A batch fast acquisition method of sentinel image data
A technology of image data and acquisition method, which is applied in the field of communication, can solve problems such as acceleration, concurrent number limitation, and no download provided, and achieve the effect of strong scalability
Active Publication Date: 2022-07-22
江苏天汇空间信息研究院有限公司
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Problems solved by technology
[0002] When downloading files on the official website of Sentinel Image, you can register an account and then directly query the download data on the website to download, or you can programmatically call the official API interface SentinelAPI to realize batch download of files; but the above methods are usually There are the following deficiencies: First, the official website of Sentinel Image only allows a single user to download at most two links at the same time, that is, files, and there is a limit on the number of concurrency; second, the official API can achieve up to 2000 links. Download, but a single user can only download two files at the same time; third, the official website and API do not provide the function of download acceleration; fourth, the official website does not provide the function of downloading data according to administrative divisions; fifth, the official offline data It cannot be downloaded directly, and each user can only download and activate up to 20 offline data per day
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[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0037] see figure 1 , the present invention provides a technical solution: a batch fast acquisition method of sentinel image data, the method includes:
[0038] Step S100: Use the time of the required image, the range of the required image, the data type of the required image, and the cloud amount of the required image as input conditions to obtain the metadata of the image data through programming through the official interface senti...
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The invention discloses a method for quickly acquiring sentinel image data in batches, comprising step S100: taking the time of the required image, the range of the required image, the data type of the required image, and the cloud amount of the required image as input conditions through the sentinel The official interface sentinel API provided by the website can obtain the metadata of the image data through programming; Step S200: generate a geojson file G1 from the metadata and create a text file T1, and start downloading the relevant image data; Step S300: use the Aria2 open source download tool to help Simplify the download process; use the user pool and the process pool to manage the download process; step S400: read the file name information of the geojson file G1, and compare the file name information of the geojson file G1 with the file name information of the local file; and Record the comparison result in the text file T1; step S500: read the text file T1 sequentially to determine the file download status; step S600: manage the image data download based on the above-obtained determination result.
Description
technical field [0001] The invention relates to the technical field of communications, in particular to a method for quickly acquiring sentinel image data in batches. Background technique [0002] When downloading files on the official website of Sentinel Image, you can register an account and then directly query the download data on the website to download, or you can download files in batches by programming calls on the official API interface SentinelAPI; but the above methods are usually There are the following shortcomings: First, the official website of Sentinel Image only allows a single user to download at most two links at the same time, that is, files, and there is a limit on the number of concurrent links; second, the official API can achieve a maximum of 2,000 links. Download, but a single user can only download two files at the same time; third, the official website and API do not provide download acceleration function; fourth, the official website does not provi...
Claims
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IPC IPC(8): G06F16/51G06F16/53G06F16/58G06F16/11G06F16/25G06F21/31
CPCG06F16/51G06F16/53G06F16/58G06F16/116G06F16/25G06F21/31
Inventor 张业红顾行发黄祥志许王疆朱玉婷
Owner 江苏天汇空间信息研究院有限公司