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Digital phase compensation receiving system for increasing improvement factors of magnetron radars

A technology for improving factor and receiving system, applied in the field of radar, achieving considerable military value and economic value, simplified circuit structure, and high engineering practical value

Inactive Publication Date: 2011-11-23
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention solves the problem of improving the improvement factor of the magnetron radar, and the radio frequency receiving and digital intermediate frequency receiving parts of the digital phase compensation receiving system adopt integrated and general modular technology

Method used

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  • Digital phase compensation receiving system for increasing improvement factors of magnetron radars
  • Digital phase compensation receiving system for increasing improvement factors of magnetron radars
  • Digital phase compensation receiving system for increasing improvement factors of magnetron radars

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Embodiment Construction

[0037] The present invention overcomes the shortcomings of the prior art such as the transmission injection type, the reception injection type, and the analog intermediate frequency coherent type that the transmission improvement factor is not much improved, and the improvement factor of the magnetron radar transmission system is increased by more than 10dB. The digital phase compensation receiving system The radio frequency receiving and digital intermediate frequency receiving part adopt the integrated and universal modular technology.

[0038] The composition of the hardware of the present invention is as figure 1 As shown: the present invention consists of a time sensitivity control (STC) system 1, a low noise amplifier (LNA) 2, a power divider 3, a mixer 4, a voltage controlled oscillator (VCO) 5, the first amplification filter 6, and the second Amplification filter 7, analog-to-digital converter (AD) 8, intermediate frequency (IF) processor 9, coherent processor 10, firs...

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Abstract

The invention relates to a digital phase compensation receiving system for increasing improvement factors of magnetron radars. The system comprises a sensitive time control system, a low noise amplifier, a power divider, a mixer, a voltage-controlled oscillator, filter amplifiers, an analog-digital converter 8, an intermediate frequency (IF) processor, a coherent processor, fiber interfaces, a BURST (sample) processor and reconstructor, a digital-analog converter, an analog-digital converter 14, a sequence circuit 1.6193M crystal oscillator and an emitting reference. The system overcomes the defect that the emitted improvement factors are slightly increased in the prior art and increases the improvement factors of the emission systems of the magnetron radars by more than 10dB. The radio frequency receiving and digital IF receiving parts of the system adopt the integration and universal modularization technologies. The system ensures that the magnetron radars can not only discover and track the big targets such as ships, warships and the like but also discover and track the quick small targets such as airplanes and the like, and has excellent economic and military benefits.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to a digital phase compensation receiving system for improving the improvement factor of magnetron radar. Background technique [0002] Modern high-performance radar systems require receivers with large dynamics, high linearity and ideal IQ (orthogonal) quality, which pose a great challenge to traditional analog receivers. With high-speed AD (analog-to-digital) converters and DSP ( With the development of digital signal processing) technology, the digital intermediate frequency receiving module has become one of the important technologies to improve the performance of modern radars. It uses intermediate frequency direct sampling and obtains video IQ signals through high-speed digital signal processing. It has high image frequency rejection ratio and linear dynamic range. Large, good consistency and other advantages. However, most of the current digital intermediate frequency receivin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/32G01S7/40
Inventor 程焰平朱华顺季飞袁同力祝佳秀
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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