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Multi-channel self-adaptation frequency-hopping processing method and system suitable for aeronautical ad-hoc network

A technology of aeronautical ad hoc network and processing method, which is applied in the field of realizing adaptive frequency hopping processing of shared channel of aeronautical wireless ad hoc network, can solve frequency collision and other problems, and achieve the effect of ensuring orthogonality and anti-jamming performance

Active Publication Date: 2015-01-07
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

[0006] In order to solve the problem of frequency collision between network nodes in the frequency hopping system of aviation wireless networking and improve the utilization rate of the shared channel of the entire network, the purpose of the invention is to provide a multi-channel adaptive frequency hopping processing method suitable for aeronautical ad hoc networks. Perceptual processing and adaptive frequency allocation protocol design to improve network reliability

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  • Multi-channel self-adaptation frequency-hopping processing method and system suitable for aeronautical ad-hoc network
  • Multi-channel self-adaptation frequency-hopping processing method and system suitable for aeronautical ad-hoc network

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0047] A kind of implementation scheme process that is applicable to aeronautical ad hoc network multi-channel self-adaptive frequency hopping processing method of the present invention is as follows (according to figure 1 ):

[0048] 1) Firstly, the intermediate frequency analog data data_in is sampled and mixed to each frequency point as the center frequency window to obtain parallel demodulation data input parallel_demodule_input.

[0049] 2) After the input data parallel_demodule_input is mixed with local frequency points in parallel and matched filtered, the sliding window recursive mode is used to estimate the signal power, and at the same time, it is correlated with the local synchronization sequence. If the power estimation result gain_para is higher than the signal strength threshold, and there is no peak in the synchronization correlation detection, it ind...

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Abstract

The invention discloses a multi-channel self-adaptation frequency-hopping processing method suitable for an aeronautical ad-hoc network. The method comprises the steps of (1) evaluating all frequency points; (2) dividing a frequency-hopping full band into m physical channels, and initially allocating n frequency points to each physical channel to form frequency sets; (3) selecting frequency points with the lowest power in other physical channels to replace interfered frequency points in the selected physical channel; (4) dynamically selecting the current idlest physical channel according to the idleness degree of the current physical channels when information to be sent of a node MAC layer is sent; (5) carrying out modulation and frequency-hopping transmission on framed data through the selected physical channels. The invention further discloses a multi-channel self-adaptation frequency-hopping processing system suitable for the aeronautical ad-hoc network. The system comprises a spectrum sensing module, a self-adaptation frequency point allocating module and channel idleness degree statistics module. According to the multi-channel self-adaptation frequency-hopping processing method and system suitable for the aeronautical ad-hoc network, the network reliability is improved through spectrum sensing processing and design of self-adaptation frequency point allocation protocols.

Description

technical field [0001] The invention belongs to the wireless ad hoc network technology of avionics information, and is a method and system for realizing adaptive frequency hopping processing of a shared channel of an aeronautical wireless ad hoc network, which is applied to the field of aeronautical wireless data link networking. technical background [0002] As the future development direction of aviation collaborative data link, Aeronautical Ad Hoc Network (AANET) creatively applies mobile ad hoc network to aviation aircraft, so that it can distribute ground command information and air perception information to each other. The frequency hopping communication technology is an important anti-jamming technology. Applying the frequency hopping technology to the aeronautical self-organizing network will not only ensure that the nodes in the network fully share the channel bandwidth, but also improve the system's anti-jamming capability. [0003] In the aviation wireless data li...

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Application Information

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IPC IPC(8): H04B1/715
Inventor 仇启明方正丁勇飞彭文攀靳超殷晓晨
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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