Signal parameter acquisition method and system, storage medium and electronic equipment
A technology of signal parameters and acquisition methods, which is applied in the field of space detection, can solve problems such as the problem of not taking light travel time into account, and achieve the effect of improving data transmission efficiency
Active Publication Date: 2021-08-10
BEIJING AEROSPACE CONTROL CENT
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Problems solved by technology
However, in the prior art, multiple iterations are used in the acquisition technology of spacecraft downlink signals, and the problem of light travel time is not considered.
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Embodiment 1
[0165] Embodiment 1. The ephemeris data is read based on the input time information. Because the ephemeris coordinates and the station coordinates are in the same coordinate system, it is convenient to obtain the positional relationship of the detector relative to the station. The specific formula for converting the detector coordinates to the detector coordinates R(x, y, z) with the station as the origin is:
[0166] R(x,y,z)=[(x s -x sta ), (y s -y sta ),(z s -z sta )]
[0167] where x s is the X-axis value of the detector coordinates, y s is the Y-axis value of the detector coordinates, z s is the Z-axis value of the detector coordinates, x sta X-axis value of station coordinates, y sta Y-axis value of station coordinates, z sta is the Z-axis value of the station coordinates, R(x, y, z) is the position change of the detector relative to the station;
[0168] According to the relative positional relationship between the detector and the measuring station after co...
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The invention relates to the field of space detection, in particular to a signal parameter acquisition method and system, a storage medium and electronic equipment. The method comprises the following steps: step 1, acquiring an ephemeris file; step 2, based on the ephemeris file, converting a detector coordinate into a first detector coordinate with the observation station as an original point; step 3, calculating the distance between the detector and the observation station according to the first detector coordinate; step 4, according to the distance, calculating the optical line time when the detector downlink signal reaches the observation station; step 5, converting the optical line time when the detector downlink signal arrives at the observation station into the optical line time when the observation station receives the downlink signal; and step 6, calculating the Doppler frequency of receiving the downlink signal by the observation station according to the light traveling time of the downlink signal at the receiving moment of the observation station, and determining the acquisition parameter of the spacecraft signal by the observation station according to the Doppler frequency. The method does not need iteration, and can quickly forecast the Doppler change of the detector relative to the observation station, so as to determine the acquisition parameters of the observation station on the spacecraft signal.
Description
technical field [0001] The invention relates to the field of space detection, in particular to a signal parameter acquisition method, system, storage medium and electronic equipment. Background technique [0002] Interferometry technology plays an important role in deep space exploration missions. With the completion of existing space stations and the configuration of interferometry equipment, the baseline configuration of the interferometry system for measurement and control networks has been greatly enriched. Limited by the communication bandwidth with foreign stations, the real-time transmission of measurement data to the interferometric signal processing center of the measurement and control network is a key condition that restricts the validity of the data, and the signal collected by the interferometric system is the main carrier wave of the detector and the DOR side tone is a single point Therefore, accurate collection of spacecraft downlink signals in narrowband mode...
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Login to View More IPC IPC(8): G01S19/25G01S19/37
CPCG01S19/256G01S19/37
Inventor 王美于天一姜萍任天鹏陈略韩松涛可荣硕
Owner BEIJING AEROSPACE CONTROL CENT