Boost engine cutoff estimation in Doppler measurement system

Details Boost engine cutoff estimation in Doppler measurement system Boost engine cutoff estimation in Doppler measurement system

1997-11-18

1999-06-15

Pihulic, Daniel T.

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

342115, G01S 1352

Patent

active

059126400

ABSTRACT:
An estimate of the time of the boost engine cut-off of a missile is provided by irradiating the missile after it is launched with continuous wave signals. The reflected continuous wave signals are detected and an inflection in the Doppler measurements of the reflected continuous wave signals provide an initial estimate of the boost engine cut-off time. A Kalman filter is used to provide initial estimates of the position and velocity of the missile at the boost engine cut-off time and a square root information filter responding to the Doppler measurement residuals after boost engine cut-off reduces the error in the initial estimate of the boost engine cut-off time to a minimum.

REFERENCES:
patent: 3876169 (1975-04-01), Fitzgerald et al.
patent: 4672381 (1987-06-01), Labbe et al.

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