A Calculation Method of Cloud Blocking Time Window for Agile Optical Satellites
A time window, optical satellite technology, applied in the field of agile optical satellites, can solve the problems of reduced imaging quality, reduced imaging resolution, etc., to achieve the effect of reducing complexity and reducing the amount of calculation
Inactive Publication Date: 2017-09-29
NAT UNIV OF DEFENSE TECH
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The imaging visible time window of the Agile Optical Satellite lasts for a long time, and the imaging resolution is different at different imaging times. The imaging quality of the satellite is the best when the satellite flies directly above the mission, that is, the satellite is at the midpoint of the visible time window for imaging. , but if the midpoint position is blocked by clouds, the satellite must have a certain pitch angle and roll angle for imaging. Due to the large imaging azimuth angle, the imaging resolution will be reduced, resulting in a decrease in imaging quality
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
[0038] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .
[0039] Such as Figure 1 to Figure 4 Shown, cloud layer of the present invention is to the computing method of the blocking time window of agile optical satellite: comprise the following steps:
[0040] S1: Calculate the visible time window of the agile optical satellite for all missions;
[0041] S2: Calculate all the ephemeris information of the agile optical satellite;
[0042] S3: Take the visible time window and perform the following operations:
[0043] S3.1: According to the maximum visible range of the agile optical satellite for target observation and the relative distance between the cloud...
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 invention discloses a method for calculating a shade time window of a cloud layer for an agile optical satellite. The method mainly includes the steps of S1, calculating visible time windows of the agile optical satellite for all tasks; S2, calculating all ephemeris information of the agile optical satellite; S3, using the visible time windows to calculate the shade time window of the cloud layer for the agile optical satellite; S4, judging whether or not all of the visible time windows are traversed; if not, going to the step S3; and if yes, confirming complete calculation. The method has the advantages that calculation complex is low, calculation is low and calculating speed is high.
Description
technical field [0001] The invention relates to the technical field of agile optical satellites, in particular to a method for calculating the time window of cloud coverage for agile optical satellites. Background technique [0002] Compared with traditional earth observation satellites, agile optical satellites can move in the directions of three axes (roll, pitch and yaw), and have degrees of freedom in three directions, which allows the satellite to obtain images in the interval and when acquiring images All are mobile. Optical imaging remote sensor is a common sensor carried by agile optical satellites. The vast majority of optical remote sensors are passive remote sensors, which only receive the reflection from the target or the optical radiation emitted by itself. Among them, the visible light remote sensor is a relatively mature optical remote sensor, which has a large amount of photo information and high resolution, but it can only work in sunny days and cannot wor...
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): G01S17/89
CPCG01S7/497G01S17/89
Inventor 刘晓路杨振宇何磊贺仁杰姚锋李菊芳邢立宁王沛陈盈果陈成
Owner NAT UNIV OF DEFENSE TECH