Embedded-type fixed-and-floating-point multi-beam depth-sounding sonar signal acquisition and processing platform

Abstract

The present invention relates to an embedded-type fixed-and-floating-point multi-beam depth-sounding sonar signal acquisition and processing platform. The platform is composed of a logic control system, an embedded algorithm processing system A, an embedded algorithm processing system B, an impedance matching circuit, a signal conditioning and acquisition circuit, a CPCI data transmission circuit, a control parameter transmission circuit, a system simulation power and a system digital power. With adoption of the platform provided by the present invention, space in a machine case is saved, noise interferences caused by inter-board signal transmission are also restrained, and great conveniences are brought for updating and optimization of a multi-wave system.

Description

technical field [0001] The invention relates to an embedded fixed-floating-point multi-beam sounding sonar signal acquisition and processing platform. Background technique [0002] Multi-beam detection technology is one of the most widely applicable seabed topography and geomorphology detection technologies recognized internationally in recent years. Terrain, observation of underwater structures, etc., have achieved a wide range of applications. At present, the theory of underwater acoustic signal processing has gradually formed a relatively mature system. With the rapid development of various algorithms, higher requirements are put forward for the signal processing system. The new multi-beam sounding algorithm requires a large number of fixed-point and floating-point mixed operations, which also puts forward new requirements for the signal processing board. Higher processing speed, faster interface transmission and embedded design methods are all research hotspots at this...

AI Technical Summary

Problems solved by technology

The new multi-beam bathymetric sonar requires low power consumption, high efficiency, miniaturization, and embedding for the signal processing system, but the existing commercial processing systems on the market cannot meet the requirements well, especially the existing commercial The signal acquisition board has fewer acquisition channels and lower precision, which cannot meet the acquisition requirements of dozens or even hundreds of analog signals of the multi-beam bathymetry system

Moreover, the existing commercial signal processing boards use a single processor structure, which cannot well adapt to the complex fixed-floating-point mixed operations in the multi-beam bathymetry algorithm, which greatly limits the efficiency of the algorithm.

[0003] Most of the existing multi-beam sounding systems adopt the form that the signal acquisition board and the signal processing board are separated, and the multi-chip processors are arranged on one circuit board. The processors in this circuit form cannot be debugged separately. And once a certain processor fails, it needs to face the overall debugging and maintenance of the signal processing system, which also increases the difficulty of system maintenance

With the continuous emergence of new processors, the signal acquisition and processing system of multi-beam sounding sonar is also facing continuous upgrades. At this time, the shortcomings of the above-mentioned circuit structure will be exposed. Using a new processor will require redrawing the entire circuit board, which also increases the development cost of system upgrades and hinders the further improvement of multi-beam sounding technology

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