Wind-band signal processing system and its method for acoustic Doppler ocean current profile instrument

A Doppler current and signal processing technology, applied in the field of broadband signal processing systems, can solve the problems of large variance and the thickness of the measurement layer should not be too small, and achieve the effects of high stability, improved spatial resolution, and improved measurement accuracy

Active Publication Date: 2005-03-02
杭州瑞利海洋装备有限公司
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Problems solved by technology

The disadvantage is that limited by the frequency and pulse width, the thickness of the measured layer cannot be too small, and the variance of a single measurement is large

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  • Wind-band signal processing system and its method for acoustic Doppler ocean current profile instrument
  • Wind-band signal processing system and its method for acoustic Doppler ocean current profile instrument
  • Wind-band signal processing system and its method for acoustic Doppler ocean current profile instrument

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0017] exist figure 1 , the angle between the four beams and the vertical line is θ, forming an oblique orthogonal structure; figure 2 It is a schematic diagram of PAADCP-01 system composition; the signal processing main board + data acquisition card is inserted in the computer system chassis of PAADCP-01, and the signal of PAADCP-01 electronic equipment components is directly connected with the signal processing main board + data acquisition card.

[0018] The broadband signal processing system of this acoustic Doppler ocean current profiler, this system mainly comprises acoustic Doppler ocean current profiler assembly, signal processing motherboard+data acquisition card, computer system, cable; Described acoustic Doppler ocean current profile The instrument assembly is connected to the computer system through the signal processing main board+data acquisit...

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Abstract

The invention relates to a wide-band signal processing system and method for acoustic Doppler current section apparatus, including an acoustic Doppler current section apparatus module, a signal processing mainboard plus a data collecting card, a computer system and cables, where the acoustic Doppler current section apparatus module inputs the received wide-band analog sound signal into the data collecting card by the cables, the data collecting card collects the analog sound signal and directly sends the collected data to the signal processing mainboard for processing, and the computer system operates the whole course and displays the results by pictures. Its advantages: for increasing the accuracy and space resolution of ocean current measurement, it adopts m-sequence code wide-band pulse signals and adopts multiple relative signal processing technique to extract two or many phase differences of same m-sequence code wide-band pulse signals and thus obtaining the moving speed of the apparatus relative to the sea water or seabed, and it has high stability for long working and is not limited by frequency and pulse width.

Description

technical field [0001] The invention relates to a broadband signal processing system of an acoustic Doppler ocean current profiler, mainly a broadband signal processing system and a method for an acoustic Doppler ocean current profiler, which is used for an acoustic Doppler ocean current profiler and a log Signal processing of marine instruments such as instrumentation and extraction of velocity information of instruments relative to seawater or seabed. Background technique [0002] The research and development of acoustic Doppler current profiler signal processing technology can be divided into several stages. At first, the phase-locked frequency tracker was used as the core to detect the frequency of seawater or seabed echo signals, and its representative products are the CI-30 type of Furuno Company in Japan. Its disadvantages are that the volume of the equipment is large, and the spatial resolution and accuracy of flow measurement are low...

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Application Information

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IPC IPC(8): G01S7/52G01S7/53G01S15/58
Inventor 沈斌坚丛卫华付菊英胡益群夏明宗桂华章灵祥张国栋程千流
Owner 杭州瑞利海洋装备有限公司
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