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Passive radar signal transmitting and receiving system based on DTMB radiation waves

A passive radar and signal transmission technology, applied in the field of radar detection, can solve the problems of easy exposure, high cost and destruction of active radar, and achieve the effect of strong anti-stealth ability and anti-jamming ability

Inactive Publication Date: 2018-06-12
郑州微纳科技有限公司
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Problems solved by technology

[0003] On the contrary, the vast majority of modern military use active radar. Each radiation source is a complete micro-radar that can generate radar waves. It can generate radar waves to actively search for targets. The search capability is strong, but it is also It is easy to expose itself, be interfered with, or even destroyed, and the cost of active radar is relatively high

Method used

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  • Passive radar signal transmitting and receiving system based on DTMB radiation waves
  • Passive radar signal transmitting and receiving system based on DTMB radiation waves
  • Passive radar signal transmitting and receiving system based on DTMB radiation waves

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Embodiment Construction

[0027] In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

[0028] First of all, the so-called DTMB, its full name in English is Digital Television Terrestrial Multimedia Broadcasting, and its full name in Chinese is "frame structure, channel coding and modulation of digital TV terrestrial broadcasting transmission system". DTMB supports multiple business modes such as HDTV, SDTV, data broadcasting, Internet, and messaging, supports fixed, portable, pedestrian, and high-speed mobile reception, and supports various networking methods such as single frequency network and multi-frequency network. By combining different carrier modes, channel coding, symbol constellation mapping methods, frame header modes, etc., DTMB supports a total of 330 working modes. Aiming at the problems that active radar is easily interfered and des...

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Abstract

The invention discloses a passive radar signal transmitting and receiving system based on DTMB radiation waves, which is characterized by including a direct wave receiving antenna, an echo receiving antenna, an echo receiver, a direct wave receiver, a Beidou receiver, a communication adapter and an integrated data processing platform. By means of the above mode, the system uses the time basis reference of the terrestrial digital television signal to modify and optimize the data format protocol based on the existing national standard terrestrial television standard protocol, realizes the three-dimensional precise positioning and early warning tracking of airborne moving targets by matching time and estimating time delay information, has the characteristics of anti-stealth ability and stronganti-interference ability, and can be used for search, alert, guidance and command and the like of airborne targets by the air defense system.

Description

technical field [0001] The invention relates to the technical field of radar detection, in particular to a passive radar signal transmitting and receiving system based on DTMB radiation waves. Background technique [0002] At present, passive radar and active phased array radar are used in military reconnaissance. Passive radar can only find targets by receiving electromagnetic waves emitted by targets. Its search capability is limited and it is not suitable for modern military needs. [0003] On the contrary, the vast majority of modern military use active radar. Each radiation source is a complete micro-radar that can generate radar waves. It can generate radar waves to actively search for targets. The search capability is strong, but it is also It is easy to expose itself, suffer interference, or even destroy, and the cost of active radar is relatively high. [0004] Therefore, the military is in urgent need of a low-cost passive radar that can actively detect targets an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/66G01S13/06G01S7/36G01S19/25G01S19/30
CPCG01S7/36G01S13/06G01S13/66G01S19/256G01S19/30
Inventor 李卫校夏榆滨袁志巍
Owner 郑州微纳科技有限公司
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