Digitizing method of weather facsimile signals

A meteorological fax and signal technology, applied in image communication, electrical components, etc., can solve the problems that cannot be stored, can only be processed in real time, etc.

Inactive Publication Date: 2009-11-04
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Because it is an analog signal, it can only be processed in real time and cannot be stored

Method used

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  • Digitizing method of weather facsimile signals
  • Digitizing method of weather facsimile signals

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Embodiment Construction

[0023] 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.

[0024] At present, the meteorological information received by ships while sailing at sea mainly comes from short-wave weather fax machines, which receive short-wave signals issued by various meteorological stations and print them out on thermal fax paper as a reference for ship navigation. Because it is an analog signal, it can only be processed in real time and cannot be stored. The present invention is aimed at such problem, and provides a kind of method that can digitize the weather facsimile signal that receives, and store; The implementation of this method is as follows: figure 1 shown.

[0025] The analog signal format of weather facsimile is as follows: figure 2 As shown, its analog signal acquisition and processing device performs ana...

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Abstract

The invention discloses a digitizing method of weather facsimile signals. The method mainly comprises the following steps: (1), converting analog signals into digital signals and transmitting the digital signals to an upper computer; (2), firstly, searching an image head corresponding to the received digital signals; (3), finding a row head of a corresponding image and continuously receiving corresponding image signals; (4), judging whether the whole signal receiving is finished or not, going to the step (5) if finishing the signal receiving and ending the whole receiving process and returning to the step (3) if not finishing the signal receiving; and (5), forming an image file according to the received image signals. The invention converts and stores the weather analog signals into the digital signals as a BMP file so as to be beneficial to the weather analysis of the whole course and provide data support for course construction.

Description

Technical field: [0001] The invention relates to a digital signal processing solution, in particular to a method for digitizing received meteorological facsimile signals. Background technique: [0002] With the rapid growth of the global economy and the acceleration of the economic integration process, the volume of maritime transportation has increased rapidly. According to statistics, 90% of the world's trade in goods is completed by sea transportation. The increasingly busy maritime traffic and maritime life, property, and environment Influenced by factors such as these, the maritime transportation is being developed towards automation, informatization and safety. Meteorological information is one of the important information for safe navigation at sea. At present, the meteorological information received by ships at sea mainly comes from short-wave weather fax machines. It accepts short-wave signals issued by various meteorological stations and prints them out on thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00H04N1/32H04N1/40
Inventor 胡文骅许开宇林鑫伟徐志京施朝健
Owner SHANGHAI MARITIME UNIVERSITY
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