CN101304408B - Method for processing remote sensing satellite load data - Google Patents
Method for processing remote sensing satellite load data Download PDFInfo
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- CN101304408B CN101304408B CN2008100183596A CN200810018359A CN101304408B CN 101304408 B CN101304408 B CN 101304408B CN 2008100183596 A CN2008100183596 A CN 2008100183596A CN 200810018359 A CN200810018359 A CN 200810018359A CN 101304408 B CN101304408 B CN 101304408B
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Abstract
The invention discloses a processing method for remote sensing satellite load data, which is realized by hardware in a large-capacity solid-state recorder carried by the satellite. The invention is characterized in that a characteristic information extracting module and an embedded mapping module are added between reading and writing modules; wherein, the characteristic information extracting module can extract the characteristic information of each passage of data from a loading data stream which is continuously stored in the solid-state recorder; the embedded mapping module can build up a one-to-one correspondence between the characteristic information of each section of loading data and the practical address in which the information is stored. The method of the invention can lead the users of the satellite to extract the part users cared from the all the loading data stored in the large-capacity solid-state recorder and the part of loading data can be sent back to the ground in the limited transit time of the satellite so as to greatly improve the access efficiency of the users of the satellite to oversea loading data.
Description
Technical field
The present invention relates to a kind of processing method of remote sensing of the earth satellite load data transmission, particularly a kind of a kind of treatment system additional to load data in the satellite carried big capacity solid-state memory of remote sensing of the earth that does not have operating system (software) to support.
Background technology
Remote sensing of the earth satellite (EOS) is with the ground remote sensing information of obtaining the transition areas and to be transferred to that terrestrial user is used be purpose.The ground data receiving station of China's satellite user generally all is located within our borders, in order to obtain ground remote sensing information overseas, the terrestrial information that just must be with satellite flight obtains during overseas temporarily is kept in the spaceborne mass storage, waits satellite to fly back and gives ground data receiving station by antenna transmission again when domestic.For a long time, spaceborne big capacity solid-state memory is worked according to the mode of similar magnetic tape station always, promptly when satellite flight abroad the time continuously with remote sensing load, as visible light camera, synthetic aperture radar etc., the terrestrial information that obtains (convert it into be load data in professional domain) order is kept in the memory, from first to last completely pass the total data of being preserved back grounded receiving station when satellite flies back again when domestic, in all data of receiving, find out the part of being concerned about by satellite user then.
But along with improving constantly of remote sensing load technology, the load data amount is also increasing, makes total data have been passed in satellite once passes by with conventional method, must all data could have been passed several times by branch.And the remote sensing of the earth satellite can only pass by four times general every day, so just greatly reduces the obtain efficient of satellite user to remote sensing information overseas.
Summary of the invention
The objective of the invention is to propose a kind of processing method at remote sensing satellite load data, this method is realized in spaceborne big capacity solid-state memory by hardware, make satellite user extract the part of being concerned about in all load datas from be kept at big capacity solid-state memory as required, and pass this part load data back ground at satellite in limited time of passing by, thereby improve satellite user greatly to the access efficiency of load data overseas.
For reaching above purpose, the present invention takes following technical scheme to be achieved:
A kind of processing method of remote sensing satellite load data comprises the steps:
(1). the record data interface module receives the load data from payload equipment, delivers to then and writes control module; When writing control module and deposit the load data that receives in big capacity storage module, also the actual address information that this load data is kept in the big capacity storage module is sent to characteristic information extracting module;
(2) characteristic information extracting module extracts characteristic information from the load data of receiving, the actual address information of preserving in big capacity storage module together with this segment data is sent to embedded mapping block in the lump; Embedded mapping block is preserved the load data characteristic information that extracts, the actual address information that this section load data is preserved in big capacity storage module in the mode of form;
(3) characteristic information extracting module receives the demand information from the user command receiving equipment, then this demand information is converted to the load data characteristic information and gives embedded mapping block; Embedded mapping block is according to the characteristic information that receives, in the form of being preserved, find corresponding load data be kept at actual address in the big capacity storage module, this actual address is given read control module then;
(4) read control module according to the actual address that receives, from big capacity storage module, read corresponding load data and give the playback of data interface module; The playback of data interface module will be read the data transmission set that required load data that control module sends here goes up via satellite and pass ground data receiving station back.
In the said method, the characteristic information that described characteristic information extracting module extracts from the load data of receiving comprises document number feature, writing time feature and three information of file bias internal measure feature; The actual address information that described load data is preserved in big capacity storage module comprises data segment initial address and data segment end address.
Compare with the spaceborne big capacity solid-state memory load data processing mode of the similar magnetic tape station of tradition, the inventive method can improve the terrestrial user of satellite greatly to being kept at the access efficiency of load data in the solid-state memory.
Description of drawings
Fig. 1 is a solid-state memory hardware system functional block diagram of handling load data on remote sensing satellite by the inventive method.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the solid-state memory hardware system that the inventive method is handled load data comprises record data interface module, playback of data interface module, reads control module, writes control module and big capacity storage module, and the input of record data interface module connects the payload equipment of satellite; The output of playback of data interface module connects the data transmission set of satellite; It is characterized in that increasing has characteristic information extracting module and embedded mapping block between the reading and writing control module.Wherein, characteristic information extracting module can extract the characteristic information of each segment data from the payload data stream that deposits solid-state memory continually in; Embedded mapping block can be corresponding one by one with the actual address of being preserved with the characteristic information of one section load data.
The processing procedure of load data is as follows:
(1) the record data interface module receives the load data from payload equipment, delivers to then and writes control module; When writing control module and deposit the load data that receives in big capacity storage module, also the actual address information that this load data is kept in the big capacity storage module is sent to characteristic information extracting module; (2) characteristic information extracting module extracts characteristic information from the load data of receiving, the actual address information of preserving in big capacity storage module together with this segment data is sent to embedded mapping block in the lump; Embedded mapping block is preserved the load data characteristic information that extracts, the actual address information that this section load data is preserved in big capacity storage module in the mode of form; (3) characteristic information extracting module receives the demand information from the user command receiving equipment, then this demand information is converted to the load data characteristic information and gives embedded mapping block; Embedded mapping block is according to the characteristic information that receives, in the form of being preserved, find corresponding load data be kept at actual address in the big capacity storage module, this actual address is given read control module then; (4) read control module according to the actual address that receives, from big capacity storage module, read corresponding load data and give the playback of data interface module; The playback of data interface module will be read the data transmission set that required load data that control module sends here goes up via satellite and pass ground data receiving station back.
Following table by in the embedded mapping block the example of preservation form.
In this example, each data segment has extracted three characteristic informations, and wherein document number is represented the pairing geographical location information overseas of this section load data (spatial information); Represent writing time remote sensor to collect the temporal information of this section load data; File bias internal amount represent this section load data the corresponding accurate location in geographical position overseas.Document number feature decimally numerical table is shown; Writing time the characteristic information binary number representation; File bias internal measure feature is represented with four hexadecimal numbers; Data segment initial address and data segment end address are represented with nine hexadecimal numbers.
Claims (3)
1. the processing method of a remote sensing satellite load data is characterized in that, comprises the steps:
(1) the record data interface module receives the load data from payload equipment, delivers to then and writes control module; When writing control module and deposit the load data that receives in big capacity storage module, also the actual address information that this load data is kept in the big capacity storage module is sent to characteristic information extracting module;
(2) characteristic information extracting module extracts characteristic information from the load data of receiving, the actual address information of preserving in big capacity storage module together with this section load data is sent to embedded mapping block in the lump; Embedded mapping block is preserved the load data characteristic information that extracts, the actual address information that this section load data is preserved in big capacity storage module in the mode of form;
(3) characteristic information extracting module receives the demand information from the user command receiving equipment, then this demand information is converted to the load data characteristic information and gives embedded mapping block; Embedded mapping block is according to the characteristic information that receives, in the form of being preserved, find corresponding load data be kept at actual address in the big capacity storage module, this actual address is given read control module then;
(4) read control module according to the actual address that receives, from big capacity storage module, read corresponding load data and give the playback of data interface module; The playback of data interface module will be read the data transmission set that required load data that control module sends here goes up via satellite and pass ground data receiving station back.
2. the processing method of remote sensing satellite load data according to claim 1, it is characterized in that, the characteristic information that described characteristic information extracting module extracts from the load data of receiving comprises document number feature, writing time feature and three information of file bias internal measure feature; The actual address information that described load data is preserved in big capacity storage module comprises data segment initial address and data segment end address.
3. the processing method of remote sensing satellite load data according to claim 2 is characterized in that, described document number feature decimally numerical table is shown; Writing time the characteristic information binary number representation; File bias internal measure feature is represented with hexadecimal number; Data segment initial address and data segment end address are also represented with hexadecimal number.
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| CN2008100183596A CN101304408B (en) | 2008-06-03 | 2008-06-03 | Method for processing remote sensing satellite load data |
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| CN2008100183596A CN101304408B (en) | 2008-06-03 | 2008-06-03 | Method for processing remote sensing satellite load data |
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| CN101304408B true CN101304408B (en) | 2010-11-03 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488796B (en) * | 2009-02-24 | 2012-09-26 | 航天东方红卫星有限公司 | Payload management system and method for satellite |
| CN102081158B (en) * | 2009-11-30 | 2013-03-27 | 上海卫星工程研究所 | Load data recording system for polar orbiting meteorological satellite |
| CN102142189B (en) * | 2010-01-29 | 2013-03-27 | 上海卫星工程研究所 | Multi-channel telemetry transmission system |
| CN102436465B (en) * | 2011-09-01 | 2013-05-01 | 北京空间飞行器总体设计部 | Telemetry data compression storage and rapid query method of ontrack spacecraft |
| US11201707B2 (en) | 2017-03-06 | 2021-12-14 | The Boeing Company | Secured independent hosted payload operations |
| US10516992B2 (en) | 2017-03-06 | 2019-12-24 | The Boeing Company | Commercial satellite operations with secure enclave for payload operations |
| ES2842923T3 (en) * | 2017-10-03 | 2021-07-15 | Boeing Co | Independent and secure guest payload operations |
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| CN1149916A (en) * | 1994-06-03 | 1997-05-14 | 沃尔弗勒姆·基尔赫纳 | Method for collection, analysis, measurement and storage of geographical data |
| US6215458B1 (en) * | 1996-03-20 | 2001-04-10 | Centre National D'etudes Spatiales | Observation or telecommunication satellites |
| CN1585301A (en) * | 2004-05-28 | 2005-02-23 | 上海硅力电子科技有限公司 | Method and device for layered priority control of high and low space remote sensing positioning servo of satellite communication |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149916A (en) * | 1994-06-03 | 1997-05-14 | 沃尔弗勒姆·基尔赫纳 | Method for collection, analysis, measurement and storage of geographical data |
| US6215458B1 (en) * | 1996-03-20 | 2001-04-10 | Centre National D'etudes Spatiales | Observation or telecommunication satellites |
| CN1585301A (en) * | 2004-05-28 | 2005-02-23 | 上海硅力电子科技有限公司 | Method and device for layered priority control of high and low space remote sensing positioning servo of satellite communication |
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