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A multi-beam wireless test method for communication satellites

A technology for wireless testing and communication satellites, which is applied in the field of multi-beam wireless testing of communication satellites, can solve problems such as not being able to meet the needs of communication satellite wireless testing engineering, achieve the effects of solving phase drift problems, ensuring versatility, and improving scanning accuracy

Active Publication Date: 2020-07-14
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

However, due to the increasing aperture of the multi-beam feed array, the test distance required to meet the far-field conditions of the measurement may even reach several kilometers, which cannot meet the engineering needs of communication satellite wireless testing

Method used

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  • A multi-beam wireless test method for communication satellites
  • A multi-beam wireless test method for communication satellites
  • A multi-beam wireless test method for communication satellites

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Embodiment Construction

[0026] The flow chart of the inventive method is as figure 1 As shown, before the implementation process of the present invention is described in detail, it should be noted that in the planar near-field test system, the input and output signals of the system are required to be radio frequency signals of the same frequency, and the amplitude-phase receiver receives the test signal of the same frequency Signal B and reference signal A, correct the amplitude and phase drift of the signal source through B / A. Among them, for the satellite, the test signal of the forward link of the payload transponder is a C-band signal, that is, the input is a C-band signal, and the reference signal is an S-band signal, that is, the output is an S-band signal; the test signal of the return link is tested The input is an S-band signal, and the output is a C-band signal. Therefore, since the signals sent and received by the multi-beam feed array are non-same-frequency signals, in order to complete ...

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Abstract

The invention discloses a communication satellite multi-beam wireless test method and belongs to the field of communication satellite testing. The specific method comprises the following steps: (1), adjusting the frequency of a test signal in the near field of a multi-beam feed array and the frequency of a reference signal to be the same frequency; (2), obtaining an electric filed at a preset scanning position point by making an amplitude and phase comparison between the test signal which is obtained in the step (1) and has the same frequency as the reference signal and the reference signal; (3), performing verification correction on the electric field obtained in the step (2) at the preset scanning position point ; (4), obtaining feed array far-field distribution data by performing Fourier transformation on the electric field at the preset scanning position point after the correction; and (5), obtaining a multi-beam wireless test result according to a multi-beam feed array reflector model and the feed array far-field distribution data.

Description

technical field [0001] The invention belongs to the technical field of communication satellite testing and relates to a multi-beam wireless testing method for communication satellites. Background technique [0002] The traditional communication satellite wireless test adopts the compact field and the outer field far-field test. However, with the use of communication satellite multi-beam load technology, since multi-beam technology mostly uses large-scale expandable reflector antennas, it is limited by the size of the quiet zone in the compact field. This type of antenna does not meet the conditions for the antenna compact field test. Moreover, if a communication satellite using multi-beam payload technology is used for field testing, it is necessary to design a special satellite tooling, which is complex in design and high in cost. [0003] At present, in view of the problems existing in the above-mentioned traditional test methods, two measurement methods, far-field measur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04B17/00H04B7/185
CPCH04B7/1851H04B17/00H04W24/08
Inventor 雷继兆李殷乔孙治国张鸿鹏徐东宇陈明章边炳秀
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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