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Passive sonar broadband warning long-course display method and device

A display method and broadband technology, applied in the direction of measuring devices, re-radiation of sound waves, input/output process of data processing, etc., can solve problems such as irrecoverable, information loss, etc., achieve convenient and accurate positioning, improve time span, and facilitate precision The effect of positioning display

Active Publication Date: 2022-05-06
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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Problems solved by technology

However, there are disadvantages in the extraction and down-sampling processing method: for the extraction and down-sampling processing of the broadband energy detection results, most of the passive broadband warning data are sampled at a ratio of 5:1 or above. Data, because the pulse width of this type of data is usually less than 1s, it is easy to cause information loss when processing by sampling, and it cannot be recovered later

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  • Passive sonar broadband warning long-course display method and device
  • Passive sonar broadband warning long-course display method and device
  • Passive sonar broadband warning long-course display method and device

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Embodiment Construction

[0049] In order to make the technical means of the present invention and the technical effects that can be achieved more clearly and more perfectly disclosed, the following embodiments are provided hereby, and the following detailed descriptions are made in conjunction with the accompanying drawings:

[0050] see figure 1 , the flow chart of the display method of the passive sonar broadband warning long history of the present embodiment; the display method of the passive sonar broadband warning long history of the present embodiment specifically includes the following steps:

[0051] (1) First build three buffer display pre-stored objects, which are used to store the display data object IMAGE (width W1, height H1), the first background buffer data object IMAGEBUF (width W2, height H2) and the second background buffer data object IMAGEBUF_X (width W3, height H3), wherein the height of IMAGEBUF_X is 5 times of the height of IMAGEBUF, that is, H3=5H2, and each buffer shows that t...

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Abstract

The invention relates to a passive sonar broadband warning long-course display method and device, and belongs to the technical field of passive sonar. The method comprises the following steps: constructing graphic elements including a long-course chart, an azimuth scale ruler, a time scale ruler and a longitudinal scroll bar, setting a movable sliding block on the longitudinal scroll bar, associating the movable sliding block with background cache data processing, receiving detection result data, processing background cache data, displaying the long-course chart, displaying the azimuth scale ruler, displaying character information and displaying the time scale ruler. According to the method, a mode of separating display data from background cache data is adopted, background double caches are adopted, and meanwhile, the time span of a passive process is improved through a time information synchronous storage and data compression display method, so that long-process display is realized, and an azimuth process graph with a high time gain effect can be obtained.

Description

technical field [0001] The invention relates to the technical field of passive sonar, in particular to a method for displaying a long history of passive sonar broadband alerts. Background technique [0002] Passive sonar uses passive monitoring as the main method to carry out omnidirectional and full-time warning. Its working process is that the hydrophone receives signals such as radiated noise from the marine environment or targets. After the broadband energy detection module of signal processing, it will get The passive broadband warning energy detection data is sent to the display module for display. The display method usually adopts the azimuth time history graph. The horizontal axis of the graph represents the beam, which is used to indicate the azimuth or sheer angle of the beam. Signal energy strength. [0003] When passive sonar is used for alert detection, it is subject to the comprehensive effect of interference superposition of factors such as the ocean environm...

Claims

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Application Information

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IPC IPC(8): G06F3/04812G06F3/04855H04L67/568H04L69/04G01S15/89
CPCG06F3/04812G01S15/89G06F3/04855H04L69/04
Inventor 杜栓平潘以晖
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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