Digital bi-static spread spectrum radar
First Claim
1. 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; and
a 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.
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Abstract
A bi-static spread spectrum digital radar including a transmitting antenna and a receiving antenna array separate from and positioned at a distance from the transmitting antenna. The transmitting antenna transmits a pseudo random digital signal as produced by a pseudo random digital signal generator. The receiving antenna array receives signals simultaneously and parallely as reflected from a target by the transmitting antenna. A plurality of analog-to-digital converters are connected respectively to each element of the receiving antenna array so as to convert the received analog signal into a digital signal. Digital beams are produced and directed to a set of digital receivers. A processor is provided so as to produce a digital output from the set of digital receivers.
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Citations
10 Claims
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1. A bi-static spread spectrum digital radar comprising:
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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; and a 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification