Method and system for estimating field intensity of equipment-on-satellite-surface of communication satellite

Abstract

The invention provides a method and system for estimating the field intensity of equipment-on-satellite-surface of a communication satellite. The method comprises the following steps: (1) establishinga transmitting antenna-channel identification matrix; (2) performing push saturation operations one by one; (3) determining values of elements in the transmitting antenna-channel identification matrix, push saturation power, and field intensity probe reading corresponding to a push saturation channel; (4) calculating conversion factors; (5) determining the minimum and maximum conversion factors;(6) calculating minimum and maximum field intensity values during push saturation of all channels of a repeater corresponding to each transmitting antenna; and (7) estimating the minimum and maximum field intensity values at the equipment-on-satellite-surface during the push saturation of all channels corresponding to all antennas. By adoption of the method and system provided by the invention, the problem that actual data cannot be directly obtained by a test is solved, and the problems of low accuracy, low efficiency and high cost resulting from the complete dependence on a simulation resultand the deviation from the test data are also solved.

Description

technical field [0001] The invention relates to a method and system for estimating field strength of communication satellite catalog equipment, belonging to the field of satellite technology. Background technique [0002] Communication satellites often have multiple transponders, and the self-compatibility of satellites includes the compatibility between star catalog sensitive equipment and transponders. Therefore, when all the transponders of the satellite are pushed to saturation, the field strength at the star table equipment should be compared with its sensitivity threshold, so as to judge the compatibility between the sensitive equipment and the transponder. However, in order to reduce potential damage to spaceborne equipment and ground test equipment, during the satellite self-compatibility test, the transponder cannot saturate all channels, but only some channels can be saturated according to the analysis results. Therefore, it is necessary to estimate the field stre...

AI Technical Summary

Problems solved by technology

[0003] The existing field strength estimation method is to use electromagnetic simulation to calculate the field strength at the star catalog equipment. The accuracy of this method depends to a large extent on the input data such as the satellite structure model, antenna model and antenna electrical parameters, as well as the satellite There are many factors such as the simplification method of the model and the selected electromagnetic calculation method. If any factor is insufficient, there will be a large deviation between the simulation result and the test result.

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