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A wireless test method of relay data transmission system in the whole satellite near field

A wireless testing and data transmission antenna technology, applied in transmission systems, radio transmission systems, antennas, etc., can solve the problems of narrow relay data transmission antenna beams and cannot meet the test requirements, and achieves simple operation, easy implementation and wide application prospects. Effect

Active Publication Date: 2021-12-07
AEROSPACE DONGFANGHONG SATELLITE
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Problems solved by technology

[0003] However, the relay data transmission antenna of the relay data transmission system has a narrow beam width of only 1 degree or even narrower. In order to meet the far-field conditions of the measurement, the test distance must even reach several kilometers, which cannot meet the requirements of the entire satellite in the factory building. Engineering needs for testing over the air

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  • A wireless test method of relay data transmission system in the whole satellite near field

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Embodiment Construction

[0018] The present invention will be further described in detail through the drawings and examples below. Through these descriptions, the features and advantages of the present invention will become more apparent.

[0019] Such as figure 1 As shown, the present invention provides a wireless test method of a relay data transmission system in the near field of the entire satellite, the relay data transmission antenna of the relay data transmission system is a Cassegrain antenna, and the test method includes the following steps:

[0020] Step 1. Set up the satellite and ground test antennas at a set distance in the near-field of the plane. The secondary reflection feed of the satellite relay data transmission antenna faces the horizontal direction; the ground test antenna includes two ground transmitting The receiving antenna, the erection height of the ground test antenna is the same as the height of the secondary reflection feed source of the relay data transmission antenna fr...

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Abstract

The invention provides a wireless test method of a relay data transmission system in the near field of the whole satellite, comprising the following steps: setting up satellite and ground test antennas in the plane near field; The reflector is installed at the center of the back; the laser transmitter is installed horizontally under the ground test antenna; when the forward wireless test is performed, the ground transmitting antenna is directed towards the relay data transmission antenna; the forward direction is performed according to the AGC value of the receiver on the satellite. The loss budget of the link; during the return wireless test, the loss budget of the return link is made according to the level of the received signal on the ground. The invention has the advantages of high precision of wireless test data, reasonable method, feasible operation, easy engineering realization and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of spacecraft testing, and relates to a wireless testing method of a relay data transmission system in the near field of a whole satellite. Background technique [0002] In recent years, with the continuous development of my country's aerospace technology, the relay data transmission system has assumed an increasingly important role in satellite payload data transmission in aerospace application systems. Compared with the traditional ground data transmission system, the relay data transmission system has the advantages of all-day, all-weather, and strong real-time transmission because it is not restricted by domestic ground stations. It is more and more used in aerospace projects such as satellites. [0003] However, the relay data transmission antenna of the relay data transmission system has a narrow beam width of only 1 degree or even narrower. In order to meet the far-field conditions of the measurement,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/10H04B17/20H04B7/185H01Q3/02
CPCH01Q3/02H04B7/1851H04B17/102H04B17/20
Inventor 何钐王淦严林谭维凤尹亮
Owner AEROSPACE DONGFANGHONG SATELLITE
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