Telemetry frequency hopping communication method based on two-dimensional frequency hopping graph

A technology of frequency hopping communication and frequency hopping graph, which is applied in the field of telemetry communication, can solve the problems that the one-dimensional frequency hopping synchronization code cannot establish synchronization correctly, the receiving end cannot perform synchronization after dehopping, and the signal cannot be demodulated, etc., so as to achieve high usage and promotion value, improve the signal anti-interference ability, and enhance the effect of anti-interference ability

Inactive Publication Date: 2019-09-20
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, due to the strong clutter interference in aviation communication and the low signal-to-noise ratio in aerospace communication, the one-dimensional frequency hopping synchronization code cannot establish synchronizatio

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  • Telemetry frequency hopping communication method based on two-dimensional frequency hopping graph
  • Telemetry frequency hopping communication method based on two-dimensional frequency hopping graph
  • Telemetry frequency hopping communication method based on two-dimensional frequency hopping graph

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Examples of the embodiments are shown in the accompanying drawings, and the specific embodiments described in the following embodiments of the present invention are only illustrative illustrations of specific embodiments of the present invention, and are intended to explain the present invention, rather than constituting a limitation of the invention.

[0029] A telemetry frequency hopping communication method based on a two-dimensional frequency hopping graph, assuming that there are N sensors to collect measurement parameters, such as figure 1 shown, combined with figure 2 , including the following steps:

[0030] Step S1, encoding. Each sensor senses the measured parameter, encodes the initial information or original information of the measured parameter, and converts it into a digital baseband signal, thereby obtaining multiple ...

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Abstract

The invention provides a telemetry frequency hopping communication method based on a two-dimensional frequency hopping graph. The telemetry frequency hopping communication method comprises the steps of coding, frequency hopping, modulation, signal sending, signal receiving, demodulation and decoding. According to the invention, the frequency hopping graph is combined with the telemetry system, and the good autocorrelation and cross-correlation of the two-dimensional frequency hopping graph are mainly utilized, so that the signal can be accurately recovered, the synchronization accuracy of the signal is improved, the communication quality is improved, and the reliability of the communication system is ensured.

Description

technical field [0001] The invention belongs to the field of telemetry communication, and in particular relates to a telemetry frequency hopping communication method based on a two-dimensional frequency hopping graph. Background technique [0002] In recent years, with the rapid development of the communication industry, all walks of life have higher and higher requirements for the accuracy of information sending and receiving. Because synchronization technology will directly affect the stability and effectiveness of the entire communication system, synchronization technology will be used in future communication plays a vital role in the system. [0003] In the traditional frequency hopping technology, one-dimensional frequency hopping codes are usually used to modulate the carrier to achieve the purpose of frequency spreading. In the current aviation and aerospace telemetry communication, in order to recover the signal accurately, a one-dimensional pseudo-random sequence i...

Claims

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Application Information

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IPC IPC(8): H04B1/713H04B1/715
CPCH04B1/713H04B1/715
Inventor 李彤辉姚建国熊点王晨
Owner NANJING UNIV OF POSTS & TELECOMM
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