Communication radar integrated transmitting-receiving method based on digital array antenna

A digital array radar and digital array technology, applied in the field of radar, can solve problems such as inconvenient control of the zero point position, inflexible beam switching, and difficult realization of side lobes, etc., to achieve flexible and controllable zero point position, fast and flexible beam switching, amplitude and The effect of continuous and precise adjustable phase

Active Publication Date: 2016-11-09
XIDIAN UNIV
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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a communication radar integrated transceiver method based on a digital array antenna, which can meet the performance requirements of communication and radar at the same time, so that signals can be transmitted and received at the same time by

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  • Communication radar integrated transmitting-receiving method based on digital array antenna
  • Communication radar integrated transmitting-receiving method based on digital array antenna
  • Communication radar integrated transmitting-receiving method based on digital array antenna

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] An integrated transceiver method for communication radar based on digital array antenna, which is used for signal transmission and reception of digital array radar, such as figure 1 As shown, the method includes the following steps:

[0026] Step 1. Determine the transmit beam weight vector of the digital array antenna, the transmit beam weight vector enables the digital array radar to form a main beam in the direction of the detection target, and the g...

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Abstract

The invention belongs to the technical field of radar and discloses a communication radar integrated transmitting-receiving method based on a digital array antenna. The communication radar integrated transmitting-receiving method may simultaneous satisfy the performance requirements of communication and radar systems and comprises steps of: determining the transmitting wave beam weight vector of the digital array antenna; determining the transmitting signal waveform of the digital array antenna; adding a cyclic prefix to a constant-mode-value OFDM signal; multiplying the OFDM signal with the cyclic prefix by transmitting wave beam weight vector to complete signal transmission; acquiring the receiving data of the digital array antenna and determining the radar weight coefficient and the communication weight coefficient of the receiving end of the digital array antenna; obtaining a radar channel receiving signal according to the receiving data and the radar weight coefficient, and performing matched filtering on the radar channel receiving signal to obtain the distance information of a radar target; and obtaining a communication channel receiving signal according to the receiving data and the communication weight coefficient, and performing signal equalization coherent digital demodulation on the communication channel receiving signal successively so as to obtain a data bit stream transmitted by a communication base station.

Description

technical field [0001] The present invention relates to the field of radar technology, in particular to a communication radar integrated transceiver method based on a digital array antenna, which is used for the communication integrated signal transmission and reception of the digital array radar, and the communication radar integrated signal refers to modulation on the radar signal waveform Communication information, the two share a signal waveform, so as to realize the integration of communication and radar. Background technique [0002] With the development of radar technology and digital technology, modern radar is gradually digitized, and more and more attention and research have been paid to digital radar. Digital array radar is the main type of digital radar. Different from the traditional phased array radar, the digital array radar is a fully digital array scanning radar that adopts digital beamforming technology for both transmitting and receiving beams. The requir...

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Application Information

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IPC IPC(8): G01S13/88G01S7/28H04L27/26
CPCG01S7/2813G01S13/88H04L27/2602H04L27/2626H04L27/2647
Inventor 曹运合吴文华张晓波夏香根栾苏珍苏洪涛
Owner XIDIAN UNIV
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