Method for Determination of Synchronization Deviation of Spacecraft-Earth Data for On-orbit Pointing Calibration of Spacecraft Antenna
A technology of data synchronization and synchronization deviation, applied in the field of aerospace measurement and control, can solve problems such as poor reliability, inability to evaluate accuracy, and traditional methods rely on prior information, and achieve the effect of strong adaptability and good robustness
Active Publication Date: 2021-12-24
NO 63921 UNIT OF PLA
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Based on this, an embodiment of the present invention provides a method for determining the synchronization deviation of spacecraft antenna on-orbit data synchronization to solve the problems of traditional methods relying on prior information, poor reliability, and inability to evaluate accuracy.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0069] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details.
[0070] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0071] The device-ground data synchronization method of this embodiment is mainly used to obtain high-precision device-ground data synchronization deviation in the on-orbit pointing calibration of the spacecraft high-gain antenna, and lay a foundation for high-precision calculation of the antenna's on-orbit pointing error. see figure 1 , which is a schematic diagram of an implementation process of an embodiment of the method for determining the synchronization...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention relates to the technical field of spaceflight measurement and control, and provides a method for determining the synchronization deviation of spacecraft antenna on-orbit data synchronization deviation, which includes: obtaining the scanning angle of the high-gain antenna pointing scan of the spacecraft, and scanning the high-gain antenna pointing The power data measured by the ground measurement and control equipment; among them, the scanning angle adopts the spacecraft time scale, and the power data adopts the ground time scale; the synchronization deviation of the scanning angle and power data is roughly searched to obtain the first deviation result; according to the first deviation result, The synchronization deviation of the scanning angle and power data is finely searched to obtain the data synchronization deviation of the device. The invention uses rough search and fine search to obtain high-precision device-ground data synchronization deviation, the method has strong adaptability and good robustness, and satisfies the requirement of spacecraft high-gain antenna on-orbit pointing calibration for high-precision device-ground data synchronization.
Description
technical field [0001] The invention relates to the technical field of spaceflight measurement and control, in particular to a method for determining the synchronization deviation of spacecraft-ground data for on-orbit pointing calibration of spacecraft antennas. Background technique [0002] At present, many spacecraft are equipped with large-aperture, high-gain antennas, and their narrow beam characteristics require that the antenna must have high-precision on-orbit pointing, which determines the quality of the measurement and control communication link and even the success or failure of the mission. For this reason, it is usually necessary to perform a special pointing calibration on the high-gain antenna of the spacecraft after it is in orbit, and measure the pointing error. One of the keys to pointing calibration is to align the spacecraft scan angle data with the ground received power data, and correctly obtain the change curve of the ground received power versus scan ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G06F17/18
CPCG01C25/00G06F17/18
Inventor 徐得珍
Owner NO 63921 UNIT OF PLA