CN110737002A - Quick-look test method for satellite cameras - Google Patents
Quick-look test method for satellite cameras Download PDFInfo
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- CN110737002A CN110737002A CN201911021708.4A CN201911021708A CN110737002A CN 110737002 A CN110737002 A CN 110737002A CN 201911021708 A CN201911021708 A CN 201911021708A CN 110737002 A CN110737002 A CN 110737002A
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- 238000010998 test method Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000004088 simulation Methods 0.000 claims abstract description 9
- 238000007405 data analysis Methods 0.000 claims abstract description 6
- 230000006837 decompression Effects 0.000 claims abstract description 6
- 238000013500 data storage Methods 0.000 claims abstract description 5
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims 2
- 238000011897 real-time detection Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 238000011158 quantitative evaluation Methods 0.000 description 2
- 108091092919 Minisatellite Proteins 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/20—Integrity monitoring, fault detection or fault isolation of space segment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Computer Security & Cryptography (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention provides a quick-view method for testing satellite cameras, which comprises the steps of S1, data acquisition S2, data storage, S3, data real-time processing and display, S4, data playback, S5, data analysis, S6, data decompression, S7, equipment self-check, S8, data receiving, S9, data automatic judgment, S10, auxiliary information display, S11, image information statistics, S12, data comparison, S13, image processing, S14, camera data output time sequence simulation, and S15, data output time sequence simulation of a data transmission and reduction device.
Description
Technical Field
The invention relates to the field of satellite quick-view, in particular to a quick-view testing method for satellite cameras.
Background
The quick-look function of the remote sensing satellite data is to qualitatively judge the satellite data receiving quality by displaying the received image in real time in the satellite receiving process, and has an important function of ensuring the receiving normal operation of a receiving system. The quick-vision processing system is developed from the purpose of performing simple qualitative inspection on the quality of data received locally, to the application of remote sensing image and information real-time monitoring, remote sensing image broadcasting and popular science propaganda. The maturity of large screen display devices and network technology, the great improvement of computer performance, and the development of software engineering also provide conditions for the development and innovation of novel quick-view processing systems.
Disclosure of Invention
The invention aims to provide satellite camera test quick-vision methods, which realize the acquisition, storage, display and playback of quick-vision data and the real-time and post-analysis of the data.
The aim of the invention is achieved by the following technical measures:
A method for testing quick view of a satellite camera, the method comprises:
s1, data acquisition
S2, data storage
S3, real-time data processing and displaying
S4, data playback
S5, data analysis
S6, data decompression
S7, equipment self-checking
S8, data reception
S9, automatic data judgment
S10, displaying auxiliary information
S11, statistics of image information
S12, data comparison
S13, image processing
S14 simulation of camera data output time sequence
S15 data output time sequence simulation of data transmission and decrement equipment
, S3 includes displaying fast-view data in real time, displaying images on CCD slices in real time, supporting a real-time display function of 1-16-path fast-view data, displaying continuous scrolling or refreshing or scene-changing display function of all data of a camera, synchronizing software and hardware, displaying image data in a manner of gray scale or DN value amplitude in a switching manner, displaying error information of line synchronization head and line counting of the image, counting error rate of the fast-view data in real time, detecting abnormal image data including but not limited to bright lines, flower blocks, bright spots and the like in real time, displaying abnormal data line numbers in a log display area in real time, rapidly positioning the abnormal data to the abnormal data position in a manner of selecting logs after processing is finished, displaying the abnormal data in an image display area in a manner of image, displaying panoramic or local data blocks of a plurality of CCDs or a single CCD slice, supporting splicing and displaying, synchronously extracting auxiliary data in a camera data format, restoring the auxiliary data to engineering parameters for display, and dynamically controlling the position, the progress and the progress of data playback through a progress bar when data is played back.
, S4 includes the steps of retrieving and displaying historical data, single playback and loop playback, pausing playback and resuming playback from a pause point, reporting line synchronization head error and line counting error information in original data while playing back, detecting abnormal image data in playback data, including but not limited to bright lines, flower blocks, bright spots and the like, and displaying abnormal data content in image form by clicking after processing is finished, and providing independent playback capability for auxiliary data.
, the S5 includes steps of checking line count and line synchronization header information to determine whether line loss or line number error occurs, storing satellite engineering data in the form of original codes, judging the correctness of specified satellite time data, and counting the mean value, variance and the ratio of the mean value to the variance according to image columns.
, the specific steps of S8 are to transmit and store the raw data of the data receiving server to the data processing server through data line or network cable, and to use software to drive the data output and input, so as to ensure that different servers can be used as both input and output.
, the S11 specific steps include statistics of gray values of pixels of the image to obtain image indexes such as SNR, information entropy, contrast, maximum value and minimum value, objective and quantitative evaluation and analysis of image quality to check performance and faults of the camera.
, S12 includes comparing and analyzing the data output under different time and different state parameters, outputting statistics and comparison result graph, comparing and analyzing the data set selected by the user to be compared by using the statistics and analysis function, and outputting statistics and result graph.
, S13 includes splitting, processing and comparing the fast-view image in real time and afterwards, calculating and processing indirect quantity, and analyzing the auxiliary data.
, the specific steps of S14 are simulating the data output process of the camera according to the input parameters, and simulating the data output time sequence of the camera, wherein the output data is used for testing the quick-vision system.
, the specific steps of S15 are simulating data output process of data transmission ground inspection according to the input parameters, simulating data output time sequence of the data transmission ground inspection equipment, and the output data is used for testing the quick-vision system.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that:
the method is applied to scenes such as a camera subsystem acceptance test, a data transmission and camera system joint test, a whole-satellite comprehensive test, a whole-satellite large-scale test, a satellite and ground application system butt joint test and the like of the satellite, and realizes the acquisition, storage, display and playback of quick-view data, real-time and post-event analysis of the data and the like.
Detailed Description
The satellite camera test quick-look method comprises the following steps:
s1, data acquisition
S2, data storage
S3, real-time data processing and displaying
S4, data playback
S5, data analysis
S6, data decompression
S7, equipment self-checking
S8, data reception
S9, automatic data judgment
S10, displaying auxiliary information
S11, statistics of image information
S12, data comparison
S13, image processing
S14 simulation of camera data output time sequence
S15 data output time sequence simulation of data transmission and decrement equipment
The specific method comprises the following steps:
s1 quick look data collection
The universal data acquisition module has the characteristic of universality and is suitable for different types of quick-vision data formats and data volume requirements.
S2 quick look data storage
Fast shunt storage of the quick-look data; and the automatic distribution and storage function of the engineering data in the quick look data.
S3; data real-time processing and display
The method comprises the steps of dividing CCD (charge coupled device) slices to display images, supporting a real-time display function of 1-16-path quick-view data, continuously scrolling or refreshing or changing scene display of all data of a camera, displaying error information of line synchronization heads and line counting of image data, counting error rate of the quick-view data in real time, detecting abnormal image data including but not limited to bright lines, flower blocks, bright points and the like in real time, displaying line numbers of the abnormal data in a log display area (the line numbers of th line are displayed in real time in a continuous abnormal mode), quickly positioning the abnormal data to an abnormal data position in a log clicking mode after processing is finished, displaying the image in the image display area in a mode of displaying panoramic or local data blocks of a plurality of CCD slices or a single CCD slice, supporting display after splicing, synchronously extracting auxiliary data in a camera data format, restoring the auxiliary data into engineering parameters for display, and dynamically controlling the position, the progress and the progress of the data and the like through a progress bar during data playback.
S4 quick view data playback
Retrieving and displaying historical data; the device has the functions of single playback and cyclic playback; the playback can be paused, and then the playback is continued from the pause point; reporting line synchronization header error and line count error information in the original data while playing back; detecting abnormal image data in the playback data, including but not limited to bright lines, flower blocks, bright spots and the like, and quickly displaying abnormal data contents in an image form in a clicking mode after the processing is finished; the ability to have separate playback of the auxiliary data.
S5 quick look data analysis
Judging whether the line is lost or the line number is wrong or not by checking the line counting and the line synchronization header information;
storing satellite engineering data in the form of original codes;
carrying out correctness interpretation on specified satellite time data;
and carrying out statistics on the mean value, the variance and the ratio of the mean value to the variance according to the image columns.
S6 quick view data decompression
The method realizes the compression and decompression functions of the quick-vision data and supports lossy compression and lossless compression.
S7 quick vision equipment self-checking
Whether the quick-vision equipment works normally is detected through a self-checking data source for sensor data acquisition and through transmission and analysis.
S8 data reception
Transmitting and storing original data of the data receiving server to a data processing server through a data line or a network cable; the software is used for driving data output and input, so that different servers can be used as input ends and output ends.
S9 data automatic discrimination
The method can automatically identify and position the noise of the received satellite data, determine the position of the noise and give corresponding marks. Two requirements of real-time interpretation and historical data interpretation are supported, and the specific requirements are detailed in 1.2.3 and 1.2.4.
S10 auxiliary information display
Dynamically extracting auxiliary data in a camera data format in real time, restoring the auxiliary data into engineering parameters and displaying the engineering parameters on a screen; according to the general communication protocol specification for automatic testing of minisatellite, packaging the auxiliary data into SCOE format data to be multicast to the corresponding multicast address and port; the system has a universal engineering data analysis configuration function, and auxiliary information is analyzed and processed according to the analysis configuration file.
S11 statistics of image information
Counting the gray value of each pixel of the image to obtain image indexes such as SNR, information entropy, contrast, maximum value, minimum value and the like; and performing objective and quantitative evaluation and analysis on the image quality, and further checking the performance and the fault of the camera.
S12 data comparison
Comparing and analyzing data output under different time and different state parameters, and outputting statistics (mean, variance and distribution) and a comparison result graph; and performing comparative analysis on the data sets to be compared selected by the user by utilizing a statistic and analysis function, and outputting statistic and a result graph.
S13 image processing
Splitting, processing and comparing and analyzing the fast-view image in real time and afterwards; indirect quantities (such as satellite velocity, position, observation angle, etc.) are calculated and processed, and assistance data is parsed.
S14 camera data output timing simulation
Simulating a data output process of the camera according to the input parameters; and simulating the data output time sequence of the camera, wherein the output data is used for testing the quick-look system.
S15 data output time sequence simulation of data transmission ground detection equipment
The data output process of data transmission ground detection can be simulated according to the input parameters; and the data output time sequence of the analog data transmission ground detection equipment is used for testing the quick-vision system.
Claims (10)
1, satellite camera test quick-look method, characterized by that, the method includes:
s1, data acquisition
S2, data storage
S3, real-time data processing and displaying
S4, data playback
S5, data analysis
S6, data decompression
S7, equipment self-checking
S8, data reception
S9, automatic data judgment
S10, displaying auxiliary information
S11, statistics of image information
S12, data comparison
S13, image processing
S14 simulation of camera data output time sequence
And S15, simulating the data output time sequence of the data transmission decrementing equipment.
2. The satellite camera test quick-view method according to claim 1, wherein S3 includes real-time display of quick-view data, image display of divided CCD slices supporting a real-time display function of 1-16-channel quick-view data, continuous scrolling or refreshing or scene change display of all data of a camera, software and hardware synchronization mode which is selectable, image data can be switched and displayed in a gray scale or DN value amplitude mode, display of error information of image line synchronization head and line counting, real-time statistics of quick-view data error rate, real-time detection of abnormal image data including but not limited to bright lines, flower blocks, bright spots and the like, real-time display of abnormal data line numbers in a log display area, fast positioning to an abnormal data position by clicking a log after processing is finished, display of the abnormal data position in an image display area, panoramic display of a plurality of CCD or single-chip CCD or local data blocks, support extraction of spliced CCD data, synchronous extraction of auxiliary data in a CCD camera data format and restoration of the auxiliary data to engineering parameters for display, and dynamic playback of progress data through progress control bars and progress control.
3. The method for testing quick view of satellite camera as claimed in claim 1, wherein the S4 includes the steps of retrieving and displaying historical data, single playback and loop playback, pausing playback and resuming playback from a pause point, reporting line synchronization head error and line counting error information in original data while playing back, detecting abnormal image data including but not limited to bright lines, blocs, bright spots, etc. in playback data, and displaying the abnormal data content in image form by clicking after processing is finished, and providing auxiliary data with independent playback capability.
4. The method of claim 1, wherein the S5 includes steps of determining whether a row is lost or a row number is wrong by looking up row count and row sync header information, storing satellite engineering data in the form of original codes, performing correctness interpretation on specified satellite time data, and performing statistics on mean, variance and ratio of mean to variance according to image columns.
5. The method for testing the quick view of a satellite camera as claimed in claim 1, wherein the step S8 is to transmit and store the raw data of the data receiving server to the data processing server via data line or network cable, and to use software to drive the data output and input, so as to ensure that different servers can be used as both input and output.
6. The method of claim 1, wherein the S11 includes the steps of calculating gray scale values of pixels of an image to obtain image indicators such as SNR, entropy, contrast, maximum and minimum, objectively and quantitatively evaluating and analyzing image quality to check performance and failure of the camera.
7. The method of claim 1, wherein the step S12 includes the steps of comparing and analyzing the data outputted at different time and different state parameters, outputting statistics and a comparison result graph, comparing and analyzing the data set selected by the user to be compared by using the statistics and analysis function, and outputting statistics and a result graph.
8. The method of claim 1, wherein the step S13 includes performing a split processing and analysis of the fast view image in real time and afterwards, calculating and processing indirect quantities, and analyzing the auxiliary data.
9. The method for testing the quick view of a satellite camera as claimed in claim 1, wherein the step S14 includes simulating the data output process of the camera according to the input parameters, and simulating the data output timing sequence of the camera, the output data being used to test the quick view system.
10. The method of claim 1, wherein the step S15 includes simulating data output process of data transmission ground inspection according to input parameters, simulating data output timing of data transmission ground inspection equipment, and outputting data for testing the quick-vision system.
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Cited By (1)
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Application publication date: 20200131 |