Method and system for radar compatible data communication
AssigneeHughes Aircraft Company
InventorWilliam H. Fiden
Life of this patent
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Abstract
A method and a system which allows for simultaneous radar tracking and data communication. The method of the invention includes the steps of (a) encoding a radar transmit signal with message data in a transmitter; (b) receiving transmitted returns of said encoded radar signal in a first receiver; (c) decoding said received return signal to eliminate message data; (d) receiving said encoded radar signal in a second receiver; and (e) decoding said received radar signal to extract said message data. The system of the invention includes a transmitter equipped for encoding a radar transmit signal with message data; a first receiver capable of decoding returns from said transmitter signal to eliminate said message data; and a second receiver capable of decoding said radar signal to extract the message data.
Claims34
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means including:
- a transmitter including means for encoding a radar transmit signal with message data, said transmitter including means for modulating the phase of said transmitted signal with message data, said means for modulating the phase of said transmitted signal including means for generating a first signal having a phase component, said means for modulating the phase of said transmitted signal including mixer means for modulating said first signal with said message data to produce said encoded radar signal;
- a first receiver including means for decoding returns from said transmitted signal to eliminate said message data;
- and
- a second receiver including means for decoding said radar signal to extract said message data.
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means including:
- a transmitter including means for encoding a radar transmit signal with message data;
- a first receiver including means for decoding returns from said transmitted signal to eliminate said message data, said first receiver including means for decoding returns from said transmitted signals to provide digitized in-phase and quadrature signals representing said received radar returns;
- and
- a second receiver including means for decoding said radar signal to extract said message data.
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means including:
- a transmitter including means for encoding a radar transmit signal with message data;
- a first receiver including means for decoding returns from said transmitted signal to eliminate said message data;
- and
- a second receiver including means for decoding said radar signal to extract said message data, said second receiver including means for providing digitized in-phase and quadrature signals representing said transmitted signals.
A method for simultaneously transmitting a radar signal and a communication signal using a single transmitter and for receiving said radar transmission in a first receiver and for receiving said communication signal in a second receiver, including the steps of:
- (a) encoding a radar signal with a communication signal, further including the steps of:
- (i) modulating the phase of the radar with the communication signal,
- (ii) digitizing the communication signal,
- (iii) shifting the phase of the radar signal by a first value or a second value depending on the instantaneous logical state of the communication signal, and
- (iv) providing digitized in-phase and quadrature representations of the received radar signal;
- (b) receiving said encoded radar signal in a first receiver;
- (c) decoding said received radar signal to extract said radar signal;
- (d) receiving said encoded radar signal in a second receiver;
- and
- (e) decoding said received radar signal to extract said communication signal.
A method for simultaneously transmitting a radar signal and a communication signal using a single transmitter and for receiving said radar transmission in a first receiver and for receiving said communication signal in a second receiver, including the steps of:
- (a) encoding a radar signal with a communication signal;
- (b) receiving said encoded radar signal in a first receiver;
- (c) decoding said received radar signal to extract said radar signal;
- (d) receiving said encoded radar signal in a second receiver, including the step of providing digitized in-phase and quadrature signals representing said encoded radar signal;
- and
- (e) decoding said received radar signal to extract said communication signal.
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means having a first receiver including:
- means for decoding returns from a transmitted signal having message data encoded thereon, to eliminate message data therefrom and
- means for providing digitized in-phase and quadrature signals representing said received radar returns.
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means including receiver means for decoding a transmitted radar signal encoded with message data to extract said message data said receiver including means for providing digitized in-phase and quadrature signals representing said transmitted signals.
A combined radar and communication system including means for providing simultaneous radar and communication functions, said means including:
- a transmitter including means for encoding a radar transmit signal with message data, said transmitter including
- means for modulating the phase of said transmitted signal with message data, said means for modulating the phase of said transmitted data including
- means for generating a first signal having a first signal component and
- means for modulating said first signal with said message data to produce said encoded radar signal.
Dependencies are inferred from the claim text.