CN103167287B - Selective receiving method based on remote sensing image data broadcast and distribution of spatial position - Google Patents
Selective receiving method based on remote sensing image data broadcast and distribution of spatial position Download PDFInfo
- Publication number
- CN103167287B CN103167287B CN201310066055.8A CN201310066055A CN103167287B CN 103167287 B CN103167287 B CN 103167287B CN 201310066055 A CN201310066055 A CN 201310066055A CN 103167287 B CN103167287 B CN 103167287B
- Authority
- CN
- China
- Prior art keywords
- subdivision
- image
- geosot
- receiving terminal
- remote sensing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a selective receiving method based on remote sensing image data broadcast and distribution of a spatial position and belongs to the technical field of terrestrial space information organization, geographic information system, remote sensing and communication. The method comprises a first step of setting a size of a geographical coordinate global subdivision based on one-dimension-integer and two to n-th power (GeoSOT) grid used for subdividing a remote sensing image, a second step of subdividing a to-be-transmitted image into a plurality of image blocks through the determined GeoSOT grid and each image block corresponding to one subdivision patch, a third step of encoding each subdivision patch through a GeoSOT encoding method and obtaining an image code, a fourth step of combining the image block and the corresponding image code into a data segment, packaging into a broadcast data package and conducting broadcast and distribution, and a fifth step of comparing a position mark used by a receiving end with the image code from a high position to a low position successively, obtaining the broadcast data package if all the corresponding positions of the position mark and the image code are the same, and abandoning the broadcast data package if not. The method is suitable for selective receiving of a broad communication system to remote sensing image data.
Description
Technical field
The present invention relates to geospatial information tissue, GIS-Geographic Information System and remote sensing, communication technical field, be specifically related to a kind of data selection method of reseptance for broadcast communication system.
Background technology
Current, along with the continuous lifting of the enriching constantly of earth observation means, spatial information acquisition capability, the spatial data extreme enrichment that people obtain, the abundant fast development along with data, services of data.In spatial Information Service pattern, the distribution services of remotely-sensed data is one of very important content.
Broadcast refers to carries out transfer of data by electromagnetic wave signal to the receiving terminal in a region, information only transmits in one direction, only have transmitting terminal to send information to receiving terminal, receiving terminal does not send any information to transmitting terminal, and transmitting terminal is all the same to the information that all receiving terminals transmit.Broadcast has important value on Data dissemination, particularly when processing the situation of many receiving terminals request identical information, broadcast communication system embodies huge advantage, but when the demand data of receiving terminal is different, existing broadcast system mainly adopts following two kinds of modes to realize the personalized data distribution of receiving terminal:
Mode one, as shown in Figure 1, a step encryption mechanism is introduced between source coding and channel coding, and different receiving terminal, arrange different decryption mechanisms, because the decryption mechanisms of receiving terminal is fixed, therefore receiving terminal can only receive the data meeting oneself decryption mechanisms, when the selectivity that mode one is applied to image data receives, due to decryption mechanisms cannot be changed real-time dynamicly, this selectivity receive mode is seemed underaction.
Mode one, as shown in Figure 1, a step encryption mechanism is introduced between source coding and channel coding, and different receiving terminal, arrange different decryption mechanisms, because the decryption mechanisms of receiving terminal is fixed, therefore receiving terminal can only receive the data meeting oneself decryption mechanisms, therefore, when the selectivity that mode one is applied to image data receives, due to decryption mechanisms cannot be changed real-time dynamicly, this selectivity receive mode is seemed underaction.
Mode two, adopt the mode of IP over DVB, be different receiving terminal and give different IP addresses, individuation data handbag headband for different receiving terminal has the IP of this receiving terminal, only have this receiving terminal can receive this packet, this mode is also a kind of relatively-stationary, irrelevant with locus mode, but in spatial Information Service, receiving terminal often only needs the data relevant to its geographical position, and the mode of IP over DVB is difficult to the requirement of meeting spatial header length.
Analysis is carried out for above two kinds of modes can find out, the encryption mechanism of mode one and the IP address of mode two all cannot achieve a butt joint the dynamic tracking in receiving end geographical position, therefore for data distributing broadcasting system design based on locus dynamic, flexibly selectivity method of reseptance there is important practical significance and higher feasibility.
Summary of the invention
In order to solve the problem, the invention provides a kind of selectivity method of reseptance of the remote sensing image data broadcast distribution based on locus, object receives in order to the remote sensing image data realized in receiving terminal pair and its geographical position relevant range; And can real-time tracking receiving terminal geographical position, receive remote sensing image data flexibly.
For achieving the above object, technical scheme of the present invention is: based on the selectivity method of reseptance of the remote sensing image data broadcast distribution of locus, comprise the steps:
Step one: set and the GeoSOT sizing grid that subdivision uses is carried out to remote sensing image;
Step 2: with step one determined GeoSOT grid, subdivision is carried out to image to be transmitted, obtain multiple image blocks; The corresponding subdivision dough sheet of each image blocks;
Step 3: the method utilizing GeoSOT to encode is encoded to each subdivision dough sheet obtained by step 2, obtains the image coding of the corresponding image blocks of each subdivision dough sheet;
Step 4: image blocks corresponding for subdivision dough sheet and image coding are combined into data segment, uses broadcast data packet packaging method to pack to described data segment, obtains broadcast data packet, and carry out broadcast distribution to broadcast data packet;
Step 5: receiving terminal uses the GeoSOT coding of self space position as station location marker, and use location mark is compared to low level by a high position by turn with image coding, if station location marker is different with a certain position of image coding, then gives up this broadcast data packet; If station location marker is identical with each corresponding position of coding, then obtain this broadcast data packet.
Further, in step one, the method set remote sensing image carries out the GeoSOT sizing grid that subdivision uses is:
According to the GeoSOT sizing grid that the receiving ability determination subdivision of receiving terminal uses.
Further, the receiving ability of above-mentioned receiving terminal is the geographic influence scope of receiving terminal, determines its geographic influence scope α with receiving terminal type, and by α compared with the yardstick of 32 grades of GeoSOT grids, finds the minimum GeoSOT grid being not less than α.
Further, in step 5, if station location marker is identical with each corresponding position of coding, be divided into following three kinds of situations:
1) each corresponding position of station location marker and image coding is identical, and station location marker length is less than image coding length, then within knowing that described broadcast data wraps in receiving terminal position relevant range;
2) each corresponding position of station location marker and image coding is identical, and station location marker length is greater than image coding length, then know that described receiving terminal is within the broadcasting area of this broadcast data packet;
3) each corresponding position of station location marker and image coding is identical, and station location marker length equals image coding length, then know that described broadcast data packet is relevant to receiving terminal position.
Preferably, in step 5 to the defining method of the station location marker of receiving terminal be:
Determine the geographical position of receiving terminal, suppose that in step one, residing for determined GeoSOT grid, level is m, then the GeoSOT grid of the m level residing for the geographical position of receiving terminal is encoded, obtain receiving terminal station location marker.
Preferably, step 2 is:
Step 201, its minimum outsourcing longitude and latitude rectangle of longitude and latitude range computation according to image to be transmitted;
Step 202, determine the minimum outsourcing subdivision rectangle comprising described minimum outsourcing longitude and latitude rectangle; Described minimum outsourcing subdivision rectangle is for unit with determined GeoSOT grid;
Step 203, determine the GeoSOT subdivision dough sheet collection that described minimum outsourcing subdivision rectangle comprises;
Step 204, for subdivision dough sheet collection, calculate the pixel coordinate scope of each subdivision dough sheet in image one by one, obtain the image blocks that each subdivision dough sheet is corresponding.
Preferably, described step 3 is:
Step 301, the longitude N determining the location angle point of subdivision dough sheet and latitude E; Make i=1, m value is the level of used GeoSOT grid; N=N, e=E;
Step 302, judge whether i is less than or equal to m, if so, then perform step 303, otherwise, perform step 304;
Step 303, calculate subdivision dough sheet at the one dimension binary coding X of i-th layer
iy
i:
X
i＝n÷2
m-i(1)
Y
i＝e÷2
m-i(2)
The remainder assignment of formula (1) is n, and the remainder assignment of formula (2) is e, making i from increasing 1, returning step 302;
Step 304, by subdivision dough sheet 1 to the one dimension binary coding X of m layer
1y
1~ X
my
msequential combination, obtains the one dimension binary coding of this subdivision dough sheet.
Beneficial effect:
1, a kind of selectivity method of reseptance of the remote sensing image data broadcast distribution based on locus provided by the present invention, suitable GeoSOT subdivision grid is selected to carry out subdivision and encode for remote sensing image, achieve the combination of geography information and remote sensing image data, and corresponding station location marker is set at receiving terminal, the remote sensing image data achieved in receiving terminal pair and its geographical position relevant range optionally receives;
2, the selectivity method of reseptance designed by this method can follow the tracks of the geographical position of receiving terminal real-time dynamicly, thus realize carrying out selectivity reception according to the territorial scope residing for receiving terminal to remote sensing image data flexibly, achieve the high-efficiency transfer of remote sensing image, there is important practical significance.
Accompanying drawing explanation
Fig. 1 is existing broadcast system encryption mechanism schematic diagram.
Fig. 2 is for carrying out the schematic diagram of remote sensing image subdivision based on certain grade of GeoSOT grid.
Fig. 3 is the remote sensing image coding product process based on GeoSOT coding.
Fig. 4 is the selectivity reception flow chart that receiving terminal carries out broadcast data packet.
Embodiment
That states for making the object, technical solutions and advantages of the present invention clearly understands, below in conjunction with instantiation, elaborates to the specific embodiment of the present invention.
The selectivity method of reseptance of the remote sensing image data broadcast distribution based on locus of the present invention is based on GeoSOT subdivision and encoding scheme, the patent application that the program proposes see Peking University: " a kind of method unifying existing longitude and latitude subdivision grid " (publication number is CN102609525, the applying date is on February 10th, 2012), the patent application disclose a kind of GeoSOT geographic grid design, for solving global geographic uniformly subdivision and identified problems.The program adopts full quaternary tree recurrence subdivision, 32 grades of subdivisions have been carried out altogether from the whole world to Centimeter Level in earth surface space, each GeoSOT subdivision level all has the GeoSOT subdivision grid of its corresponding size, and the area ratio between the upper and lower level of GeoSOT subdivision grid is 1/4.
GeoSOT subdivision system is in table 1, and table 1 gives each and cuts open hierarchical GeoSOT sizing grid:
Table 1GeoSOT grid list
GeoSOT coding is encoded to GeoSOT grid, its one dimension binary coded form all adopts 2 bits to encode to the GeoSOT grid in each GeoSOT level, and therefore encoding, this GeoSOT level residing for GeoSOT grid longer is higher, GeoSOT grid is thinner.This shows, GeoSOT code length can imply GeoSOT level.Because GeoSOT level has 32 grades, therefore the one dimension binary coding of GeoSOT coding is the longest 64.
GeoSOT coding provides five kinds of coded systems, is the operation making coding be suitable for computer, 64 one dimension binary codings during the present embodiment selects GeoSOT to encode.
Use GeoSOT mesh generation and encoding scheme is transmitted remote sensing image to be transmitted and selectivity receive step as follows:
Step one, set and the GeoSOT sizing grid that subdivision uses is carried out to remote sensing image; With this GeoSOT grid, subdivision is carried out to remote sensing image;
For the GeoSOT grid that subdivision uses, its size should be moderate.
For reaching better effect, the image blocks obtained after enabling subdivision agrees with the geographic influence scope of receiving terminal, the GeoSOT sizing grid that can use according to the receiving ability determination subdivision of receiving terminal.
The geographic influence scope of receiving terminal determines its receiving ability, and such as receiving terminal is fixed-line subscriber, then use 16 meters of (equator) grids; Receiving terminal is that vehicle-mounted user then uses 1 milimeter grid, and namely the geographic influence scope of receiving terminal is larger, larger, the determined GeoSOT grid of its receiving ability is larger.
Determine its geographic influence scope α with receiving terminal type, and by α compared with the yardstick of 32 grades of GeoSOT grids, find the minimum GeoSOT grid place level being not less than α, be the subdivision level m that this DBMS bag divides this remote sensing image.
Step 2, with the GeoSOT grid of m level, subdivision is carried out to image to be transmitted, obtain multiple image blocks; The corresponding subdivision dough sheet of each image blocks.
In the present embodiment, the idiographic flow of image subdivision, see Fig. 2, is divided into following four steps:
Step 201, its minimum outsourcing longitude and latitude rectangle of longitude and latitude range computation according to image to be transmitted, as shown in legend in Fig. 2 (1) square frame;
Step 202, determine the minimum outsourcing subdivision rectangle comprising described minimum outsourcing longitude and latitude rectangle.Minimum outsourcing subdivision rectangle is with the GeoSOT grid of determined level for unit, as shown in legend in Fig. 2 (2) square frame;
Step 203, determine the GeoSOT subdivision dough sheet collection that described minimum outsourcing subdivision rectangle comprises, as shown in legend in Fig. 2 (3) square frame;
Step 204, for subdivision dough sheet collection, calculate the pixel coordinate scope of each subdivision dough sheet in image one by one, obtain the image blocks that each subdivision dough sheet is corresponding.In image blocks, the rgb value of each pixel is exactly the image data of required transmission.
Step 3, the method utilizing GeoSOT to encode is encoded to each subdivision dough sheet obtained by step 1, obtains the image coding of the corresponding image blocks of each subdivision dough sheet.
GeoSOT grid coding scheme defines based on latitude and longitude coordinates space, can adopt longitude and latitude and the level calculation code of location angle point (one of them angle point of subdivision dough sheet).Fig. 3 shows coding flow process:
Step 301, the longitude N determining the location angle point of subdivision dough sheet and latitude E; Make i=1, m value is the level of determined GeoSOT grid; N=N, e=E;
Step 302, judge whether i is less than or equal to m, if so, then perform step 303, otherwise, perform step 304;
Step 303, calculate subdivision dough sheet at the one dimension binary coding X of i-th layer
iy
i:
X
i＝n÷2
m-i(1)
Y
i＝e÷2
m-i(2)
The remainder assignment of formula (1) is n, and the remainder assignment of formula (2) is e, making i from increasing 1, returning step 302;
Step 304, by subdivision dough sheet 1 to the one dimension binary coding X of m layer
1y
1~ X
my
msequential combination, obtains the one dimension binary coding of this subdivision dough sheet.
Such as, certain image is that use m=9 layer subdivision dough sheet divides, and it adopts lower left corner two dimension latitude and longitude information and subdivision level calculation code.Suppose, the lower left corner longitude and latitude of some subdivision dough sheets is (N39 °, E 116 °), then the computational process of its one dimension binary system GeoSOT coding is as follows:
Latitude the 1st grade: 39 ÷ 256=0 mores than 39
Longitude the 1st grade: 116 ÷ 256=0 mores than 116
Then this subdivision dough sheet is 00 the one dimension binary coding of the 1st layer;
Latitude the 2nd grade: 39 ÷ 128=0 mores than 39
Longitude the 2nd grade: 116 ÷ 128=0 mores than 116
Then this subdivision dough sheet is 00 the one dimension binary coding of the 2nd layer;
Latitude 3rd level: 39 ÷ 64=0 more than 39
Longitude 3rd level: 116 ÷ 64=1 more than 52
Then this subdivision dough sheet is 01 the one dimension binary coding of the 3rd layer;
Latitude the 4th grade: 39 ÷ 32=1 mores than 7
Longitude the 4th grade: 52 ÷ 32=1 mores than 20
Then this subdivision dough sheet is 11 the one dimension binary coding of the 4th layer;
Latitude the 5th grade: 7 ÷ 16=0 mores than 7
Longitude the 5th grade: 20 ÷ 16=1 mores than 4
Then this subdivision dough sheet is 01 the one dimension binary coding of the 5th layer;
Latitude the 6th grade: 7 ÷ 8=0 mores than 7
Longitude the 6th grade: 4 ÷ 8=0 mores than 4
Then this subdivision dough sheet is 00 the one dimension binary coding of the 6th layer;
Latitude the 7th grade: 7 ÷ 4=1 mores than 3
Longitude the 7th grade: 4 ÷ 4=1 mores than 0
Then this subdivision dough sheet is 11 the one dimension binary coding of the 7th layer;
Latitude the 8th grade: 3 ÷ 2=1 mores than 1
Longitude the 8th grade: 0 ÷ 2=0 mores than 0
Then this subdivision dough sheet is 10 the one dimension binary coding of the 8th layer;
Latitude the 9th grade: 1 ÷ 1=1 mores than 0
Longitude the 9th grade: 0 ÷ 1=0 mores than 0
Then this subdivision dough sheet is 10 the one dimension binary coding of the 9th layer;
By the one dimension binary coding sequential combination of this subdivision dough sheet at 1 ~ 9 layer, the one dimension binary coding obtaining this subdivision dough sheet is 000001110100111010.
Step 4, by image blocks corresponding for subdivision dough sheet and try to achieve in step 3 code set synthesis data segment, broadcast data packet packaging method is used to pack to described data segment, obtain broadcast data packet, and broadcast distribution is carried out to broadcast data packet, the coding in broadcast data packet is designated as image coding.
Step 5, receiving terminal use the GeoSOT coding of self space position as station location marker, station location marker and image coding are compared by turn, if station location marker is different with a certain position of image coding, then give up this broadcast data packet; If station location marker is identical with each corresponding position of coding, then obtain this broadcast data packet.Fig. 4 shows receiving terminal carries out selectivity reception flow process to broadcast data packet.
Wherein, according to GeoSOT subdivision and encoding scheme, GeoSOT coding is encoded to GeoSOT grid, and therefore encoding, this GeoSOT level residing for GeoSOT grid longer is higher, GeoSOT grid is thinner.Can find out that GeoSOT coding has level, therefore station location marker and image coding be compared to low level by turn by a high position, when carrying out successive appraximation, obtaining following four kinds of situations:
1) successive appraximation, station location marker is different from a certain position of image coding, then give up this broadcast data packet;
2) successive appraximation, each corresponding position of station location marker and image coding is identical, and station location marker length is less than image coding length, within illustrating that this broadcast data wraps in receiving terminal position relevant range;
3) successive appraximation, each corresponding position of station location marker and image coding is identical, and station location marker length is greater than image coding length, illustrates that receiving terminal is within the broadcasting area of this broadcast data packet;
4) successive appraximation, each corresponding position of station location marker and image coding is identical, and station location marker length equals image coding length, illustrates that receiving terminal is within the broadcasting area of this broadcast data packet.
2), 3), 4) three kinds of situations illustrate that this broadcast data packet is relevant to receiving terminal self-position, obtain this broadcast data packet, namely achieve selectivity and receive.
Such as receiving terminal station location marker is: 000001111
Image coding in broadcast data packet is: 000001110100111010
Successive appraximation, both the 9th not identical, then this broadcast data packet is uncorrelated with receiving terminal position range, and receiving terminal gives up this broadcast data packet.
Such as receiving terminal station location marker is: 000001110
Image coding in broadcast data packet is: 000001110100111010
Successive appraximation, both front 9 all identical, then this broadcast data packet is relevant to receiving terminal self-position, and receiving terminal receives this broadcast data packet.
Such as receiving terminal station location marker is: 0000011101001110101100
Image coding in broadcast data packet is: 000001110100111010
Successive appraximation, both front 18 all identical, then this broadcast data packet is relevant to receiving terminal self-position, and receiving terminal receives this broadcast data packet.
Such as receiving terminal station location marker is: 000001110100111010
Image coding in broadcast data packet is: 000001110100111010
Successive appraximation, both front 18 all identical, then to receive this broadcast data packet relevant for this broadcast data packet and receiving terminal, and receiving terminal receives this broadcast data packet.
At receiving terminal when carrying out selectivity to broadcast data packet and receiving, for reaching better effect, receiving terminal is enable to realize accurately receiving the broadcast data packet with strong points with its geographic influence scope within the scope of its geographic influence according to its geographical position, the GeoSOT level used when encoding to receiving terminal self space position, is the GeoSOT level m obtained in step one;
Known by the above description to execution mode, technical scheme of the present invention be finally prepared by the packet of broadcast communication system, Data dissemination and data unpack realization.Therefore technical scheme of the present invention can be embodied by following form:
1. think that above-mentioned Engineering Service is the computer software product of target developing, comprise broadcasting transmitting pretreatment software (deblocking, GeoSOT subdivision are encoded), packet generation and resolve software;
2. for the image data block transmission agreement based on geographical position;
3. the calculating equipment above-mentioned Software deployment or configuration formed, such as: the hand-held or portable terminal of broadcast communication etc.
Should be understood that; the foregoing is only general execution mode of the present invention; when practical application; those skilled in the art can make some adjustment according to needs to the technical program completely; such as: according to other modes space divided and encode; all the present invention explain the prerequisite of principle under, any amendment made, equivalent replacement, topical application etc., all should be included within protection scope of the present invention.
Claims (7)
1., based on the selectivity method of reseptance of the remote sensing image data broadcast distribution of locus, it is characterized in that, comprise the steps:
Step one: set and the GeoSOT sizing grid that subdivision uses is carried out to remote sensing image;
Step 2: with step one determined GeoSOT grid, subdivision is carried out to image to be transmitted, obtain multiple image blocks; The corresponding subdivision dough sheet of each image blocks;
Step 3: the method utilizing GeoSOT to encode is encoded to each subdivision dough sheet obtained by step 2, obtains the image coding of the corresponding image blocks of each subdivision dough sheet;
Step 4: image blocks corresponding for subdivision dough sheet and image coding are combined into data segment, uses broadcast data packet packaging method to pack to described data segment, obtains broadcast data packet, and carry out broadcast distribution to broadcast data packet;
Step 5: receiving terminal uses the GeoSOT coding of self space position as station location marker, and use location mark is compared to low level by a high position by turn with image coding, if station location marker is different with a certain position of image coding, then gives up this broadcast data packet; If station location marker is identical with each corresponding position of coding, then obtain this broadcast data packet.
2. as claimed in claim 1 based on the selectivity method of reseptance of the remote sensing image data broadcast distribution of locus, it is characterized in that, in described step one, the method set remote sensing image carries out the GeoSOT sizing grid that subdivision uses is:
According to the GeoSOT sizing grid that the receiving ability determination subdivision of receiving terminal uses.
3. as claimed in claim 1 based on the selectivity method of reseptance of the remote sensing image data broadcast distribution of locus, it is characterized in that, the receiving ability of described receiving terminal is the geographic influence scope of receiving terminal, its geographic influence scope α is determined with receiving terminal type, and by α compared with the yardstick of 32 grades of GeoSOT grids, find the minimum GeoSOT grid being not less than α.
4., as claimed in claim 1 based on the selectivity method of reseptance of the remote sensing image data broadcast distribution of locus, it is characterized in that, in described step 5, if station location marker is identical with each corresponding position of coding, be divided into following three kinds of situations:
1) each corresponding position of station location marker and image coding is identical, and station location marker length is less than image coding length, then within knowing that described broadcast data wraps in receiving terminal position relevant range;
2) each corresponding position of station location marker and image coding is identical, and station location marker length is greater than image coding length, then know that described receiving terminal is within the broadcasting area of this broadcast data packet;
3) each corresponding position of station location marker and image coding is identical, and station location marker length equals image coding length, then know that described broadcast data packet is relevant to receiving terminal position.
5. a kind of selectivity method of reseptance for remote sensing image data broadcast distribution as claimed in claim 1, is characterized in that, in described step 5 to the defining method of the station location marker of receiving terminal be:
Determine the geographical position of receiving terminal, suppose that in step one, residing for determined GeoSOT grid, level is m, then the GeoSOT grid of the m level residing for the geographical position of receiving terminal is encoded, obtain receiving terminal station location marker.
6. a kind of selectivity method of reseptance for remote sensing image data broadcast distribution as claimed in claim 1, it is characterized in that, described step 2 is:
Step 201, its minimum outsourcing longitude and latitude rectangle of longitude and latitude range computation according to image to be transmitted;
Step 202, determine the minimum outsourcing subdivision rectangle comprising described minimum outsourcing longitude and latitude rectangle; Described minimum outsourcing subdivision rectangle is for unit with determined GeoSOT grid;
Step 203, determine the GeoSOT subdivision dough sheet collection that described minimum outsourcing subdivision rectangle comprises;
Step 204, for subdivision dough sheet collection, calculate the pixel coordinate scope of each subdivision dough sheet in image one by one, obtain the image blocks that each subdivision dough sheet is corresponding.
7. a kind of selectivity method of reseptance for remote sensing image data broadcast distribution as claimed in claim 1, it is characterized in that, described step 3 is:
Step 301, the longitude N determining the location angle point of subdivision dough sheet and latitude E; Make i=1, m value is the level of used GeoSOT grid; N=N, e=E;
Step 302, judge whether i is less than or equal to m, if so, then perform step 303, otherwise, perform step 304;
Step 303, calculate subdivision dough sheet at the one dimension binary coding XiYi of i-th layer:
X
i＝n÷2
m-i(1)
Y
i＝e÷2
m-i(2)
The remainder assignment of formula (1) is n, and the remainder assignment of formula (2) is e, making i from increasing 1, returning step 302;
Step 304, by subdivision dough sheet 1 to the one dimension binary coding X of m layer
1y
1~ X
my
msequential combination, obtains the one dimension binary coding of this subdivision dough sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310066055.8A CN103167287B (en) | 2013-03-01 | 2013-03-01 | Selective receiving method based on remote sensing image data broadcast and distribution of spatial position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310066055.8A CN103167287B (en) | 2013-03-01 | 2013-03-01 | Selective receiving method based on remote sensing image data broadcast and distribution of spatial position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103167287A CN103167287A (en) | 2013-06-19 |
| CN103167287B true CN103167287B (en) | 2015-03-18 |
Family
ID=48589996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310066055.8A Active CN103167287B (en) | 2013-03-01 | 2013-03-01 | Selective receiving method based on remote sensing image data broadcast and distribution of spatial position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103167287B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911294B (en) * | 2017-11-22 | 2020-09-29 | 武汉兆格信息技术有限公司 | Cooperative plotting message routing forwarding and processing method based on earth surface block |
| CN110070590A (en) * | 2018-01-23 | 2019-07-30 | 北京云游九州空间科技有限公司 | A kind of remote sensing image storage method and device |
| CN110070599A (en) * | 2018-01-23 | 2019-07-30 | 北京云游九州空间科技有限公司 | A kind of space lattice dispatching method and device |
| CN110110016B (en) * | 2018-01-23 | 2021-11-09 | 北京国星宇航科技有限公司 | Remote sensing image analysis method and device |
| CN109300072B (en) * | 2018-09-07 | 2022-09-23 | 北京大学 | Traffic infrastructure damage condition calculation method based on geographic grids |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084139A1 (en) * | 2009-01-21 | 2010-07-29 | Universiteit Gent | Geodatabase information processing |
| CN102354401A (en) * | 2011-09-22 | 2012-02-15 | 南京林业大学 | Method for coding earth surface image through dividing |
| CN102609525A (en) * | 2012-02-10 | 2012-07-25 | 北京大学 | Method for unifying existing longitude and latitude subdividing grids |
-
2013
- 2013-03-01 CN CN201310066055.8A patent/CN103167287B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084139A1 (en) * | 2009-01-21 | 2010-07-29 | Universiteit Gent | Geodatabase information processing |
| CN102354401A (en) * | 2011-09-22 | 2012-02-15 | 南京林业大学 | Method for coding earth surface image through dividing |
| CN102609525A (en) * | 2012-02-10 | 2012-07-25 | 北京大学 | Method for unifying existing longitude and latitude subdividing grids |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103167287A (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103167287B (en) | Selective receiving method based on remote sensing image data broadcast and distribution of spatial position | |
| CN107466043B (en) | Method and equipment for determining azimuth angle of base station antenna | |
| CN103108189B (en) | Beidou remote sensing image data transmission method | |
| CN103884345B (en) | Interest point information collecting method, interest point information displaying method, interest point information collecting device, interest point information displaying device, and interest point retrieval system | |
| CN106357758B (en) | A kind of localization method, system and terminal | |
| CN114501430A (en) | Next-generation Internet of things system architecture design method and application system | |
| CN105160191B (en) | A kind of two-dimensional assemblage method and device based on spatial position | |
| CN105163318B (en) | The smart frequency spectrum being classified based on radio environment map and user manages the network architecture | |
| CN104135766B (en) | A kind of Cooperative Localization Method between wireless network based on mesh generation | |
| CN102573053A (en) | System and method for realizing hybrid positioning on cloud server | |
| CN106993291A (en) | The frequency management method and system of low-power consumption wide area network based on radio and television frequency range | |
| CN105300373A (en) | Three-dimensional coordinate conversion method and device | |
| CN104567853A (en) | Position calibration device and method based on LED visible light source | |
| CN101881621B (en) | Omnibearing security and real-time navigation system supporting source sharing | |
| CN109270554A (en) | It is a kind of for controlling the subdivision dispatching method of satellite imagery | |
| CN104113849A (en) | Correction method of propagation model | |
| da Rocha Santos et al. | Performance analysis of a Vehicular Ad Hoc network Using LoRa technology and IoT devices in Amazon Rivers | |
| CN103177650B (en) | Simple digital map manufacturing method based on aerial photo | |
| CN113301519A (en) | Single-hop-distance-enhanced star-type marine Internet of things monitoring method and system | |
| CN103236152B (en) | Reinforced positioning system for cooperative information transmission of Internet and radio station | |
| CN207369304U (en) | Off-network is formed a team terminal and system | |
| KR20120017496A (en) | Method for estimating access point position by using signal strength waighted average, apparatus and computer-readable recording medium with program therefor | |
| CN102984800B (en) | Double mobile beacon self-adaptive quorum-sensing positioning method | |
| CN109257701B (en) | SX 1280-based wide-area Internet of things node positioning method and system | |
| CN105187147A (en) | Receiver system capable of locking the same broadcast channel based on different emission frequencies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |