Microwave photon radar-communication integration method and device

A microwave photon and radar technology, applied in electromagnetic wave transmission systems, radio wave measurement systems, instruments, etc., can solve the problems of easy electromagnetic interference, excessive resource and space occupation, etc., and achieve bandwidth improvement, real-time signal processing, high radar Effect of distance resolution

Active Publication Date: 2019-06-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a microwave photon radar-communication integration method and device

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  • Microwave photon radar-communication integration method and device
  • Microwave photon radar-communication integration method and device

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Example Embodiment

[0034] In view of the shortcomings of the existing technology, the idea of ​​the present invention is to use microwave photonics technology, and by matching the period of the radar chirp signal and the phase encoded communication signal, realize the integration of the radar system and the communication system, make the system structure compact and avoid Electromagnetic interference between each other.

[0035] Specifically, at the transmitting end, the radar chirp signal and the phase-encoded communication signal are simultaneously electro-optically modulated on the first optical carrier, and then the obtained modulated optical signal is converted into an electric signal and then transmitted through the transmitting antenna. The radar chirp The sub-pulse time width of the signal is the same as the sub-symbol time width of the phase-encoded communication signal; at the receiving end, the signal received by the receiving antenna and the split signal of the radar chirp signal are sim...

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Abstract

The present invention discloses a microwave photon radar-communication integration method. At a transmitting terminal, radar linear frequency modulation signals and phase coding communication signalsare subjected to electro-optical modulation at the same time on a first optical carrier, then are converted to electrical signals and are transmitted through a transmitting antenna, and the sub pulsetime widths of the linear frequency modulation signals are the same as the sub code element time widths of the phase coding communication signals; at a receiving terminal, signals received by a receiving antenna and beam-splitting signals of the radar linear frequency modulation signals are subjected to electro-optical modulation at the same time on a second optical carrier and are subjected to frequency mixing and deramp by employing a photoelectric detector, and finally the radar echo signals in the deramping electrical signals and communication signals are subjected to filtering and sampling and signal processing to obtain corresponding radar detection information and communication information. The present invention further discloses a microwave photon radar-communication integration device. The microwave photon radar-communication integration method and device can effectively solve the problems that mutual separation of the current radar and the communication system causes large source occupation and easy generation of electromagnetic interference.

Description

technical field [0001] The invention relates to a microwave photon radar-communication integration method, belonging to the technical field of microwave photon intersecting with radar and wireless communication. Background technique [0002] Radar is the main means for humans to detect and identify all-weather targets. Multi-functional, high-precision, and real-time detection has always been the goal pursued by radar researchers. At the same time, since entering the information age, communication technology has developed rapidly, communication speed has been continuously improved, and bandwidth has been continuously expanded. With the continuous development of radar technology and communication technology, radar system and communication system have more and more common points in frequency range, transceiver structure, etc., radar communication integration technology has attracted more and more attention, and has become a new research hotspot. [0003] The integrated radar ...

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Application Information

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IPC IPC(8): G01S7/02G01S7/282G01S7/41H04B10/516
Inventor 张方正聂海江杨悦潘时龙
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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