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Marine radar radio frequency cable transmission loss automatic compensation apparatus and compensation method thereof

A technology of radio frequency cable and transmission loss is applied in the field of automatic compensation device for transmission loss of marine radar radio frequency cable, which can solve the problems of long adjustment time, low efficiency and complicated operation, and achieve the effect of short adjustment time, high efficiency, simple and reliable operation

Active Publication Date: 2016-04-20
上海圆舟电子科技有限公司
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AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is to provide a marine radar radio frequency cable transmission method for the problems of complex operation, time-consuming adjustment, low efficiency, and the need for patented personnel in the existing method of manually setting the gain. Automatic loss compensation device

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  • Marine radar radio frequency cable transmission loss automatic compensation apparatus and compensation method thereof
  • Marine radar radio frequency cable transmission loss automatic compensation apparatus and compensation method thereof

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Embodiment Construction

[0042] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0043] see figure 1 , shown in the figure is an automatic compensation device for marine radar radio frequency cable transmission loss, including a test signal source 100, a selection switch 200, a variable gain amplifier 300, an analog-to-digital converter 400, an FPGA digital processing unit 500 and a main controller MCU600.

[0044] The selector switch 200 has input terminals 210, 220 and an output terminal 230. The input terminals 210, 220 of the selector switch 200 are respectively connected to the echo signal output terminal 710 of the radar receiver 700 and the output terminal 110 of the test signal source 100.

[0045] The variable gain amplifier 300 has an amplified signal input end 310 and an amplified signal output end 320. The ampli...

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Abstract

The invention discloses a marine radar radio frequency cable transmission loss automatic compensation apparatus. The apparatus comprises a test signal source; a selection switch whose first input end and second input end are respectively connected with the output end of a radar receiver and the output end of the test signal source; a variable gain amplifier which has an input end connected with the output end of the selection switch and an output end connected with one end of a connection cable; an analog-to-digital converter whose input end is connected with the other end of the connection cable; an FPGA digital processing unit whose input end is connected with the output end of the analog-to-digital converter; and a main controller MCU which is respectively connected with the FPGA digital processing unit, the selection switch and the variable gain amplifier. The invention further discloses a compensation method of the compensation apparatus. According to the invention, by full use of the original signal processing process of a system, the transmission loss of a marine radar cable is automatically compensated.

Description

technical field [0001] The invention relates to the technical field of radio frequency cable transmission for marine radar, in particular to an automatic compensation device for transmission loss of radio frequency cable for marine radar and a compensation method thereof. Background technique [0002] Existing marine radars are generally so-called "two-unit" radars, that is, the outdoor antenna and transceiver form the radar head unit, and the indoor host, display and console form the display and control unit. The two units are connected by a combination cable, and the radio frequency cable transmits the intermediate frequency or baseband echo signal from the receiver to the host, which is processed and displayed by the host. [0003] The radio frequency cable will attenuate the received echo signal, thus affecting the radar range and target detection, especially the display of weak target echo. In addition, the system loss will affect the operating range. At the same time,...

Claims

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Application Information

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IPC IPC(8): G01S7/34G01S7/35G01S13/93
CPCG01S7/34G01S7/352G01S13/937
Inventor 褚人乾
Owner 上海圆舟电子科技有限公司
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