A multipath error detection and elimination method for inter-satellite radio frequency relative measurement

A technology of multipath error and relative measurement, which is applied in the field of satellite measurement and control, and can solve problems such as the influence of satellite relative pose measurement accuracy

Active Publication Date: 2019-01-01
BEIHANG UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a multipath error detection and elimination method for inter-satellite radio frequency relative measurement to solve the problem that the multipath effect of measurement signals affects the measurement accuracy of satellite relative posture

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  • A multipath error detection and elimination method for inter-satellite radio frequency relative measurement
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  • A multipath error detection and elimination method for inter-satellite radio frequency relative measurement

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Embodiment Construction

[0110] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0111] like figure 1 Shown, the concrete implementation method of the present invention is as follows:

[0112] The first step is to establish a coordinate system. Assume that satellite A is fixed and satellite B is moving, and the body coordinate system of satellite A is used as the reference coordinate system. The body coordinate system takes the satellite's center of mass as the origin, and the X axis can be selected as the center of mass of the satellite. Pointing to the normal direction of the main working plane, the Y axis selects the normal direction from the center of mass to the other face of the cube according to the right-hand system, and the Z-axis direction can be determined according to the XY axis. Satellite A is in the positive direction of X-axis of satellite B, such as figure 2 As shown, the antennas of the radio frequency relativ...

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Abstract

The invention discloses a multi-path error detection and elimination method in allusion to inter-satellite radio frequency relative measurement, and belongs to the technical field of the satellite measurement and control technology. The method comprises the steps: building a coordinate system, and arranging a antenna composition measurement channel on a satellite to be measured; calculating the relative position and posture of the satellite to be measured by a calculating unit; while the assurance condition of the error detection is satisfied, performing the multi-path error detection; and while the error detection result shows that the multi-path error is existent, alarming, and then judging whether the error elimination assurance condition is satisfied, if the error elimination assurance condition is satisfied, performing the error elimination, detecting the measurement channel which generates the multi-path error, and removing the measurement channel which generates the error. The provided multi-path error detection and elimination method in allusion to the inter-satellite radio frequency relative measurement is capable of inhibiting the multi-path effect produced by the inter-satellite relative measurement, and performing the effective error detection while the calculation is performed, and completing the error detection without increasing the complexity.

Description

technical field [0001] The invention belongs to the technical field of satellite measurement and control, and in particular relates to a multipath error detection and elimination method in an inter-satellite radio frequency relative measurement system. Background technique [0002] In the satellite formation flight system, the radio frequency relative measurement provides a method for measuring the relative position and attitude of the satellites, especially in the deep space environment, where the GNSS signal is weak, and the optical measurement method is limited by the light conditions, and the radio frequency measurement method can be effective Overcome related problems and provide an effective measurement method for autonomous measurement of satellites. Therefore, relative radio frequency measurement has become a research hotspot at home and abroad. There are relatively many studies abroad, mainly in the United States and some countries in the European Union. A series of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02B64G1/36
CPCB64G1/36G01S5/021G01S5/0215G01S5/0247G01S5/0284
Inventor 刘荣科牟伟清
Owner BEIHANG UNIV
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