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Distributed active phased array radar and beam forming method thereof

A phased array radar, distributed technology, applied in the field of phased array radar, can solve the problems of increasing radar data processing work, and achieve the effects of flexible data processing, real-time compensation, and improved performance.

Active Publication Date: 2013-03-06
NAT SPACE SCI CENT CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main challenge brought about by the advancement of digital technology is the massive increase in radar data processing work, which requires the use of hierarchical and distributed processing methods to process a large amount of radar data

Method used

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  • Distributed active phased array radar and beam forming method thereof
  • Distributed active phased array radar and beam forming method thereof
  • Distributed active phased array radar and beam forming method thereof

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Experimental program
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Embodiment 1

[0055] When the radar is working, the data processor first generates the independent transmission signal waveform of each antenna unit, and the waveform data is downloaded to the front-end digital unit in the transceiver component through the main control computer and the communication network. When the signal is transmitted, the front-end digital unit converts the waveform data into an analog transmission signal through an analog-to-digital converter (DAC), and the analog transmission signal is forced to be fed to 72 antenna units by the power amplifier in the transceiver component after being phase-shifted by a phase shifter. Radiated by the antenna in a specific direction in space. The 8-phase shifter can provide the phase shift of the transmitted and received signals, and the phase shift step size is 2°. The peak transmit power of each T / R module is 750W. When the signal is received, the echo signal received by each antenna is amplified by the low-noise amplifier in each ...

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Abstract

The invention relates to distributed active phased array radar and a beam forming method thereof. A transceiving component array consists of digital transceiving components which comprise analog front ends, power amplifiers, low-noise amplifiers and front-end digital units. The distributed active phased array radar further comprises a central processor, the central processor is connected with the multiple front-end digital units through a local area network by means of the hierarchical distributed processing technology, and used for setting operating modes of all of the front-end digital units and waveform data and receiving baseband data to guarantee reliability of target echo data subjected to digital synthesis and sending public clock signals to the front-end digital units through a clock network to guarantee synchronization of clock signals of each port. The multiple front-end digital units are correspondingly distributed in an antenna array, and each front-end digital unit is matched with one transceiving component. The distributed active phased array radar and the beam forming method thereof have the advantages of high flexibility, flexibility in data processing mode and improvement of phased array radar performances.

Description

technical field [0001] The invention relates to a phased array radar for realizing radar beam forming and space scanning, in particular to a distributed active phased array radar and a beam forming method thereof. Background technique [0002] Phased array radar came out in the late 1960s and was mainly used for early warning of long-range missiles. In the late 1980s, with the maturity of equipment and devices such as computers, VLSI, solid-state microwave power amplifiers, and digital phase shifters and the decline in cost, phased array radar technology developed rapidly and gained military popularity. While being widely used, it is gradually extended to the civilian field. [0003] Phased array radar, also known as phased array radar, is a radar that changes the beam direction by changing the phase of the radar wave. Because it controls the beam electronically instead of the traditional mechanical rotation of the antenna surface, it is also called electronic scanning rada...

Claims

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Application Information

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IPC IPC(8): G01S13/02G01S7/41G01S7/40
Inventor 阎敬业吴季孙波吴琼之南方
Owner NAT SPACE SCI CENT CAS
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