Method and device of obtaining distance between space target and observation station
A technology for space targets and observation stations, applied in measuring devices, re-radiation of electromagnetic waves, radio wave measurement systems, etc., can solve problems such as inability to detect weak echoes by single-photon detectors, wrong calculation of time to turn on single-photon detectors, etc.
Active Publication Date: 2014-04-02
中国科学院国家天文台长春人造卫星观测站
View PDF4 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In view of this, the present invention provides a method and device for obtaining the distance between the space object and the observation station, to overcome the problem in the prior art that the distance between the single photon detector of the observation station and the reflective surface of the space object is not corrected. method, which may lead to a wrong calculation of the time when the single photon detector is turned on, and the problem that the single photon detector cannot detect weak echoes
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
[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] Space object laser ranging is a precise tracking and measurement technology, first of all, it needs to obtain the predicted orbit of the space object, which is calculated by the data center based on the observation data of the past period of time. The predicted orbit may have forecast deviation, but the space target must enter the field of view of the observatory, so that the single-photon detector of the observatory can receive the weak echo reflected b...
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 embodiment of the invention provides a method and a device of obtaining the distance between a space target and an observation station. The method comprises the steps of firstly obtaining historical data comprising the corresponding relation of time and space target optical position information and the distance information between the space target and the observation station; speculating data of future moment by the historical data, namely, a space region where a next moment space target possibly appears; when the next moment arrives, obtaining an optical position deviation value between the predicted position information of the space target, which is speculated, and the actual position information of the space target; speculating a distance modification value of the distance information between the current moment space target and the observation station according to the optical position deviation values of the space target at different moments, thus performing amendment on the distance between the space target and the observation station, which is forecast and provided in advance, accurately calculating the time of starting a single photon detector, and detecting weak echo by the single photon detector.
Description
technical field [0001] The invention relates to the field of astrometry, and more specifically relates to a method and a device for obtaining the distance between a space object and an observation station. Background technique [0002] In the next generation of space monitoring technology, space target laser ranging (Satellite Laser Ranging, SLR) is a technology to measure the distance between the single photon detector of the observatory and the space target. The laser transmitter emits laser pulses, and the weak echo (one or more photons) reflected by the space target reflector is detected by the single-photon detector of the observatory. The single-photon detection of the observatory can be calculated by accurately measuring the round-trip time of the laser pulse. The distance between the sensor and the space target. [0003] The single-photon detector can detect weak echoes after being turned on, and the duty cycle of the single-photon detector (the time difference betw...
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 Applications(China)
IPC IPC(8): G01S17/08
CPCG01S7/497G01S17/08
Inventor 韩兴伟梁智鹏宋清丽董雪
Owner 中国科学院国家天文台长春人造卫星观测站