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Radar video frequency data real time compression and decompression transmission method

A technology for video data and transmission methods, applied in transmission systems, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve problems such as poor anti-interference ability, large transmission loss, and low reliability

Inactive Publication Date: 2006-06-28
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

The traditional multi-cable transmission method has disadvantages such as complex connection, low reliability, poor anti-interference ability, and large transmission loss. [1][2]
Optical fiber transmission is high-speed, but in practical applications, there are problems such as requiring special tools for wiring, time-consuming and labor-intensive, and high cost. [3]

Method used

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  • Radar video frequency data real time compression and decompression transmission method
  • Radar video frequency data real time compression and decompression transmission method
  • Radar video frequency data real time compression and decompression transmission method

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Embodiment Construction

[0029] The hardware system of the present invention includes two parts, an encoding board and a decoding board respectively located on the radar vehicle and the command vehicle, connected in the form of twisted-pair wires through two RS485 ports, and the shortest communication distance is 500m. There are two channels between the radar vehicle and the command vehicle (distinguished by the main channel and the secondary channel). The encoding board compresses the echo data and transmits it to the decoding board through the main channel for decoding, and the decoded echo data is directly sent to the graphic display terminal. The communication between the two vehicles is carried out through the secondary channel. The radar vehicle transmits beam attribute codes containing important information such as beam position, range, and radar working status to the command vehicle. The command vehicle sends command control codes to the radar vehicle. At the same time, the secondary channel is...

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Abstract

The encoding board and the decoding board located at the radar truck and the command car respectively are connected through two RS485 ports in twisted-pair. There are the main channel and the subchannel between the radar truck and the command car. The echo data being compressed by the encoding board through the main channel are transferred to the decoding board. The decoded echo data are sent to display terminal. The communication is carried out through the subchannel. The radar truck transfers the beam attribute code such as the beam position, range, etc. information. The command car sends the command control code to the radar truck. The simple mode is used in the main channel with the transfer protocol as: tag+data length+beam data+check sum. The half-duplex mode is used in the subchannel with the transfer protocol as: condition code+data length+transmission data+check.

Description

technical field [0001] The radar transmission of the present invention particularly relates to a real-time compression and decompression transmission method for radar video data. Background technique [0002] As an over-the-horizon sensor, radar plays an important role in national defense, land and resource exploration, etc. In the development of radar technology, radar networking and data fusion technology have become the main development trend, and the problem of real-time transmission of radar data has become increasingly prominent. The traditional multi-cable transmission method has disadvantages such as complex connection, low reliability, poor anti-interference ability, and large transmission loss. [1][2] . Optical fiber transmission is high-speed, but in practical applications, there are problems such as requiring special tools for wiring, time-consuming and labor-intensive, and high cost. [3] . [0003] The following are relevant reference...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/02H04L29/06
Inventor 薛建儒郑南宁郑朝晖宁军
Owner XI AN JIAOTONG UNIV
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