Range-only multistatic radar system
First Claim
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1. A process of determining real targets from bistatic range measurements in a range-only multistatic radar system having N2 radar stations, N≧
- 2, located in a grid pattern, said radar system having a plurality of transmitters and receivers, comprising the steps of;
applying a range difference similarity test to bistatic range differences to determine similar range difference elements;
applying a uniqueness test to said similar range difference elements;
computing positions of targets having unique range differences as determined by said uniqueness test; and
identifying real targets from a real time track file and track smoothing.
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Abstract
A range-only multistatic radar system has a plurality of radar stations located in a square grid pattern. Each radar station has a plurality of low power pulsed transmitters and receivers that operate on omnidirection whip antennae. Echo information received by the receivers is transmitted to a computer wherein a technique is employed to deghost and identify real targets. The computer applies a range difference similarity test, a uniqueness test, and a position test to determine real targets from the plurality of echo returns received.
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Citations
7 Claims
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1. A process of determining real targets from bistatic range measurements in a range-only multistatic radar system having N2 radar stations, N≧
- 2, located in a grid pattern, said radar system having a plurality of transmitters and receivers, comprising the steps of;
applying a range difference similarity test to bistatic range differences to determine similar range difference elements; applying a uniqueness test to said similar range difference elements; computing positions of targets having unique range differences as determined by said uniqueness test; and identifying real targets from a real time track file and track smoothing. - View Dependent Claims (2, 3, 4)
- 2, located in a grid pattern, said radar system having a plurality of transmitters and receivers, comprising the steps of;
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5. A range-only multistatic radar system comprising:
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a plurality of bistatic radar stations positioned in a grid pattern, said radar stations having transmit and receive means wherein each of said radar stations comprises at least one support tower, at least one omnidirectional receiver antenna located on said support tower, at least one omnidirectional transmitter antenna located on said support tower, at least one transmitter located on said support tower, said transmitter feeding said transmitter antennae with pulsed signals, at least one receiver connected to said receiver antennae, control means for connecting transmitters and receivers to said antenna, communicating means for transferring receiver echo information and power means for supplying electrical power to each of said radar stations; and a computer programmed to deghost targets and locate real targets, said computer connected to said receiver means, said computer having input echo information from targets detected by said transmit means.
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- 6. A range-only multistatic radar system wherein said radar system includes four radar stations, one station situated at each corner of a square, a first radar station having one on-line transmitter operating on a first frequency, a second radar station having one on-line transmitter operating on a second frequency and a receiver operating on said first frequency, said second radar station on a diagonal of said square opposite said first radar station, a third radar station having two receivers, one operating on said first frequency and the other operating on said second frequency, and a fourth radar station having two receivers, one operating on said first frequency and the other operating on said second frequency, said third and fourth radar station oppositely located on the other diagonal of said square, and computing means for deghosting and locating targets connected to said receivers, said computing means having echo information input from said receivers.
Specification