CN104202125B - A kind of data processing method of satellite mobile communication system - Google Patents
A kind of data processing method of satellite mobile communication system Download PDFInfo
- Publication number
- CN104202125B CN104202125B CN201410471606.3A CN201410471606A CN104202125B CN 104202125 B CN104202125 B CN 104202125B CN 201410471606 A CN201410471606 A CN 201410471606A CN 104202125 B CN104202125 B CN 104202125B
- Authority
- CN
- China
- Prior art keywords
- value
- longitude
- latitude
- data
- offset
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a kind of data processing method of satellite mobile communication system, comprise the following steps：Step 1：The form of longitude and latitude degree of the being converted into every minute and second in home position is would indicate that, and longitude and latitude are carried out into migration processing, the positional information after skew is compiled into 22 position data b1~b22 of numeral composition；Step 3：The position data of 21 numeral compositions to being obtained in step 2 is encoded；Step 4：Recipient receives 19 position datas of numeral composition, and 21 position datas of numeral composition are solved by inverse operation；Step 5：Type of message is filled, 22 position datas of numeral composition are obtained；Step 6：The longitude and latitude of 22 position datas of numeral composition carry out inversely processing, obtain original position-information.The present invention uses the above method, can solve the problem that data volume causes greatly the low problem of channel utilization, improves the performance of tracking system, but also can ensure the safe transmission of user data.
Description
Technical field
The present invention relates to satellite communication field, and in particular to a kind of data processing method of satellite mobile communication system.
Background technology
Satellite communication is the product of modern communicationses, and its major function is to fill up existing communication (wire communication, radio communication)
The region that terminal cannot be covered, for the work of people provides more sound service.In recent years, as shipping is in communications and transportation
The need for the continuous lifting of middle status and resulting shipping safety and shipping management so that ship tracking monitoring system is got over
More to turn into focus of concern.It is the important component of control and monitoring system for ships to the real-time tracking of ship.In coastal waters, can
With by coastal station and it is land communicated, but arrived on the ocean of vastness, coastal station just loses effect, this
When, only by satellite communication.Satellite communication is used for the communication between ship and ship, between ship and land, can be led to
Words, data transfer, fax, navigator fix etc..
Navigation positioning satellite system conventional at present has position, Big Dipper etc., with positioning precision is high, real-time, whole day
Wait work and it is with low cost the advantages of, the real-time tracking that appearances of Satellite Navigation Technique makes it possible to ship, while tying
Modern wireless communication technology, computer networking technology and GIS-Geographic Information System are closed, can be set up for departments such as traffic and shipping companies
Efficiently, the monitoring and commanding system of modernization, makes the command scheduling that navigation is transported enter real-time, accurate, directly perceived, big with safety management
The centralized monitoring management of scope.
By satellite communication equipment, travel route, position, speed, height of ship etc. can be at any time tracked, and these
Information transmission is to control centre.In order to realize monitor in real time, it is necessary to largely continually send location information, these huge data
Amount will aggravate network burden, cause data transfer time delay increasing and the growth of communication cost, and this just leverages tracking system
The performance of system.A kind of cost of suitable data compression method for system, actual motion expense, data transfer and future
Popularization has highly important effect.
The content of the invention
It is an object of the invention to provide a kind of data processing method of satellite mobile communication system, for realizing limited
Data length in the more tracking informations of transmission, mitigate network burden, it is to avoid data transfer time delay increasing and communications cost
Increase；In addition, realizing the transmission of data using special coding, decoding process, it is ensured that the uniformity of coding and decoding, accurate
Property and security.
The present invention to achieve the above object, is realized using following technical scheme：A kind of data of satellite mobile communication system
Processing method, comprises the following steps：
Step 1：The form of longitude and latitude degree of the being converted into every minute and second in home position is would indicate that, and longitude and latitude are entered
Line displacement is processed, and the positional information after skew is compiled into 22 position data b1~b22 of numeral composition, and wherein b1 represents report
Literary type, b2~b8 is followed successively by the degree of longitude, minute, second, and b9~b15 is followed successively by the degree of latitude, minute, second, and b16~b18 is speed,
B19~b21 is course, and b22 is significance bit；
Step 2：Remove type of message b1, obtain 21 position data b2~b22 of numeral composition；
Step 3：The position data of 21 numeral compositions to being obtained in step 2 is encoded, and 21 numerals are constituted
Position data is converted to 19 position datas of numeral composition；
Step 4：Recipient receives 19 position datas of numeral composition, and 21 positions of numeral composition are solved by inverse operation
Put data；
Step 5：Type of message is filled, 22 position datas of numeral composition are obtained；
Step 6：The longitude and latitude of 22 position datas of numeral composition obtained to step 5 carry out inversely processing, obtain
Raw position data.
Further, the detailed process for carrying out migration processing in the step 1 to the longitude and latitude in home position is：
Step 11：The side-play amount of chosen longitude is Long_Offset, and the side-play amount of latitude is Lat_Offset, raw bits
The longitude put is expressed as ddd ° of mm ' ss.s ", the latitude in home position is expressed as ddd ° of mm ' ss.s "；
Step 12：According to longitude and the side-play amount of latitude, the longitude after being offset is (ddd ± Long_Offset) °
Mm ' ss.s ", latitude after skew is (ddd ± Lat_Offset) ° mm ' ss.s ", wherein ddd ± Long_Offset≤69,
ddd±Lat_Offset≤69。
Further, the specific coding process of the step 3 is：
Step 31：B6=b4*6+b6,
If b6 >=10, b4=(int) (b6/10), b6=b6%10；
If b6 ＜ 10, b4=0, b6=b6；
B13=b11*6+b13,
If b13 >=10, b11=(int) (b13/10), b13=b13%10；
If b13 ＜ 10, b11=0, b13=b13；
B22=b19*2+b22, b19=b22；Wherein int is accorded with for rounding operation, and % is accorded with for complementation；
Step 32：B11=b4*4+b11,
If b11 >=10, b4=(int) (b11/10), b11=b11%10；
If b11 ＜ 10, b4=0, b11=b11；
Step 33：B9=b2*7+b9,
If b9 >=10, b2=(int) (b9/10), b9=b9%10；
If b9 ＜ 10, b2=0, b9=b9；
Step 34：B4=b2*2+b4；
Step 35：New data b2~b22 is obtained by step 31~34, b3~b21 is assigned to a2~a20, a2 successively
~a20 is the data after coding, a1=b1.
Further, the specific inverse operation process of the step 4 is as follows：
Step 41：It is assumed that after completing step 31, the new data for obtaining are c2~c22；After completing step 32, what is obtained is new
Data be d2~d22；After completing step 33, the new data for obtaining are e2~e22；After completing step 34, what is obtained is new
Data are f2~f22, therefore, the data a2~a20 after coding is f3~f21；
Step 42：First, it is stipulated that the maximum of longitude and latitude is 69 ° 59 ' 59.9 ", can by the coded system of step 3
Know, the value of e4 can only be 0 or 1 less than 2, i.e. e4, because f4 is a3, can be derived from the value of e4 by the parity of f4, then by e4 and
F4 push away e2 value；
Step 43：The value and the value of combination a8 of the e2 by being released in step 42, can be derived from the value M of d2*7+d9；
Step 44：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", d2, d9 are respectively longitude and latitude
The highest order of the degree of degree, i.e. d2<7, d9<7, thus with reference to step 43
Can obtain：
Thus can be derived from the value of d2, d9；
Step 45：The value of d4 is due to the value of e4, the value of e11 is the value of d11, and the value of e4 has been obtained in step 42
Arrive, and e11 is a10, therefore, the value N of c4*4+c11 is that can determine that；
Step 46：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", c4, c11 are respectively longitude and latitude
Degree point highest order, then c4, c11 be respectively less than 4, then, following expression can be obtained：
Thus can be derived from the value of c4, c11；
Step 47：Because c6 is a5, the value that c13 is a12, c4 and c11 draws in step 46, therefore, can obtain
The value L of the value K and b11*6+b13 of b4*6+b6；
Step 48：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", it can thus be concluded that, b4<6, b6<6,
b11<6, b13<6, then, following expression can be obtained：
Two formulas can respectively obtain the value of b4, b6, b11, b13 more than；
Step 49：Because a18 is c19, b22=b19*2+b22, b19=b22, c19=b19, therefore, according to a18's
Parity can obtain the value of b22；In conjunction with the value of c19 and b22, the value of the b19 before coding is can be derived from；
Step 50：The value of b2, b4, b6, b11, b13, b19, b22 is obtained by above step, initial data b2~b22's
The value of remaining is equal with the value of the corresponding position of data a2~a20, i.e. b3=a2, b5=a4, b7=a6... by that analogy, from
And the position data b1~b22 before the coding being made up of 22 numerals is obtained, wherein b1 is knowable in advance.
The present invention compared with prior art, with advantages below and beneficial effect：
(1) present invention carries out reorganization layout to data, and the data after treatment not only take up room reduction, and can be with
The security of data is protected to a certain extent.
(2) by data shifting processing, data volume can be not only solved using the method causes greatly channel profit to the inventive method
With the low problem of rate, improve the performance of tracking system, but also the safe transmission of user data can be ensured.
Brief description of the drawings
Fig. 1 is coding and decoding schematic diagram of the invention.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this.
Embodiment：
A kind of data processing method of the satellite mobile communication system described in the present embodiment, comprises the following steps：
Step 1：The form of longitude and latitude degree of the being converted into every minute and second in home position is would indicate that, and longitude and latitude are entered
Line displacement is processed, and the positional information after skew is compiled into 22 position data b1~b22 of numeral composition, and wherein b1 represents report
Literary type, b2~b8 is followed successively by the degree of longitude, minute, second, and b9~b15 is followed successively by the degree of latitude, minute, second, and b16~b18 is speed,
B19~b21 is course, and b22 is significance bit；
Step 2：Remove type of message b1, obtain 21 position data b2~b22 of numeral composition, position data now
Although having lacked type of message b1, the value of b1 is able to know that in receiving terminal, therefore b1 can not be transmitted, save space；
Step 3：The position data of 21 numeral compositions to being obtained in step 2 is encoded, and 21 numerals are constituted
Position data is converted to 19 position datas of numeral composition, and what is obtained in fact after coding is also 21 position datas of numeral,
Simply wherein 19 numerals of this 21 position datas of numeral composition are transmitted, is in this step the number for removing two ends
Word, retains 19 middle numerals, so as to the position data after being encoded；
Step 4：Recipient receives 19 position datas of numeral composition, and 21 positions of numeral composition are solved by inverse operation
Put data, inverse operation is that for coding is counter pushes through journey；
Step 5：Type of message is filled, 22 position datas of numeral composition are obtained；
Step 6：The longitude and latitude of 22 position datas of numeral composition obtained to step 5 carry out inversely processing, you can
Original position-information is obtained, so-called inversely processing is to reduce the longitude of migration processing and latitude, obtains the longitude in home position
And latitude.
Below, implementation process of the invention is illustrated with reference to specific example, is as shown in Figure 1 coding of the invention
Process schematic, it is decoding process schematic diagram to also serve as, first, it is stipulated that longitude and the maximum of latitude in the present invention are
69 ° 59 ' 59.9 ", longitude mentioned here and latitude refer to the longitude and latitude after skew, such as our previously mentioned, positions
Data need for latitude and longitude to enter line displacement before encoding, it is assumed that the side-play amount of longitude is Long_Offset, the skew of latitude
It is Lat_Offset to measure, and the longitude in home position is expressed as ddd ° of mm ' ss.s ", the latitude in home position is expressed as ddd ° of mm '
ss.s”；According to longitude and the side-play amount of latitude, the longitude after being offset is (ddd ± Long_Offset) ° mm ' ss.s ", partially
Latitude after shifting is (ddd ± Lat_Offset) ° mm ' ss.s ", here, ddd ± Long_Offset and ddd ± Lat_Offset
Maximum be exactly that the maximum of 69, mm is exactly that the maximum of 59, ss.s is exactly 59.9.In addition, the numeral being related in the present invention
Positive number is, and is on earth east longitude or west longitude, north latitude or south latitude to distinguish original positional information, we can be prior
Agreement east longitude is positive number, west longitude is negative, north latitude is positive number, south latitude is negative, although the positional information for so drawing may have
Negative, or the degree of longitude and latitude is more than 99, but now by after side-play amount treatment, the position before coding being able to ensure that all the time
The longitude and latitude of data are at 0~69 ° 59 ' 59.9 " between, i.e. 0≤ddd ± Long_Offset≤69,0≤ddd ± Lat_
Offset≤69。
Certainly, to ensure that different positions has different side-play amounts through spending with latitude in such range after offseting,
Specify in the present embodiment：
Actual longitude is at -180 ° 0 ' 0 " to -110 ° 0 ' 1 " it is interior when, side-play amount Long_Offset is 180 ° 0 ' 0 ", such reality
Border precision is plus side-play amount just at 0- ° 69 ° 59 ' 59.9 " in,
Similarly：
Actual longitude is at -110 ° 0 ' 0 " to -40 ° 0 ' 1 " it is interior when, side-play amount Long_Offset is 110 ° 0 ' 0 "；
Actual longitude is at -40 ° 0 ' 0 " to -0 ° 0 ' 1 " it is interior when, side-play amount Long_Offset is 40 ° 0 ' 0 "；
Actual longitude is at 0 ° 0 ' 0 " to 69 ° 59 ' 59 " it is interior when, side-play amount Long_Offset be 0 ° 0 ' 0 "；
Actual longitude is at 70 ° 0 ' 0 " to 139 ° 59 ' 59 " it is interior when, side-play amount Long_Offset be -70 ° 0 ' 0 "；
Actual longitude is at 140 ° 0 ' 0 " to 180 ° 0 ' 0 " it is interior when, side-play amount Long_Offset be -140 ° 0 ' 0 "；
Actual latitude is at -90 ° 0 ' 0 " to -20 ° 0 ' 1 " it is interior when, side-play amount Lat_Offset is 90 ° 0 ' 0 "；
Actual latitude is at -20 ° 0 ' 0 " to -0 ° 0 ' 1 " it is interior when, side-play amount Lat_Offset is 20 ° 0 ' 0 "；
Actual latitude is at 0 ° 0 ' 0 " to 69 ° 59 ' 59 " it is interior when, side-play amount Lat_Offset be 0 ° 0 ' 0 "；
Actual latitude is at 70 ° 0 ' 0 " to 90 ° 0 ' 0 " it is interior when, side-play amount Lat_Offset be -70 ° 0 ' 0 "；
As can be seen that in the world only in 5 longitude station conversion side-play amounts, in 4 Position Latitude conversion skews
Amount, and the traveling of ship generally relatively slow and position consecutive variations, therefore without moment transmission deviation amount, it is only necessary to reach
It is above-mentioned that mobile satellite communication terminal notifies ground monitoring terminal change side-play amount when needing to convert the position of side-play amount, because
In this tracking data need not transmission deviation amount, the side-play amount can inform recipient using other modes.Above-mentioned side-play amount
Setting be only a kind of specific embodiment, in practical application, it would however also be possible to employ the skews that match with longitude, latitude of others
Amount method to set up, is not limited in above-mentioned set-up mode.
We are assumed by position data b2~b22 for 695959969595999993991 below, now the longitude of position and
Latitude is maximum, and longitude and latitude now pass through side-play amount treatment.
Followed by specific cataloged procedure：
Step 31：B6=b4*6+b6,
If b6 >=10, b4=(int) (b6/10), b6=b6%10；
If b6 ＜ 10, b4=0, b6=b6；
Thus b4=3, b6=5 are drawn；
B13=b11*6+b13,
If b13 >=10, b11=(int) (b13/10), b13=b13%10；
If b13 ＜ 10, b11=0, b13=b13；
Thus b11=3, b13=5 are drawn；
B22=b19*2+b22, b19=b22；Thus b19=7 is drawn；
Step 32：B11=b4*4+b11,
If b11 >=10, b4=(int) (b11/10), b11=b11%10；
If b11 ＜ 10, b4=0, b11=b11；
Thus b4=1, b11=5 are drawn；
Step 33：B9=b2*7+b9,
If b9 >=10, b2=(int) (b9/10), b9=b9%10；
If b9 ＜ 10, b2=0, b9=b9；
Thus b2=4, b9=8 are drawn；
Step 34：B4=b2*2+b4；Thus b4=9 is drawn；
Step 35：New data b2~b22 is obtained by step 31~step 34, b2~b22 is
499959989595999997991, b3~b21 is assigned to a2~a20 successively, a2~a20 is the data after coding, a2~
A20 is that 9995998959599999799, a1=b1, b1 is known.
Next, after recipient receives the data after coding, being decoded, decoding process is corresponding with cataloged procedure, mainly
It is an anti-process for pushing away, it is specific as follows：
Step 41：Describe for convenience, it is assumed that after completing step 31, the new data for obtaining are c2~c22；Complete step
After 32, the new data for obtaining are d2~d22；After completing step 33, the new data for obtaining are e2~e22；Complete step 34
Afterwards, the new data for obtaining are f2~f22, therefore, the data a2~a20 after coding is f3~f21；
Step 42：Because the maximum for defining longitude and latitude before is 69 ° 59 ' 59.9 ", by the coding of step 3
Mode understands that the value of e4 is less than 2, because e4=d4, d4=(int) (c11/10), c11=c4*4+c11, c4=(int) (b6/
10), b6=b4*6+b6, c11=(int) (b13/10), b13=b11*6+b13, i.e. e4 can only be 0 or 1, because f4 is
A3, f4=a3=9, e4=1 is can be derived from according to parity, and due to f4=e2*2+e4, can obtain e2=4；
Step 43：The value and the value of combination a8 of the e2 by being released in step 42, can be derived from the value M of d2*7+d9, because a8=
D9=8, e2=d2=4, then d2*7+d9=M=48；
Step 44：It is respectively the highest order of the degree of longitude and latitude due to d2, d9, the maximum of longitude and latitude is 69 °
59 ' 59.9 ", i.e. d2<7, d9<7, thus can be obtained with reference to step 43：
Thus d2=6, d9=6 be can be derived from；
Step 45：The value of d4 is due to the value of e4, the value of e11 is the value of d11, and the value of e4 has been obtained in step 42
Arrive, and e11 is a10, therefore, the value N of c4*4+c11 is that can determine that, because e4=d4=1, e11=d11=a10=5, in
It is, c4*4+c11=N=15；
Step 46：Due to c4, c11 be respectively longitude and latitude point highest order, the maximum of longitude and latitude is 69 °
59 ' 59.9 ", the maximum of c4=(int) (b4*6+b6), b4*6+b6 is 35, similarly, c11=(int) (b11*6+b13),
The maximum of b11*6+b13 is 35, therefore, c4, c11 are respectively less than 4, then, can obtain following expression：
Thus c4=3, c11=3 be can be derived from；
Step 47：Because c6 is a5, the value that c13 is a12, c4 and c11 draws in step 46, therefore, can obtain
The value L of the value K and b11*6+b13 of b4*6+b6, by c6=a5=5, c13=a12=5, can obtain b4*6+b6=K=35,
B11*6+b13=L=35；
Step 48：Because the maximum of longitude and latitude is 69 ° 59 ' 59.9 ", it can thus be concluded that, b4<6, b6<6, b11<6,
b13<6, then, following expression can be obtained：
Two formulas can respectively obtain b4=5, b6=5, b11=5, b13=5 more than；
Step 49：Because a18 is c19, b22=b19*2+b22, b19=b22, c19=b19, therefore, according to a18's
Parity can obtain the value of b22, due to a18=c19=7, then b22=1, and c19=b19*2+b22, it can thus be concluded that b19=
3；
Step 50：B2=6, b4=5, b6=5, b11=5, b13=5, b19=3, b22=1 are obtained by above step,
The value of remaining of initial data b2~b22 is equal with the value of the corresponding position of data a2~a20, i.e. b3=a2=9, b5=a4=
9, b7=a6=9... by that analogy, the position data b1~b22 before type of message b1 can be encoded is filled, if to obtain
To original positional information, only longitude and latitude need to be carried out inversely processing, side-play amount correspondingly be subtracted or plus i.e. available
Original positional information.
The present invention is realized to the compression of position data transmission, realize transmitted in limited data length it is more with
Track information, mitigates network burden, it is to avoid data transfer time delay increasing and the increase of communications cost.In addition, by longitude and
Latitude makes the longitude and latitude of the position data before coding be maintained at 0~69 ° 59 ' 59.9 using dexterously migration processing " it
Between, original position data is there occurs the change in content, the security of data transmission is improve, meanwhile, will
Longitude and latitude are limited to 0~69 ° 59 ' 59.9 " between also have the present invention more cleverly place, by coding it can be found that
The coded system that the present invention is used is unique, enables to solve unique data when decoding, is especially entirely encoding
In mode, there are two steps to employ the mode of " multiplying 2 ", such as b22=b19*2+b22, b4=b2*2+b4, by this
Mode, can dexterously immediately arrive at corresponding numeral using parity judgement, meanwhile, whole coding, decoding step ring ring phase
Button, can be by " maximum of longitude and latitude be 69 ° 59 ' 59.9 " " this condition, unique solution is drawn, so that it is guaranteed that compiling
Code and the uniformity of decoding, accuracy and security.
The above, is only presently preferred embodiments of the present invention, not does any formal limitation to the present invention, it is every according to
Any simple modification, the equivalent variations made to above example according to technical spirit of the invention, each fall within protection of the invention
Within the scope of.
Claims (3)
1. a kind of data processing method of satellite mobile communication system, it is characterised in that：Comprise the following steps：
Step 1：The form of longitude and latitude degree of the being converted into every minute and second in home position is would indicate that, and longitude and latitude are carried out partially
Shifting is processed, and the positional information after skew is compiled into 22 position data b1~b22 of numeral composition, and wherein b1 represents message class
Type, b2~b8 is followed successively by the degree of longitude, minute, second, and b9~b15 is followed successively by the degree of latitude, minute, second, and b16~b18 is speed, b19
~b21 is course, and b22 is significance bit；
Step 2：Remove type of message b1, obtain 21 position data b2~b22 of numeral composition；
Step 3：The position data of 21 numeral compositions to being obtained in step 2 is encoded, by 21 positions of numeral composition
Data are converted to 19 position datas of numeral composition；
Step 4：Recipient receives 19 position datas of numeral composition, and 21 positional numbers of numeral composition are solved by inverse operation
According to；
Step 5：Type of message is filled, 22 position datas of numeral composition are obtained；
Step 6：The longitude and latitude of 22 position datas of numeral composition obtained to step 5 carry out inversely processing, obtain original
Positional information；
The specific coding process of the step 3 is：
Step 31：B6=b4*6+b6,
If b6 >=10, b4=(int) (b6/10), b6=b6%10；
If b6 ＜ 10, b4=0, b6=b6；
B13=b11*6+b13,
If b13 >=10, b11=(int) (b13/10), b13=b13%10；
If b13 ＜ 10, b11=0, b13=b13；
B22=b19*2+b22, b19=b22；
Step 32：B11=b4*4+b11,
If b11 >=10, b4=(int) (b11/10), b11=b11%10；
If b11 ＜ 10, b4=0, b11=b11；
Step 33：B9=b2*7+b9,
If b9 >=10, b2=(int) (b9/10), b9=b9%10；
If b9 ＜ 10, b2=0, b9=b9；
Step 34：B4=b2*2+b4；
Step 35：New data b2~b22 is obtained by step 31~step 34, b3~b21 is assigned to a2~a20, a2 successively
~a20 is the data after coding, a1=b1.
2. the data processing method of a kind of satellite mobile communication system according to claim 1, it is characterised in that：The step
The detailed process for carrying out migration processing in rapid 1 to the longitude and latitude in home position is：
Step 11：The side-play amount of chosen longitude is Long_Offset, and the side-play amount of latitude is Lat_Offset, home position
Longitude is expressed as ddd ° of mm ' ss.s ", the latitude in home position is expressed as ddd ° of mm ' ss.s "；
Step 12：According to longitude and the side-play amount of latitude, the longitude after being offset is (ddd ± Long_Offset) ° mm '
Ss.s ", latitude after skew is (ddd ± Lat_Offset) ° mm ' ss.s ", wherein ddd ± Long_Offset≤69, ddd ±
Lat_Offset≤69。
3. the data processing method of a kind of satellite mobile communication system according to claim 1, it is characterised in that：The step
Rapid 4 specific inverse operation process is as follows：
Step 41：It is assumed that after completing step 31, the new data for obtaining are c2~c22；After completing step 32, the new number for obtaining
According to being d2~d22；After completing step 33, the new data for obtaining are e2~e22；After completing step 34, the new data for obtaining
It is f2~f22, therefore, the data a2~a20 after coding is f3~f21；
Step 42：First, it is stipulated that the maximum of longitude and latitude is 69 ° 59 ' 59.9 ", by the coded system of step 3,
The value of e4 can only be 0 or 1 less than 2, i.e. e4, because f4 is a3, the value of e4 be can be derived from by the parity of f4, then pushed away by e4 and f4
Obtain the value of e2；
Step 43：The value and the value of combination a8 of the e2 by being released in step 42, can be derived from the value M of d2*7+d9；
Step 44：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", d2, d9 are respectively longitude and latitude
The highest order of degree, i.e. d2<7, d9<7, thus can be obtained with reference to step 43：
Thus can be derived from the value of d2, d9；
Step 45：The value of d4 is due to the value of e4, the value of e11 is the value of d11, and the value of e4 has been obtained in step 42, and
E11 is a10, therefore, the value N of c4*4+c11 is that can determine that；
Step 46：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", c4, c11 are respectively longitude and latitude
Point highest order, then c4, c11 be respectively less than 4, then, following expression can be obtained：
Thus can be derived from the value of c4, c11；
Step 47：Because c6 is a5, the value that c13 is a12, c4 and c11 draws in step 46, therefore, b4*6+ can be obtained
The value L of the value K and b11*6+b13 of b6；
Step 48：Because the maximum for defining longitude and latitude is 69 ° 59 ' 59.9 ", it can thus be concluded that, b4<6, b6<6, b11<
6, b13<6, then, following expression can be obtained：
Two formulas can respectively obtain the value of b4, b6, b11, b13 more than；
Step 49：Because a18 is c19, b22=b19*2+b22, b19=b22, c19=b19, therefore, according to the odd even of a18
Property can obtain the value of b22；In conjunction with the value of c19 and b22, the value of the b19 before coding is can be derived from；
Step 50：Obtain the value of b2, b4, b6, b11, b13, b19, b22 by above step, initial data b2~b22 remaining
Position value it is equal with the value of the corresponding position of data a2~a20, i.e. b3=a2, b5=a4, b7=a6... by that analogy so that must
Position data b1~b22 before to the coding being made up of 22 numerals, wherein b1 are knowable in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471606.3A CN104202125B (en) | 2014-09-16 | 2014-09-16 | A kind of data processing method of satellite mobile communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410471606.3A CN104202125B (en) | 2014-09-16 | 2014-09-16 | A kind of data processing method of satellite mobile communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104202125A CN104202125A (en) | 2014-12-10 |
| CN104202125B true CN104202125B (en) | 2017-06-13 |
Family
ID=52087363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410471606.3A Expired - Fee Related CN104202125B (en) | 2014-09-16 | 2014-09-16 | A kind of data processing method of satellite mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104202125B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105975626B (en) * | 2016-05-27 | 2019-12-27 | 海尔优家智能科技（北京）有限公司 | Method and device for encoding geographical location information of equipment |
| CN113365210B (en) * | 2021-03-30 | 2022-11-11 | 公安部第一研究所 | Satellite positioning data compression method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847679A (en) * | 1992-03-04 | 1998-12-08 | Motorola, Inc. | GPS based search and rescue system |
| TW200827759A (en) * | 2006-09-29 | 2008-07-01 | O2Micro Inc | System and methods for secure communication using an enhanced GPS receiver |
| CN101459492A (en) * | 2008-12-30 | 2009-06-17 | 国家电网公司 | Data transmission method and system, data sending terminal |
| CN101980327A (en) * | 2010-09-30 | 2011-02-23 | 北京灵图软件技术有限公司 | Sending method and device and receiving method and device for spatial position, and terminal |
-
2014
- 2014-09-16 CN CN201410471606.3A patent/CN104202125B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5847679A (en) * | 1992-03-04 | 1998-12-08 | Motorola, Inc. | GPS based search and rescue system |
| TW200827759A (en) * | 2006-09-29 | 2008-07-01 | O2Micro Inc | System and methods for secure communication using an enhanced GPS receiver |
| CN101459492A (en) * | 2008-12-30 | 2009-06-17 | 国家电网公司 | Data transmission method and system, data sending terminal |
| CN101980327A (en) * | 2010-09-30 | 2011-02-23 | 北京灵图软件技术有限公司 | Sending method and device and receiving method and device for spatial position, and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104202125A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1154285C (en) | Flexible method of error protection in communications systems | |
| CN105743616B (en) | Long message segmentation and reliable communication method based on Big Dipper short message communication | |
| US20150358136A1 (en) | Method and Apparatus For Reducing Feedback and Enhancing Message Dissemination Efficiency in a Multicast Network | |
| EP3193472B1 (en) | Data packet processing method and device | |
| Leong et al. | Erasure coding for real-time streaming | |
| TWI606743B (en) | Method of multiuser superposition transmission and base station using the same | |
| CN104081701B (en) | Communication means, system and the device of optical network system | |
| CN104202125B (en) | A kind of data processing method of satellite mobile communication system | |
| CN103888225A (en) | Method for fountain codes under binary erasure channel | |
| CN104253996A (en) | Video data sending and receiving methods, video data sending and receiving devices and video data transmission system | |
| CN104202078B (en) | Satellite mobile communication system subscriber's data transmission method and system | |
| CN111385779A (en) | Data processing method, device and storage medium | |
| CN109361492A (en) | A kind of high-performance interpretation method for combining physical-layer network coding and polarization code | |
| CN106165470B (en) | Information transferring method, equipment and system | |
| CN115314121B (en) | Quantum communication method and device and electronic equipment | |
| CN107566100B (en) | Information sending and receiving method and equipment | |
| Liu et al. | Performance analysis of packet layer FEC codes and interleaving in FSO channels | |
| CN109687934A (en) | Adaptable System code FEC method, apparatus and system based on media content | |
| Torre et al. | Network-coded multigeneration protocols in heterogeneous cellular networks | |
| CN104954098B (en) | A kind of CORS data encoding transmission methods for being applicable long haul communication | |
| Wang et al. | Adaptive modulation schemes for underwater wireless optical communication systems | |
| WO2013134357A1 (en) | Efficient broadcasting via random linear packet combining | |
| CN103188389A (en) | Data transmission method and data transmission device | |
| CN105103491A (en) | Data transmission method and apparatus | |
| CN108322284B (en) | Coding block sending method, data receiving method, access network equipment and terminal equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20170916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |