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Radar apparatus

A technology for radar devices and stable areas, applied in measuring devices, instruments, using re-radiation, etc., can solve problems such as unstable detection

Active Publication Date: 2017-03-29
FURUNO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In Patent Document 2, the presence or absence of echoes is detected for each pixel of the image memory, and the instability is detected for each pixel based on the number of changes in the presence or absence of echoes over a plurality of scans in the past

Method used

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Embodiment Construction

[0042] Next, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a block diagram showing the main configuration of the marine radar device 100 according to the present embodiment.

[0043] The radar antenna 1 included in the radar device 100 of the present embodiment can transmit a pulsed transmission wave such as a microwave generated by a magnetron, and can receive a reflected wave of the transmission wave as a reception signal. In addition, the transmission wave emitted by the radar device 100 is not limited to a pulse shape, and may be a continuous wave. In addition, the emission wave may be generated not by a non-magnetron but by a semiconductor element or the like. In addition, the radar antenna 1 repeatedly transmits and receives transmitted waves while rotating in a horizontal plane at a predetermined rotation cycle. In addition, instead of the radar device 100 of this embodiment, a radar device having a configuration...

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Abstract

A radar apparatus (100) for detecting around a ship is provided. The apparatus (100) includes an unstable area detecting module (10) configured to observe a variation in a signal level corresponding to detection data over a plurality of scans, obtain unstableness of the observed detection data, and detect unstable areas (41, 42, 43, 44, 410, 420, 430, 440) based on the unstableness, a determining module (22) configured to measure a size of each of the areas and determine the area as a small target object area (41, 43) when the size of the area is below a given threshold, a processing module (6) configured to process the detection data corresponding to the small target object area (41, 43) to be emphasized when displayed, than the detection data corresponding to the other unstable area (42, 44), and a display unit (8) configured to display the processing result.

Description

technical field [0001] The present invention mainly relates to a radar device that suppresses and displays unwanted echoes. Background technique [0002] Conventionally, scan correlation processing is known in which radar images are created by adjusting levels through statistical processing based on echoes acquired at present and in the past. By performing scan correlation processing, it is possible to suppress echoes reflected by the sea surface, but on the other hand, it is also possible to suppress echoes from ships moving at high speed. Therefore, it is preferable to perform scan-related processing with appropriate processing content for each processing object. [0003] Patent Document 1 discloses a technique of dividing an area into two, an inner area and an outer area, and making the processing contents of scan-related processing different between the two. Specifically, since sea surface reflection often occurs at a short distance, scan correlation processing is perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/12G01S13/937
CPCG01S7/12G01S7/2923G01S7/414G01S13/426G01S13/937G01S7/24G01S13/5244
Inventor 富士川巧久保田有吾
Owner FURUNO ELECTRIC CO LTD