Radar target doppler frequency scintillation simulator and method

DETAILED DESCRIPTION The present invention pertains to a radar target Doppler frequency scintillation simulator wherein a pseudo random signal is generated and commutated onto a plurality of output lines, filter means connected to each of the plurality of output lines provide a plurality of Gaussian random variable signals, which signals are squared and combined to produce an output signal representative of target power return, or amplitude scintillation.
One Gaussian random variable signal is not squared but is divided by the square root of the target power return and multiplied by the bandwidth of the Gaussian random variable signal and a scale factor.
The bandwidth is proportional to the target extent and target rotational rate relative to the radar.
The scale factor is a fixed number that converts the output to a Doppler frequency.
The final output signal is a radar target Doppler frequency scintillation signal.
It is an object of the present invention to provide new and improved radar target Doppler frequency scintillation simulating apparatus.
It is a further object of the present invention to provide a radar target simulator wherein the radar return signal is amplitude and frequency modulated to more closely represent a real target.
It is a further object of the present invention to provide a new and improved radar target Doppler frequency scintillation simulator for testing a large class of radar systems.
These and other objects of this invention will become apparent to those skilled in the art upon consideration of the accompanying specification, claims and drawings.