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Marine navigation radar

A navigation radar and marine technology, which is applied to the marine navigation radar to determine the target azimuth and distance system field, can solve the problems of the echo bright spot on the display screen changing from bright to dark, and it is inconvenient to observe, and achieves high reliability. , the picture is stable, the effect is convenient to choose and use

Inactive Publication Date: 2008-02-27
汕尾市快捷通导设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Through the analysis of its overall scheme, it is known that this patent application does not solve the defect that the echo highlights on the display screen alternate from bright to dark, causing inconvenience in observation

Method used

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0024] As shown in Figure 1, the transmitter 50 is triggered by the transmission trigger pulse relatively synchronous with the azimuth code pulse (2048 / 4096 per rotation of the antenna), modulated by the FET switch, forms a high-voltage pulse through the pulse transformer, and excites the magnetron oscillator, thereby forming pulses of radio frequency power. The radio frequency power is transmitted to the antenna through the three-terminal circulator and the azimuth joint, and through the action of the antenna, the radio frequency pulse power radiates electromagnetic waves to the space in a certain beam angle range.

[0025] The high-frequency electromagnetic wave of directional radiation encounters a target or obstacle 60 on the advancing direction, and then a part of the electromagnetic wave is reflected back along the original pat...

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Abstract

The invention relates to a marine navigation radar, which comprises a transmitter (50)and a receiver(70), especially comprises a signal process and display system(100), wherein, interface circuit in said signal process and display system connects receiver and microprocessor main circuit, and output television video signal lines R, G, B of said microprocessor main circuit are connected to scanning display circuit(160), besides, the said microprocessor main circuit(110) is also connected to operating circuit with instruction input keyboard(130).

Description

technical field [0001] The invention relates to a system for measuring the existence of a target by radio wave reflection, in particular to a system for determining the azimuth and distance of the target, and in particular to a marine navigation radar. Background technique [0002] Marine navigation radar is mainly used to find and measure the azimuth and distance of surrounding targets, and correctly display the coordinates of coastlines, navigation marks, other navigation ships or other markers relative to the radar, so that the ship can take the correct navigation attitude. [0003] The prior art has microwave signal transmission and reception, but since the display of the image is realized by the afterglow of the echo bright spot, it is inevitable that the echo bright spot always alternates from bright to dark with the scanning of the antenna, which makes observation inconvenient. For example, the Chinese patent application with the application number 02800268 discloses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/04G01S13/06G01S13/93
Inventor 黄冠南陈启明许振辉苏瑞威
Owner 汕尾市快捷通导设备有限公司
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