Patent ID: 6031485
Filing Date: 2000-02-29
Classification: G01S

Abstract:
A bi-static spread spectrum digital radar comprising:a transmitting antenna means;a receiving array antenna means separate from said transmitting antenna means and positioned at a distance from said transmitting antenna means, said transmitting antenna means for transmitting a pseudo random digital signal;a pseudo random digital signal generator connected to said transmitting antenna means;a digital clock generator connected to said pseudo random signal generator;a frequency converter electrically connected between said pseudo random signal generator and said transmitting antenna means;a power amplifier means electrically connected between said frequency converter and said transmitting antenna means, said power amplifier means for amplifying a signal passed by said pseudo random signal generator to said transmitting antenna means, said receiving array antenna means for receiving signals simultaneously and parallelly as reflected from a target by said transmitting antenna means;a plurality of low noise frequency converters connected electrically to said receiving array antenna means;a plurality of analog-to-digital converters connected to said receiving array antenna means and adapted to convert an analog signal from said receiving array antenna means into a digital signal;a digital beam forming means connected to said plurality of analog-to-digital converters, said digital beam forming means for producing a digital signal correlative of a signal received by said receiving array antenna means;a set of digital receivers positioned so as to receive a digital beam from said digital beam forming means, said set of digital receivers being integrated into at least one digital processor which is adapted to produce a digital output signal; anda display means connected to said at least one digital processor, said display means for showing the digital output signal in a humanly perceivable manner or for storing the digital output signal.