Other

Raytheon Company

United States of America As Represented by the Secretary of the Air Force

Peter F Barbella

Michael A Davis

Barbara E Pauplis

Ronald A Wagner

Jeffrey E Carmella

Malcolm F Crawford

William M Kaupinis

Tamara L Franz

Tamara Franz

A method for processing pulsed-Doppler radar signals to detect a target includes transmitting radar signals from a radar system according to a predetermined frequency technique including signals having frequency diversity, receiving signals within a frequency band, including a target return signal having a frequency indicative of the velocity of the target, and transforming the target return signal using a Fourier Transform having a variable frequency scale.

Technique for non-coherent integration of targets with ambiguous velocities

A method for calibrating the radar system includes the steps of: replacing stored statistically generated 'average' error correction coefficients with error correction coefficients personal to a missile under test. More particularly, stored in the missile's memory are: (a) first personalized error correction coefficients generated in response to test signals produced internal to the missile and injected into a monopulse arithmetic unit for the missile's receiver/processor; and (b) a second set of personalized error coefficients generated in response to test signals external to the missile and injected through the missile's antenna to the receiver/processor. The missile includes a radio frequency (R.F.) energy test signal generator for performing a test during the missile's flight to determine 'in-flight' personalized error correction coefficients. The test is performed in-flight by injecting the R.F. energy test signal generated internal to the missile during the missile's flight into the monopulse arithmetic unit for the receiver/processor. The receiver/processor: (a) compares the first set of error correction coefficients with the 'in-flight' error coefficients and adjusts the second set of error correction coefficients in accordance with such comparison; and, (b) if R.F. energy external to the missile is less than a predetermined threshold level, uses the adjusted second set of coefficients during the missile's flight to produce boresight error signals; otherwise, the receiver/processor uses unadjusted first set of error correction coefficients.

Guided missile calibration method

A radar fuzing system for use in a guided missile wherein the system is tuned in accordance with the estimated intercept closing velocity to permit the use of narrower bandpass filters and thereby reduce the probability of detecting pulse repetition frequency lines and very low Doppler returns from chaff bundles.

Radar fuze system

Growing community of inventors

Littleton, MA, United States of America

Peter F Barbella