CN1156710C - Real-time ground processing system for synthetic aperture imaging radar - Google Patents
Real-time ground processing system for synthetic aperture imaging radar Download PDFInfo
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- CN1156710C CN1156710C CNB001249290A CN00124929A CN1156710C CN 1156710 C CN1156710 C CN 1156710C CN B001249290 A CNB001249290 A CN B001249290A CN 00124929 A CN00124929 A CN 00124929A CN 1156710 C CN1156710 C CN 1156710C
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Abstract
The present invention relates to a synthetic aperture imaging radar real-time ground processing system which belongs to the technical fields of data transmission and processing in electronic technologies. The processing system is composed of an antenna, a down converter, a demodulator, a real-time receiving microcomputer, a real-time control microcomputer, a work station, a printing microcomputer, a flight track display microcomputer, a freeze display microcomputer and eight corresponding cable wires. The working process of the processing system is controlled by a software program, and the present invention can be used for the technical fields of real-time disaster monitoring, environmental monitoring, military affair application, etc. The present invention has the main advantage that the processing system can be used for transmitting and processing a high resolution radar remote sensing image which is 3 meters or higher than 3 meters.
Description
Technical field
The invention belongs to data transmission and processing technology field in the electronic technology.
Background technology
In the original ground data processing method, with be workstation SUN20 at 6 meters resolution radar graphical design, only just can finish the function that required at that time with one, therefore the ground data disposal route has been only required a data transmission link, promptly can finish from receiving the image data transmission of microcomputer to workstation SUN20.Just data link designs around single data link, and data sink also is the specialized equipment in the workstation.Along with the increase of development of technology and demand, the active user requires 3 meters or the radar image that is higher than 3 meters resolution are handled, and has increased new function again.Therefore existing radar image data transmission processing method can't satisfy to be handled 3 meters or the radar image that is higher than 3 meters resolution.
The present invention is in order to satisfy the real-time Transmission task of high resolution synthetic aperture radar (SAR) image, the mode that adopts workstation and microcomputer to combine, can finish real time print, realtime graphic show, in real time geographical name lettering, deposit in real time, in real time the GPS location, freeze and operation such as flight path demonstration in real time in real time, and can carry out exchanges data by network and workstation.
Windows operating system is based on the Graphic Operating System of PC.Windows operating system mainly contains Windows95, Windows98, Windows2000, WindowsNT....Because the continuous enhancing of micro-computer function, improving constantly of CPU processing speed, the continuous decline of computer prices, make and use more and more widely based on the operating system of Windows95/98, increasing system is made of microcomputer, its arithmetic speed and reliability are poor unlike workstation, and prevailing operating system is exactly Windows operating system on the microcomputer at present.
Windows operating system is accepted by people widely, and people realize graphical interfaces (Gui) more and more.Along with the formal release of Windows98, Microsoft has released the powerful programming tool software based on the Windows98 operating platform immediately again: visual c++ 6.0.Visual c++ 6.0 has closely with Windows operating system gets in touch, have characteristics such as programming efficiency height, real-time, user interface close friend, thus in native system, select visual c++ 6.0 carry out system development be optimum only.
Summary of the invention
The scheme that the present invention adopts workstation to combine with microcomputer is finished the real-time demonstration of receiving remote sensing images, is freezed in real time, flight path shows and operation such as Flame Image Process that its system architecture as shown in Figure 1 in real time.
Synthetic aperture imaging radar real-time ground disposal route, by an antenna, a low-converter, a detuner, one receives microcomputer in real time, control microcomputer in real time for one, a workstation, a printing microcomputer, a flight path shows microcomputer, one is freezed to show microcomputer and eight respective electrical cables compositions, antenna is connected by cable one with low-converter, low-converter is connected by cable two with detuner, detuner is connected by cable three with the real-time microcomputer that receives, receive microcomputer in real time and be connected by cable four, control microcomputer and workstation in real time with real-time control microcomputer, print microcomputer, flight path shows microcomputer, freeze to show that microcomputer is respectively by cable five, cable six, cable seven, cable eight connects.
The course of work of the present invention is: the satellite forward signal that receives by antenna through amplification, after the frequency conversion, deliver to detuner and carry out demodulation, the base band data of detuner output is delivered to real-time reception microcomputer and is decrypted and data processing, the data of handling well are given the control microcomputer by network, and the control microcomputer transmits data to workstation.After workstation is received data, except that showing in real time in this locality and depositing in real time, also data are given other workstation, handle accordingly.In remote sensing images following times not, receive in real time microcomputer, in real time control microcomputer, print microcomputer, flight path shows microcomputer, freezes to show that microcomputer is in waiting status respectively, and be connected with real-time control microcomputer separately, wherein flight path demonstration microcomputer will be opened corresponding electronic chart and be ready.After remote sensing images get off, receive microcomputer received signal and roll display image on one side in real time, on one side image and corresponding GPS information are mail to real-time control microcomputer; The control microcomputer receives the view data of being sent by real-time reception microcomputer on one side in real time, image is rolled on screen, on one side according to the corresponding geographical name data bank of receiving of GPS information inquiry, on the image that rolls, show relevant place name, meanwhile, control microcomputer in real time and also will mail to flight path demonstration microcomputer to the current GPS information that receives; Flight path shows microcomputer according to the gps data that receives, the track and the corresponding work district that on electronic chart, draw fly past, and electronic chart is boarded a plane, and current rolling image region should be consistent on the work at present district that surveyed and the control computer screen in real time; When flight path shows that microcomputer sends gps data in real time, also send remote sensing image data at the control microcomputer to printing microcomputer, after printing microcomputer and receiving view data, on one side on screen the display scrolling image, on one side by printer print image in real time; Controlling in the process of microcomputer display scrolling image in real time, when when interested in a certain width of cloth remote sensing images, can click real-time control microcomputer and freeze option, then controlling the current screen image of microcomputer in real time just is sent to and freezes to show microcomputer and show, this current screen image is also deposited with corresponding form with relevant gps data and is freezed to show under the assigned catalogue of hard disk of microcomputer simultaneously, in order to calling at any time.After having freezed image of interest, just can carry out various operations on the microcomputer freezing to show.
In real time the control microcomputer is responsible for monitoring the request that each client computer connects, for each user promptly: receive microcomputer, workstation, printing microcomputer, flight path in real time and show microcomputer, freeze to show that microcomputer sets up network and connect.Be connected by setting up network with real-time reception microcomputer, view data and GPS information after the control microcomputer can obtain to decompress in real time, the roll display image is also inquired about the corresponding geographical information database system, carry out real-time geographic information annotation, and finish extraction to interesting target zone in the real-time Transmission image, and send it to and freeze to show that microcomputer handles, the interesting target zone of extraction is equivalent to the scope of display one screen.The control microcomputer at different user, provides its requested service difference as the side that service is provided in real time.For workstation, transmit pictorial data and gps data to it; For printing microcomputer, transmit pictorial data to it; Show microcomputer for flight path, transmit gps data to it; For freezing to show microcomputer, transmit the pictorial data and the gps data in the interesting target zone of extracting to it.In the total system course of work, control the connection status that microcomputer is constantly inquired about each client computer all the time in real time, in case client computer is had no progeny in connecting, control microcomputer in real time and can handle new connection request, and continue as it corresponding service is provided.
Control microcomputor program process flow diagram is as shown in Figure 2 in real time:
This flowchart text is as follows: at first before SAR image is also not following, should moves this control microcomputor program earlier, and set corresponding IP address, wait for that front end receives the connection of microcomputer; After secondly current termination receipts microcomputer connects, corresponding prompt information promptly is presented in the status bar of control microcomputer, if the control microcomputer also is sick for the words that other client computer sends image and gps data, so before remote sensing images are not following, preferably other client computer is also linked to each other with the control microcomputer, they separately the information of successful connection also in controlling the status bar of microcomputer, show; After whole client computer all connected, the control microcomputer just can be collected remote sensing images and gps data by the past termination receipts microcomputer, and they are mail to corresponding client computer in real time at last.
Print microcomputer and at first will send connection request, after network connects foundation, print microcomputer and just can obtain view data, and carry out real-time roll display and printing continuously automatically from real-time control microcomputer to real-time control microcomputer.
The rolling of remote sensing images and freeze to realize, the remote sensing image data information and the GPS locator data information that at first will the acquisition system transmit show the image that obtains then, and position by the GPS locating information on screen.What generate because of the airborne radar display unit is the RAW format-pattern, so all images form among the present invention is all deposited with the RAW form and read.
Freeze to show that microcomputer mainly contains following several operations to freeze frame:
1. open image.This is the first step of Flame Image Process, by clicking " file/open " menu or respective selection, ejects a dialog box on the screen, and the image that the user can select a width of cloth to freeze in the past from hard disk is shown.Repeat this step repeatedly, can open multiple image.In the practical flight process, can not select this, freeze to show that microcomputer is in waiting status, when clicking after the control microcomputer freezes option in real time, current freeze frame just shows freezing to show on the microcomputer automatically.
2. area calculates.Irregular planimeter is a critical function of this part at last, no matter is the disaster real-time monitoring system, and still to the scouting in enemy position, area calculates to can be used for calculating declares figure personnel area-of-interest size, so that the overall situation is had further understanding.When the user receive freeze remote sensing images after, the testing staff presses " area calculates/delineate the zone " or the associated toolbar option, then press left mouse button and rolling mouse, the irregular area-of-interest of can irising out or draw, unclamp left mouse button then, select " area calculating/selection zone " or the associated toolbar option, in irregular area-of-interest, press left mouse button, just can calculate this region area size, and in status bar, show.This calculation of area is by the sweep trace order, calculate pixel number purpose size in the closed region, multiply by a scale-up factor (promptly how many areas a pixel represents) again and obtain the area size of this irregular area, it is that of image true area is approximate.
3. distance calculation.Distance between two points calculates with area computation method similar, and by selecting " operation/computed range " or the associated toolbar option, the user can hit left mouse button by any location point on screen; Every click once just on screen the relevant position draw a point, when clicking after twice, just calculate the distance between these 2 automatically, and in status bar, demonstrate concrete numerical value.
4. image amplifies/dwindles.When image was presented on the screen first, system default was demonstration in 1: 1.If the user wants to check the image overall picture, can select " operation/image zooming " or the associated toolbar option, can carry out convergent-divergent to current image on the screen, provided 1: 1 at present, 1: 2,1: 4,1: 8 fourth gear.
5. geographical name lettering.After freeze frame is opened, without any information of place names,, can select " operation/geographical name lettering " option, on the screen to realize the geographical name lettering function if want to check place name mark situation this moment.This function is by the latitude and longitude coordinates value in the inquiry information of place names database, judges which place name coordinate drops in the current screen display image scope, and is shown.In actual applications, the geography information in the geographical name data bank can not cover all geographic position, when testing staff's interesting target does not write down in database, just can not show on the screen.At this situation, we have increased " newly adding place name ", " deletion place name " option of operation again in freezing display routine, and it can make the user that arbitrfary point, any interesting target on the screen are carried out geographical name lettering, and demonstrate corresponding latitude and longitude coordinates value.
6. gradation of image is regulated.This function can be according to the different contrast of display, by changing gradation of image reference value size, thereby can change the display gray scale of image, and image more clearly is presented on the screen, is adapted to different display devices better.
7. print.When freeze frame need print, can click " operation/printing " menu or the associated toolbar option, freeze frame just can print with printer together with the information of place names that adds and mark on the current screen.
8. Connection Service device.In the practical flight process, freeze to show that microcomputer freezes display image in order to receive in real time from what real-time control microcomputer was sent, the user at first will be provided with " operation/Connection Service device " option, is connected with it the IP address of control microcomputer in real time by input in dialog box window.After the successful connection, control the current screen freeze frame of microcomputer in real time and just can be sent to and freeze to show microcomputer, and be kept on the hard disk in the assigned catalogue.
Freeze to show used database in the microcomputer be utilize two-dimentional relation that the ACCESS of Microsoft company sets up from database construction, carry out placename-querying, a relation is exactly the data form of a two dimension, an attribute of each row correspondent entity, wherein provide corresponding each attributes of entities value, each row forms polynary a group of being made up of multiple attribute, and is corresponding with a specific entity.All tuples must be to have nothing in common with each other in the table, and train value must be indivisible.This database have create convenient, contain much information family friendly interface, advantage such as simple to operate, powerful.
After in clicking real-time control microcomputer, freezing option, promptly sent freeze message, this message alteration sign Boolean variable in the program, be used for determining to freeze to show that the image that shows in the microcomputer is to send from real-time control microcomputer, still read from freezing to show the hard disk of microcomputer.If the image of current demonstration is to send from real-time control microcomputer, freezes then to show that microcomputer is also receivable to the gps data pointer of sending from real-time control microcomputer relevant with present image that contain, and carry out the screen coordinate location by these data; If current display image is from freezing to show that the hard disk of microcomputer reads, then in reading images, also should reading corresponding gps data file, thereby this width of cloth image is carried out the screen coordinate location.
Freeze the display routine process flow diagram as shown in Figure 3:
This flowchart text is as follows: freeze after the display routine operation, if receive current screen image of interest and the gps data sent from the control microcomputer in real time, then server ip address should be set at first, connect the control microcomputer, corresponding information shows in the status bar of control microcomputer; If the image of depositing is carried out subsequent treatment, then need not connect the control microcomputer, directly from hard disk, read freeze frame.No matter take any mode, after freeze frame is opened, with carrying out multi-mode operations such as convergent-divergent, area/distance calculation, geographical name lettering/deletion, printing, gray scale adjusting to freeze frame per family.The concrete operations mode is the same with common Windows use software.
Flight path shows that microcomputer mainly contains following several operations:
1. click the parameter setting, eject a property pages dialog box, the user can set the upper left corner of used map and lower right corner latitude and longitude information in advance, control the length and width size (unit: pixel) of microcomputer IP address and electronic chart in real time.
2. click and spread out the map, eject a dialog box, the user reads used electronic chart the corresponding catalogue file from hard disk, and is kept in the internal memory.When practical flight, only receive the gps data of sending from aircraft, map just displays on screen, wherein the full figure viewing area in the upper left corner is to be that the center is shown with the aircraft, and the viewing area, work at present district of right half screen curtain is that the mid point with the workspace is that the center in whole zone is shown.
3. click the Connection Service device, after parameter setting and the operation of spreading out the map are ready, can select Connection Service device menu or the corresponding button, and control microcomputer in real time and link to each other, get ready for receiving gps data.Successful connection whether information will show in the status bar of controlling microcomputer in real time.
4. after above operation all finishes, click and follow the tracks of option, can carry out gps data and follow the tracks of, and the gps data that receives is shown in status bar in real time, the flight path and the corresponding work district scope of on screen, drawing aircraft simultaneously.
5. click the map convergent-divergent, the electronic chart size that shows on the enlarging or reducing screen, be provided with the third gear scaling at present altogether: 1: 1,1: 2,1: 4, wherein the full figure viewing area in the upper left corner was defaulted as demonstration in 1: 4, and the viewing area, work at present district of right half screen curtain is defaulted as demonstration in 1: 1.
6. flight path shows that microcomputer except that practical flight is obtained gps data, also can not link to each other with real-time control microcomputer, directly reads the gps data file from hard disk, thereby carries out the analog demenstration that flight path shows.This option generally need not in normal use.
In the design process of carrying out the flight path display routine, should note following items:
(1) when in the setting-out of full figure viewing area, the screen upper left corner, the motionless aircraft of map is moving in this zone, and when aircraft walked to this zone boundary, Automatic Program moved to this regional center to airplane icon;
(2) when in the viewing area setting-out of right half screen curtain work at present district, the moving aircraft of map is motionless in this zone, in the whole flight course of aircraft, continuous reach along with the test job district, electronic chart is translation in the opposite direction, and the mid point in test job district then is positioned at this regional center all the time.
What (3) viewing area, workspace showed is the test zone of current aircraft, should keep synchronous with the rolling remote sensing images on the real-time control computer screen, the user just can be directly acquainted with geographic position and the local topography and geomorphology that current aircraft is tested from screen, thereby makes decision in time.
Flight path display routine process flow diagram is as shown in Figure 4:
This flowchart text is as follows: flight path shows after the microcomputer operation, at first should set the upper left corner of used map and lower right corner latitude and longitude information, control the length and width size (unit: pixel) of microcomputer IP address and electronic chart in real time; After parameter sets, from hard disk, read corresponding electronic map file, be put in the internal memory; Connect the control microcomputer then, corresponding information shows in the status bar of control microcomputer; After more than operation is finished, follow the tracks of execution, when the control microcomputer has gps data to send, electronic chart shows just expansion automatically in the microcomputer at flight path, carrying out gps data follows the tracks of, and the gps data that receives shown in status bar in real time, the flight path and the corresponding work district scope of on screen, drawing aircraft simultaneously, the user can carry out map convergent-divergent, the track that clears screen, drag operation such as map this moment.
Synthetic-aperture radar real-time ground disposal route can be used for fields such as real-time disaster monitoring, environmental monitoring and Military Application.Compare with original system, this system has following advantages:
(1) control device in this system makes data transmission rate improve nearly one times, and can select the high speed processing chip for use by adopting Synchronous Transfer Mode, and data transmission rate is further improved.
(2) this floor treatment method is based on the Wlndows platform design, therefore can use microcomputer to handle, and is simple to operate, highly versatile.
(3) both available network transmission of this floor treatment method, also the available hardware control device transmits, and makes the user have wider selectivity.
(4) this system utilizes GPS (GPS) and Geographic Information System (GIS) to carry out seven processing in real time, and with high content of technology, processing speed is fast, accurate positioning.
(5) this floor treatment method can organically combine workstation and microcomputer, can carry out multi-job operation and post analysis process, high efficiency.
Native system also has following characteristics in concrete use:
(1) this system can carry out seven real-time processing simultaneously, also can carry out wherein several real-time processing as required;
(2) if change the relevant controlling chip of control device, processing speed and peripheral hardware (comprising computing machine, printer and workstation) speed is improved greatly, can handle the diameter radar image that resolution is higher than 3 meters in real time;
(3) if suitably revise the process software of this system, this system also can be used for optics (comprising visible light, infrared ray) video and other remote sensing images;
(4) if suitably revise the receiving equipment and relevant software of front end, this system also can be used for the ground real-time processing method of aircraft-ground (machine-ground) transmission and related network transmission.
Do specific descriptions below in conjunction with 1～4 pair of principle of work of the present invention of accompanying drawing and performance:
Description of drawings
Fig. 1 synthetic aperture imaging radar real-time ground disposal route structural representation;
Fig. 2 a, Fig. 2 b synthetic aperture imaging radar real-time ground disposal route control microcomputer process flow diagram;
Fig. 3 a, Fig. 3 b, Fig. 3 c synthetic aperture imaging radar real-time ground disposal route are freezed the display routine process flow diagram;
Fig. 4 synthetic aperture imaging radar real-time ground disposal route flight path display routine process flow diagram.
Embodiment
Embodiment 1:
At first the each several part Digital ID is described as follows among Fig. 1:
1-satellite 2-satellite link 3-antenna
4-cable one 5-low-converter 6-cable two
7-detuner 8-cable three 9-front ends receive microcomputer in real time
10-cable four 11-control microcomputer 12-cable five in real time
13-workstation1 4-cable six 15-print microcomputer
16-cable seven 17-flight paths show microcomputer 18-cable eight
19-freezes to show microcomputer
The course of work of the present invention is: satellite 1 forward signal that receives by antenna 3 through amplification, after the frequency conversion, deliver to detuner 7 and carry out demodulation, the base band data of detuner 7 outputs is delivered to real-time reception microcomputer 9 and is decrypted and data processing, the data of handling well are given control microcomputer 11 by network, and control microcomputer 11 transmits data to workstation1 3.After workstation1 3 is received data, except that showing in real time in this locality and depositing in real time, also data are given other workstation, handle accordingly.In remote sensing images following times not, receive in real time microcomputer 9, in real time control microcomputer 11, print microcomputer 15, flight path shows microcomputer 17, freezes to show that microcomputer 19 is in waiting status respectively, and be connected with real-time control microcomputer 11 separately, wherein flight path demonstration microcomputer 17 will be opened corresponding electronic chart and be ready.After remote sensing images get off, receive microcomputer 9 received signal and roll display image on one side in real time, on one side image and corresponding GPS information are mail to real-time control microcomputer 11; Control microcomputer 11 receives the view data of being sent by real-time reception microcomputer 9 on one side in real time, image is rolled on screen, on one side according to the corresponding geographical name data bank of receiving of GPS information inquiry, on the image that rolls, show relevant place name, meanwhile, control microcomputer 11 in real time and also will mail to flight path demonstration microcomputer 17 to the current GPS information that receives; Flight path shows that microcomputer is according to the gps data that receives, draw the track and the corresponding work district of fly past on electronic chart, electronic chart is boarded a plane, and current rolling image region should be consistent on the work at present district that surveyed and control microcomputer 11 screens in real time; Controlling microcomputer 11 in real time when flight path shows that microcomputer 17 sends gps datas, also send remote sensing image data to printing microcomputer 15, after printing microcomputer and receiving view data, on one side on screen the display scrolling image, on one side by printer print image in real time; Controlling in the process of microcomputer 11 display scrolling images in real time, when when interested in a certain width of cloth remote sensing images, clicking in real time, control microcomputer 11 freezes option, then controlling microcomputer 11 current screen images in real time just is sent to and freezes to show microcomputer 19 and show, this current screen image is also deposited with corresponding form with relevant gps data and is freezed to show under the assigned catalogue of microcomputer 19 hard disks simultaneously, in order to calling at any time.After having freezed image of interest, just can carry out various operations on the microcomputer 19 freezing to show.
Embodiment 2:
In real time control microcomputer 11 is responsible for monitoring the request that each client computer connects, for each user promptly receives microcomputer 9, workstation1 3 in real time, prints microcomputer 15, flight path shows microcomputer 17, freeze to show that microcomputer 19 sets up network and connect.Be connected by setting up network with real-time reception microcomputer 9, view data and GPS information after control microcomputer 11 can obtain to decompress in real time, the roll display image is also inquired about the corresponding geographical information database system, carry out real-time geographic information annotation, and finish extraction to interesting target zone in the real-time Transmission image, and send it to and freeze to show that microcomputer 19 handles, the interesting target zone of extraction is equivalent to the scope of display one screen.Control microcomputer 11 at different user, provides its requested service difference as the side that service is provided in real time.For workstation1 3, transmit pictorial data and gps data to it; For printing microcomputer 15, transmit pictorial data to it; Show microcomputer 17 for flight path, transmit gps data to it; For freezing to show microcomputer 19, transmit the pictorial data and the gps data in the interesting target zone of extracting to it.In the total system course of work, control the connection status that microcomputer 11 is constantly inquired about each client computer all the time in real time, in case client computer is had no progeny in connecting, control microcomputer 11 in real time and can handle new connection request, and continue as it corresponding service is provided.
Print microcomputer 15 and at first will send connection request, after network connects foundation, print microcomputer 15 and just can obtain view data, and carry out real-time roll display and printing continuously automatically from real-time control microcomputer 11 to real-time control microcomputer 11.
Embodiment 3:
The rolling of remote sensing images and freeze to realize, the remote sensing image data information and the GPS locator data information that at first will the acquisition system transmit show the image that obtains then, and position by the GPS locating information on screen.What generate because of the airborne radar display unit is the RAW format-pattern, so all images form among the present invention is all deposited with the RAW form and read.
Freezing display routine is an application program (MDl) that is based upon on many documents framework, and promptly same at any one time screen can show a plurality of windows, and the user of service can check multiple image simultaneously like this, helps the contrast between the different images.
Freeze to show that microcomputer mainly contains following several operations to freeze frame:
1. open image.This is the first step of Flame Image Process, by clicking " file/open " menu or respective selection, ejects a dialog box on the screen, and the image that the user can select a width of cloth to freeze in the past from hard disk is shown.Repeat this step repeatedly, can open multiple image.In the practical flight process, can not select this, freeze to show that microcomputer is in waiting status, when clicking after control microcomputer 11 freezes option in real time, current freeze frame just shows freezing to show on the microcomputer automatically.
2. area calculates.Irregular planimeter is a critical function of this part at last, no matter is the disaster real-time monitoring system, and still to the scouting in enemy position, area calculates to can be used for calculating declares figure personnel area-of-interest size, so that the overall situation is had further understanding.When the user receive freeze remote sensing images after, the testing staff presses " area calculates/delineate the zone " or the associated toolbar option, then press left mouse button and rolling mouse, the irregular area-of-interest of can irising out or draw, unclamp left mouse button then, select " area calculating/selection zone " or the associated toolbar option, in irregular area-of-interest, press left mouse button, just can calculate this region area size, and in status bar, show.This calculation of area is by the sweep trace order, calculate pixel number purpose size in the closed region, multiply by a scale-up factor (promptly how many areas a pixel represents) again and obtain the area size of this irregular area, it is that of image true area is approximate.
3. distance calculation.Distance between two points calculates with area computation method similar, by selecting " operation/computed range " or the associated toolbar option, the user can hit left mouse button by any location point on screen, every click once just on screen the relevant position draw a point, when clicking after twice, program just calculates the distance between these 2 automatically, and demonstrates concrete numerical value in status bar.
4. image amplifies/dwindles.When image was presented on the screen first, system default was demonstration in 1: 1.If the user wants to check the image overall picture, can select " operation/image zooming " or the associated toolbar option, can carry out convergent-divergent to current image on the screen, provided 1: 1 at present, 1: 2,1: 4,1: 8 fourth gear.
5. geographical name lettering.After freeze frame is opened, without any information of place names,, can select " operation/geographical name lettering " option, on the screen to realize the geographical name lettering function if want to check place name mark situation this moment.This function is by the latitude and longitude coordinates value in the inquiry information of place names database, judges which place name coordinate drops in the current screen display image scope, and is shown.In actual applications, the geography information in the geographical name data bank can not cover all geographic position, when testing staff's interesting target does not write down in database, just can not show on the screen.At this situation, we have increased " newly adding place name ", " deletion place name " option of operation again in freezing display routine, and it can make the user that arbitrfary point, any interesting target on the screen are carried out geographical name lettering, and demonstrate corresponding latitude and longitude coordinates value.
6. gradation of image is regulated.This function can be according to the different contrast of display, by changing gradation of image reference value size, thereby can change the display gray scale of image, and image more clearly is presented on the screen, is adapted to different display devices better.
7. print.When freeze frame need print, can click " operation/printing " menu or the associated toolbar option, freeze frame just can print with printer together with the information of place names that adds and mark on the current screen.
8. Connection Service device.In the practical flight process, freeze to show that microcomputer 19 freezes display image in order to receive in real time from what real-time control microcomputer 11 was sent, the user at first will be provided with " operation/Connection Service device " option, is connected with it by the IP address of input control microcomputer (server) 11 in dialog box window is next.After the successful connection, control microcomputer 11 current screen freeze frames in real time and just can be sent to and freeze to show microcomputer 19, and be kept on the hard disk in the assigned catalogue.
Freeze to show used database in the microcomputer 19 be utilize two-dimentional relation that the ACCESS of Microsoft company sets up from database construction, carry out placename-querying, a relation is exactly the data form of a two dimension, an attribute of each row correspondent entity, wherein provide corresponding each attributes of entities value, each row forms polynary a group of being made up of multiple attribute, and is corresponding with a specific entity.All tuples must be to have nothing in common with each other in the table, and train value must be indivisible.This database have create convenient, contain much information family friendly interface, advantage such as simple to operate, powerful.
After in clicking real-time control microcomputer 11, freezing option, promptly sent freeze message, this message alteration sign Boolean variable in the program, be used for determining freezing to show that the image that shows in the microcomputer 19 is to send from real-time control microcomputer 11, still read from freezing to show microcomputer 19 hard disks.If the image of current demonstration is to send from real-time control microcomputer 11, freezes then to show that microcomputer 19 is also receivable to the gps data pointer of sending from real-time control microcomputer 11 relevant with present image that contain, and carry out the screen coordinate location by these data; If current display image is from freezing to show that the hard disk of microcomputer 19 reads, then in reading images, also should reading corresponding gps data file, thereby this width of cloth image is carried out the screen coordinate location.
Embodiment 4:
The flight path display part is a single document (SDl) application program, is requisite ingredient in the native system.This program screen window can be divided into three parts: full figure viewing area, viewing area, work at present district, option of operation zone.
Flight path shows that microcomputer mainly contains following several operations:
1. click the parameter setting, eject a property pages dialog box, the user can set the upper left corner of used map and lower right corner latitude and longitude information in advance, control the length and width size (unit: pixel) of microcomputer 11IP address and electronic chart in real time.
2. click and spread out the map, eject a dialog box, the user reads used electronic chart the corresponding catalogue file from hard disk, and is kept in the internal memory.When practical flight, only receive the gps data of sending from aircraft, map just displays on screen, wherein the full figure viewing area in the upper left corner is to be that the center is shown with the aircraft, and the viewing area, work at present district of right half screen curtain is that the mid point with the workspace is that the center in whole zone is shown.
3. click the Connection Service device, after parameter setting and the operation of spreading out the map are ready, can select Connection Service device menu or the corresponding button, and control microcomputer 11 in real time and link to each other, get ready for receiving gps data.Successful connection whether information will show in the status bar of controlling microcomputer 11 in real time.
4. after above operation all finishes, click and follow the tracks of option, can carry out gps data and follow the tracks of, and the gps data that receives is shown in status bar in real time, the flight path and the corresponding work district scope of on screen, drawing aircraft simultaneously.
5. click the map convergent-divergent, the electronic chart size that shows on the enlarging or reducing screen, be provided with the third gear scaling at present altogether: 1: 1,1: 2,1: 4, wherein the full figure viewing area in the upper left corner was defaulted as demonstration in 1: 4, and the viewing area, work at present district of right half screen curtain is defaulted as demonstration in 1: 1.
6. flight path shows that microcomputer except that practical flight is obtained gps data, also can not link to each other with real-time control microcomputer 11, directly reads the gps data file from hard disk, thereby carries out the analog demenstration that flight path shows.This option generally need not in normal use.
In the design process of carrying out the flight path demonstration, should note following items:
(1) when in the setting-out of full figure viewing area, the screen upper left corner, the motionless aircraft of map is moving in this zone, and when aircraft walked to this zone boundary, system moved to this regional center to airplane icon automatically;
(2) when in the viewing area setting-out of right half screen curtain work at present district, the moving aircraft of map is motionless in this zone, in the whole flight course of aircraft, continuous reach along with the test job district, electronic chart is translation in the opposite direction, and the mid point in test job district then is positioned at this regional center all the time.
What (3) viewing area, workspace showed is the test zone of current aircraft, should keep synchronous with the rolling remote sensing images on control microcomputer (server) 11 screens, the user just can be directly acquainted with geographic position and the local topography and geomorphology that current aircraft is tested from screen, thereby makes decision in time.
Claims (4)
1, synthetic aperture imaging radar real-time ground disposal route, it is characterized in that by an antenna, a low-converter, a detuner, one receives microcomputer in real time, control microcomputer in real time for one, a workstation, a printing microcomputer, a flight path shows microcomputer, one is freezed to show microcomputer and eight respective electrical cables compositions, wherein antenna is connected by cable one with low-converter, low-converter is connected by cable two with detuner, detuner is connected by cable three with the real-time microcomputer that receives, receiving microcomputer in real time is connected by cable four with real-time control microcomputer, control microcomputer and workstation in real time, print microcomputer, flight path shows microcomputer, freeze to show that microcomputer is respectively by cable five, cable six, cable seven, cable eight connects, amplify by the satellite forward signal process that antenna receives, after the frequency conversion, deliver to detuner and carry out demodulation, the base band data of detuner output is delivered to real-time reception microcomputer and is decrypted and data processing, the data of handling well are given the control microcomputer by network, the control microcomputer transmits data to workstation, after workstation is received data, except that showing in real time in this locality and depositing in real time, also data are given other workstation, handle accordingly; In remote sensing images following times not, receive in real time microcomputer, in real time control microcomputer, print microcomputer, flight path shows microcomputer, freezes to show that microcomputer is in waiting status respectively, and be connected with real-time control microcomputer separately, wherein flight path demonstration microcomputer will be opened corresponding electronic chart and be ready; After remote sensing images get off, receive microcomputer received signal and roll display image on one side in real time, on one side image and corresponding GPS information are mail to real-time control microcomputer; The control microcomputer receives the view data of being sent by real-time reception microcomputer on one side in real time, image is rolled on screen, on one side according to the corresponding geographical name data bank of receiving of GPS information inquiry, on the image that rolls, show relevant place name, meanwhile, control microcomputer in real time and also the current GPS information that receives is mail to flight path demonstration microcomputer; Flight path shows microcomputer according to the gps data that receives, the track and the corresponding work district that on electronic chart, draw fly past, and electronic chart is boarded a plane, and current rolling image region should be consistent on the work at present district that surveyed and the control computer screen in real time; When flight path shows that microcomputer sends gps data in real time, also send remote sensing image data at the control microcomputer to printing microcomputer, after printing microcomputer and receiving view data, on one side on screen the display scrolling image, on one side by printer print image in real time; Controlling in the process of microcomputer display scrolling image in real time, when when interested in a certain width of cloth remote sensing images, can click real-time control microcomputer and freeze option, then controlling the current screen image of microcomputer in real time just is sent to and freezes to show microcomputer and show, this current screen image is also deposited with corresponding form with relevant gps data and is freezed to show under the assigned catalogue of hard disk of microcomputer simultaneously, in order to calling at any time; After having freezed image of interest, just carry out various operations on the microcomputer freezing to show.
2, by the described synthetic aperture imaging radar real-time ground of claim 1 disposal route, it is characterized in that controlling microcomputer at first before SAR image is also not following, this control microcomputor program of operation earlier, and set corresponding IP address, wait for that front end receives the connection of microcomputer; After secondly current termination receipts microcomputer connects, corresponding prompt information is presented in the status bar of control microcomputer, other client computer is linked to each other with the control microcomputer, and the control microcomputer just can be collected remote sensing images and gps data by the past termination receipts microcomputer, and they are mail to corresponding client computer in real time.
3, by the described synthetic aperture imaging radar real-time ground of claim 1 disposal route, it is characterized in that freezing to show when microcomputer links to each other with the control microcomputer, can receive current screen image of interest and the gps data sent from the control microcomputer in real time.
4, by the described synthetic aperture imaging radar real-time ground of claim 1 disposal route, it is characterized in that flight path shows that microcomputer at first sets the upper left corner of used map and lower right corner latitude and longitude information, controls the length and width size of microcomputer IP address and electronic chart in real time; After parameter sets, read corresponding electronic map file from hard disk, be put in the internal memory: when connecting the control microcomputer, corresponding information shows in the status bar of control microcomputer; When the control microcomputer has gps data to send, electronic chart shows just expansion automatically in the microcomputer at flight path, carrying out gps data follows the tracks of, and a gps data that receives shows in status bar in real time, the flight path and the corresponding work district scope of drawing aircraft simultaneously on screen, the user can carry out map convergent-divergent, the track that clears screen, drag map operation this moment.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB001249290A CN1156710C (en) | 2000-09-25 | 2000-09-25 | Real-time ground processing system for synthetic aperture imaging radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB001249290A CN1156710C (en) | 2000-09-25 | 2000-09-25 | Real-time ground processing system for synthetic aperture imaging radar |
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| CN1346059A CN1346059A (en) | 2002-04-24 |
| CN1156710C true CN1156710C (en) | 2004-07-07 |
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| CNB001249290A Expired - Fee Related CN1156710C (en) | 2000-09-25 | 2000-09-25 | Real-time ground processing system for synthetic aperture imaging radar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327242C (en) * | 2004-07-26 | 2007-07-18 | 电子科技大学 | Method for compensating relative motion of mobile multiple objective for reverse synthetic aperture radar |
| CN100386646C (en) * | 2005-01-18 | 2008-05-07 | 中国科学院电子学研究所 | Method for processing airborne interference SAR interferogram shadow |
| CN100386647C (en) * | 2005-01-25 | 2008-05-07 | 中国科学院电子学研究所 | Airborne interference SAR system and method based on POS |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365429C (en) * | 2004-11-05 | 2008-01-30 | 清华大学 | Synthetic aperture radar moving target imaging method |
| CN1329743C (en) * | 2005-05-10 | 2007-08-01 | 中国科学院电子学研究所 | Combined measuring device using machine interference synthetic aperture radar base line |
| GB201207967D0 (en) | 2012-05-08 | 2012-06-20 | Secr Defence | Synthetic aperture radar system |
| CN108073581B (en) * | 2016-11-08 | 2021-12-07 | 北京国双科技有限公司 | Map area name display method and device |
| CN107197217B (en) * | 2017-04-19 | 2020-08-14 | 西安空间无线电技术研究所 | Satellite high-frame-frequency image data real-time slicing transmission method |
| CN108200415A (en) * | 2018-03-16 | 2018-06-22 | 广州成至智能机器科技有限公司 | Unmanned plane image frame processing system and its method based on augmented reality |
| CN113933842A (en) * | 2021-12-21 | 2022-01-14 | 南京天朗防务科技有限公司 | SAR image rapid interactive display method and electronic device |
| CN114089339B (en) * | 2022-01-14 | 2022-04-19 | 南京天朗防务科技有限公司 | Real-time processing and displaying system and method for unmanned aerial vehicle-mounted SAR image |
-
2000
- 2000-09-25 CN CNB001249290A patent/CN1156710C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327242C (en) * | 2004-07-26 | 2007-07-18 | 电子科技大学 | Method for compensating relative motion of mobile multiple objective for reverse synthetic aperture radar |
| CN100386646C (en) * | 2005-01-18 | 2008-05-07 | 中国科学院电子学研究所 | Method for processing airborne interference SAR interferogram shadow |
| CN100386647C (en) * | 2005-01-25 | 2008-05-07 | 中国科学院电子学研究所 | Airborne interference SAR system and method based on POS |
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| Publication number | Publication date |
|---|---|
| CN1346059A (en) | 2002-04-24 |
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