초록 ▼

Radar detection of accelerating airborne targets in accordance with the present invention utilizing a sequence of velocity, acceleration matched filters. This system includes a transmitter generating a signal oscillating at a predetermined frequency controlled by modulator such that the transmitter

Radar detection of accelerating airborne targets in accordance with the present invention utilizing a sequence of velocity, acceleration matched filters. This system includes a transmitter generating a signal oscillating at a predetermined frequency controlled by modulator such that the transmitter repeatedly outputs short duration pulses. The output pulse frequency is passed to an antenna that radiates the energy into free space. Reflected electromagnetic wave energy is received by the antenna to produce a radar return signal that is processed to a receiver that includes a radio frequency amplifier having an output that is mixed with a local oscillator signal an applied to an IF amplifier. An output of the IF amplifier is mixed with the output of an IF oscillator where the mixed signal passes through a low pass filter to a pulse compression network. An output of the pulse compression network is input to a matched filter processor array having multiple outputs applied to an adaptive threshold detector. Outputs from the adaptive threshold detector are applied to a display for creating human intelligent information.

대표청구항 ▼

[ We claim:] [1.] A radar system for detecting an accelerating airborne target against a cluttered background comprising:a transmitter for generating a pulse signal;an antenna coupled to the transmitter for transmitting the pulse signal and receiving an echo wave from the accelerating airborne targe

[ We claim:] [1.] A radar system for detecting an accelerating airborne target against a cluttered background comprising:a transmitter for generating a pulse signal;an antenna coupled to the transmitter for transmitting the pulse signal and receiving an echo wave from the accelerating airborne target and the cluttered background, said echo wave comprising a target echo wave and a clutter echo wave;a receiver coupled to the antenna for processing the echo wave;a plurality of matched filters coupled to the receiver for filtering the processed echo wave, each of the plurality of filters having coefficients to pass a specific target acceleration rate of the target echo wave and to substantially attenuate the clutter echo wave; anda plurality of sliding window integrators connected in a one-on-one arrangement to the plurality of matched filters for processing the output of the associated filter to detect the accelerating airborne target.