Simulator for multi-channel meteor trail channel

A meteor trail and channel simulation technology, applied in the field of communication, can solve the problems that the attenuation rate and mode cannot be accurately controlled, and it is difficult to realize random channel bursts, etc., so as to shorten joint testing and testing work, improve research and development efficiency, and have stable and reliable performance Effect

Active Publication Date: 2009-01-21
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

During the development and testing of meteor trail communication equipment, the manually adjustable attenuator can roughly simulate the attenuation of the signal amplitude of a single channel, but cannot precisely control the attenuation rate and mode; It is also difficult for the device to realize the function of channel random burst

Method used

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  • Simulator for multi-channel meteor trail channel
  • Simulator for multi-channel meteor trail channel

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Embodiment Construction

[0016] refer to Figure 1 to Figure 2 , the present invention consists of front-end matching attenuation unit groups 1-1 to 1-4, digitally controlled attenuator groups 4-1 to 4-16, two-way output power distribution / combiner groups 2-1 to 2-2, eight-way output power distribution / Synthesizer group 3-1 to 3-2, back-end matching attenuation unit group 5-1 to 5-16, control unit 6, interface unit 7, channel simulation unit 8, power supply 9 and other components. figure 1 It is an electric principle block diagram of the present invention, and the embodiment is according to figure 1Connect the lines. The function of the front-end matching attenuation unit groups 1-1 to 1-4 is to complete the matching function of the front-end radio frequency input and output signals. The function of the two-way output power distribution / combiner groups 2-1, 2-2 is to make the front-end input and output port signals have a certain degree of isolation, and to make the input signals from the eight-way...

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Abstract

The present invention discloses a multi-channel meteor trail channel simulator, and relates to the transmission environment simulation equipment of meteor trail burst communication channel in the field of communication. The channel simulator comprises a digital control attenuator, a power distribution / synthesis device, a channel simulation unit, a power supply and other components. When in use, the channel simulator is connected in the meteor trail communication channel in series, to simulate the characteristics of the actual meteor trail channel, which comprise the appearance of random burst and the signal intensity of exponential decay; and the channel simulator can be used for simulation testing of various technical indicators of the meteor trail communication channel. The channel simulator also has the advantages of high degree of integration, simple circuit, small size, convenient use, stable and reliable performance, and so on, and is in particular suitable for the meteor trail channel simulator on the occasions of the joint testing of the system, the transmission threshold testing of the equipment, the capacity testing of the network protocol, and so on in the meteor trail communication system network under the condition of the laboratory.

Description

technical field [0001] The invention relates to a multi-channel meteor trail channel simulator in the field of communication, and is especially suitable for the joint test of the meteor trail communication system network in the laboratory state, the equipment transmission threshold test, the network protocol capability test and other occasions. Meteor trail channel simulator device. Background technique [0002] Meteor trail burst communication is a radio communication method that utilizes the reflection or scattering of VHF radio waves by the ionization trail formed by meteors entering the atmosphere at high speed and burning. Meteor trails are divided into under-dense trails and over-dense trails according to their electron linear density. The reflection characteristics of these two types of trails to electromagnetic waves are also different, and the reflection signal of the under-dense trail reaches a peak value quickly, and then decays exponentially; The over-dense afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04L12/26H04B17/391
Inventor 王伟赵彦惠张靖张永涛
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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