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The processing system of multi-channel channel detection based on vde

A channel detection and processing system technology, applied in the transmission system, phase-modulated carrier system, digital transmission system, etc., can solve the high performance and complexity requirements of the demodulation algorithm, long transmission distance of sea and air target signals, and sea and air target signal Low signal-to-noise ratio and other issues, to achieve the effect of improving comprehensive processing capabilities, reducing the number of back-end demodulators, and reducing processing delays

Active Publication Date: 2020-06-30
SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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Problems solved by technology

For space-borne receivers, due to the long transmission distance and large link loss of the sea-air target signal, the signal-to-noise ratio of the sea-air target signal received by the satellite is low, which requires high performance and complexity of the demodulation algorithm, resulting in the demodulation High resource usage

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  • The processing system of multi-channel channel detection based on vde
  • The processing system of multi-channel channel detection based on vde
  • The processing system of multi-channel channel detection based on vde

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Embodiment Construction

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] figure 1 It is a schematic framework diagram of a processing system based on VDE multi-channel channel detection according to an embodiment of the present invention; figure 2 It is a composition block diagram of an O&M symbol timing estimator according to an embodiment of the present invention; image 3 It is a block diagram of M-power phase detection according to an embodiment of the present invention; Figure 4 It is a waveform result diagram of a high-speed frequency-related FPGA online test according to an embodiment of the present invention.

[0026] Such as figure 1 As shown, the present invention provides a processing system based on VDE multi-channel channel detection, including: burst energy detection module, f...

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Abstract

The invention provides a VDE-based multi-channel channel detection processing system, including a burst energy detection module, a frame head combination storage module, a high-speed frequency correlation compensation module, an open-loop timing and phase detection module, and a bi-orthogonal decoding module. And judgment module, effective channel selection module, demodulator group module and combination package output module. The invention greatly reduces the number of receiving demodulators through the multi-channel VDE channel detection and processing system based on the VDE communication protocol mechanism, reduces the hardware pressure of the receiving system, and has very important significance and great significance for the multi-channel reception of VDE sea and air target signals. Broad application prospects.

Description

technical field [0001] The invention relates to a VDE-based multi-channel channel detection processing system. Background technique [0002] With the development of maritime communication technology, in order to solve the bottleneck of serious time slot conflict and low communication rate in the existing ship AIS communication system in some areas, the International Organization of Aids to Navigation (IALA) proposed the ship's VDE communication system, and in the VDE system The communication links between satellites and ships have been added to meet the different needs of offshore and far-sea ships, laying the foundation for complex and multi-functional maritime communication applications in the future. [0003] Based on the satellite ships in the VDE system, the ship communication in the area can be coordinated by means of time division, frequency division and code division multiple access to avoid message collisions in the cell. For space-borne receivers, due to the long ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04L27/00H04L27/22
CPCH04B7/18513H04L27/0014H04L27/22H04L2027/0026H04L2027/0046H04B7/18515H04B7/18517
Inventor 向前李惠媛罗小成姚崇斌叶曦周少骞
Owner SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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