Cross-coupling between channels is provided, and each channel is aided by outputs from an inertial navigation platform. Preaveraging of discriminants received between computational cycles is provided.

REFERENCES:
patent: 3646554 (1972-02-01), Fierston et al.
patent: 3688313 (1972-08-01), Kern
patent: 3797017 (1974-03-01), Taylor

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