CN1300947A - Differentiating GPS using radio paging - Google Patents
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- CN1300947A CN1300947A CN99124983A CN99124983A CN1300947A CN 1300947 A CN1300947 A CN 1300947A CN 99124983 A CN99124983 A CN 99124983A CN 99124983 A CN99124983 A CN 99124983A CN 1300947 A CN1300947 A CN 1300947A
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Abstract
A differentiating DGPS is disclosed, which uses radio paging system to transmit the modifying DGPS data to be position to be located for the differentiating modification to the virtual distance of said position, which is obtained by the observation of receiver in DGPS. A radio paging system for transmitting the modifying DGPS data is included. After the modifying DGPS data is received, the differentiating DGPS can realize accurate location to the position to be located.
Description
The relevant a kind of differential Global Positioning System of the present invention, particularly relevant a kind of radio paging system that utilizes transmits the differential Global Positioning System that DGPS revises data message.
The U.S. announces that its GPS that is used for military use will open the part navigation feature to since the use among the people since nineteen eighty-three in Christian era, and industrial community drops into the research of a large sum of funds in GPS one after another.Wherein, utilize radio data system (Radio Data System RDS) to transmit the differential Global Positioning System that DGPS revises data message, exactly in order to reach the system that large-scale accurately location is developed out.Now outline GPS principle, DGPS principle respectively and how to utilize RDS to transmit DGPS correction data message as follows:
(1) GPS principle (see also: [1] Huang Kaihong, set up simple type DGPS systematic research, state-run Taiwan shipping technical institute of ocean university master thesis, the Republic of China in June, 87):
The localization method of GPS has pseudo range (Pseudo-Range) observation method and carrier phase (Carrier Phase) observation method.Modern is example with the pseudo range observation method, illustrate that the GPS principle is as follows: (coordinate of supposing this unknown position is (X, Y, Z)) placement one GPS receiver (the time Watch Error of supposing this receiver is T) on the position of desire location.(its coordinate is known, and hypothesis is respectively (X1, Y1 to utilize this GPS receiver to receive at least four gps satellites, Z1), (X2, Y2, Z2), (X3, Y3, Z3), (X4, Y4, Z4)) signal, with the position that obtains desire location observation pseudo range (supposing to be respectively S1, S2, S3, S4) to each gps satellite, then utilize following four equations, can obtain the position (X of desire location, Y, Z):
[(Xi-X)
2+(Yi-Y)
2+(Zi-Z)
2]
1/2+C*T=Si
Wherein C is the light velocity, i=1,2,3,4.
(2) DGPS principle (see also: [1] Huang Kaihong, set up simple type DGPS systematic research, state-run Taiwan shipping technical institute of ocean university master thesis, the Republic of China in June, 87)
DGPS is mainly revising the location defective of GPS, the subject matter of desire location being made an accurate localization more, the method for its correction have pseudo range revised law and coordinate component revised law, existing be example with the pseudo range revised law, illustrate that the DGPS principle is as follows:
On the reference point of a known location, place a GPS receiver.Utilize this GPS receiver to obtain the observation pseudo range of this reference point at least four gps satellites.The pseudo range that this reference point to the actual range and the observation station of each gps satellite gets is made comparisons, obtain a pseudo range correction.
Then, on the position of the not far desire location of a distance reference point, place a GPS receiver, to obtain above-mentioned each gps satellite observation pseudo range of the position of desire location so far.Send resulting pseudo range correction on the reference point to GPS receiver that this desire location is located,, locate more accurately so that place, desire location is done one by the observation pseudo range of place, differential corrections desire location to each gps satellite.
At this, the differential corrections of DGPS is done an explanation: in GPS, there are some errors the position of desire location between the observation pseudo range of each gps satellite and real actual range, and this error mainly includes: (1) satellite orbital error (comprises the range difference of satellite broadcasting ephemeris and actual track generation, the range difference of SA (Selective availability) effect generation.) Watch Error (6) multipath and illusion error or the like during Watch Error (3) ionosphere retardation error (4) troposphere retardation error (5) GPS receiver during (2) satellite.And if the position of the desire among DGPS location is with reference point apart from not far, and then Watch Error, ionosphere retardation error, troposphere retardation error all can be considered identical when the satellite orbital error of the two, satellite.In other words, utilize the differential corrections of DGPS four kinds of error effectss in above-mentioned six kinds of main errors can be ignored, make through the observation pseudo range after the differential corrections more near actual range.So on the accurate positioning degree, DGPS is good than GPS.
(3) transmission that utilizes RDS to carry out the correction data message of DGPS (sees also: [1] Huang Junhua, promptness DGPS and the RDS/DGPS application on real ship measures, Univ Nat Taiwan's shipbuilding and hydronautics research institute Master's thesis, the Republic of China in June, 86.[2]Borje?Forsell,A?Method?for?Dissemination?of?DGPS?Corrections?by?FM-RDS?and?Testsof?Some?GPS?Receivers,Norwegian?University?of?Science?＆Technology)：
RDS utilizes the broadcasting station sub-carrier modulation transmitting needed numeric data code, when Gu Dangqi is used in the transmission of correction data message of DGPS, and can be (for example: the navigation of vehicle as in a big way accurate position application.)。The coded system of modern explanation RDS is as follows:
Mainly so that the group group of 104 bits to be arranged, each group group has 4 piece block to the coded system of RDS, and each piece block contains 26 bits (wherein preceding 16 bits are numeric data code, and back 10 bits are check code).The differential coded system of RDS The data, the required time is 87.6ms to transmit 104 bits (a group group), so its subcarrier transmission speed is about 1187.5bits/s.The transmission of each group group has comprised the bit that transmits at first, the radio station identification sign indicating number and check code A among first piece block, check code C and D among cohort sign indicating number, traffic program sign indicating number, program kenel sign indicating number and the check code B among second piece block, the 3rd and the 4th block.
According to an embodiment of tradition invention, utilize the DGPS structure of RDS as follows now with Fig. 1 explanation: a GPS receiver 102, in order to receive the signal of at least four satellites, to obtain the observation virtual location at GPS receiver 102 places.One DGPS (for example: computer) revises data message computing module 10, the observation virtual location at GPS receiver 102 places and the exact position at GPS receiver 102 places are made comparisons, revise data message to obtain a DGPS, and this DGPS is revised data message be encoded into the standard format of RTCM SC-104 ([notes]: this standard format is by (the Radio Technical Commission for Maritime Services of the U.S. maritime affairs radio council, RTCM) special 104 councils that formed (Special Committee No.104 SC-104) works out).
Coding module 106 in one broadcasting station is revised the signal that data message is encoded into a RDS form in order to DGPS is revised the DGPS that data message computing module 104 transmits.One broadcasting station transmitting station 108, the signal of the RDS form that transmits in order to the module 106 of being encoded in the broadcasting station amplifies, and forming radiofrequency signal, and radiofrequency signal is outwards transmitted with Wireless transmission mode.One RDS receiver 110 is used for receiving the radiofrequency signal that broadcasting station transmitting station 108 transmits, and produces a fundamental frequency signal after treatment.One RDS demoder 112 is decoded in order to the fundamental frequency signal that RDS receiver 110 is transmitted, and revises data message with the DGPS that obtains RTCM SC-104 standard format.One GPS receiver 116 is in order to receive the signal of at least four satellites, to obtain the observation virtual location at GPS receiver 116 places.One locatees correcting module 114, and the DGPS that utilizes RDS demoder 112 to transmit revises data message, revises doing one from the observation virtual location of GPS receiver 116, locatees more accurately so that the position at GPS receiver 116 places is done one.
Though utilize RDS to carry out the transmission of the correction data message of DGPS, can as in a big way accurate position application.Yet it still has following shortcoming:
(1) since the coverage area in general broadcast radio station approximately can only reach apart from the transmitting station radius about 20 kilometers with interior area, and therefore two broadcasting stations often have the reception defective region if distance too closely can produce and interfere with each other.Containing the bad and radio station phase mutual interference meeting of reception, to cause RDS to transmit the fiduciary level and the coverage area of correction data message of DGPS less.And the common radio hookup net that utilizes the zones of different radio station at different frequency range causes receiver to receive the difficulty of a plurality of channels again.If it adopts the mode that repeats to transmit data to increase the fiduciary level of transmission data, then will take too many frequency range, thereby have a strong impact on the speed of transmission data.
(2) because subcarrier transmission speed is not high, only be approximately 1187.bits/s, so the speed of utilizing broadcasting station RDS to transmit the pseudo range correction of DGPS will more and more can't satisfy modern's craving for rapid reception mass data information in the future.
(3) the RDS message length that transmitted in broadcasting station is not long, is confined to 80 bit groups of 18 bit digital or lteral data.
The purpose of this invention is to provide and a kind ofly can overcome some shortcomings that the transmission that utilizes RDS to carry out the correction data message of DGPS exists, thereby utilize the differential Global Positioning System of radio-paging, the DGPS that this system can carry out high-reliability, high transfer rate and big coverage area revises the transmission of data message, with as on a large scale accurate position application.
The object of the present invention is achieved like this: it is to utilize radio paging system that DGPS is revised data message to be sent to place, desire location, is made a differential corrections the GPS receiver at place, desire location observes the virtual location at the place, desire location that obtains.System architecture of the present invention comprises DGPS correction data message and receives module, radio-paging form coding module, a radio-paging emitting mould train, an antenna assembly, radio-paging reception module, a radio frequency frequency reducing module, a decoding module, GPS reception module and a location correcting module.
Wherein DGPS revises data message and receives module, is to revise data message in order to receive a DGPS through one first transformat coding.Radio-paging form coding module is to revise data message with DGPS to receive module and couple, and revises the signal that data message is encoded into a radio-paging form in order to DGPS is revised the DGPS that data message receives first transformat that module transmits.The radio-paging emitting mould train is to couple with radio-paging form coding module, amplifies in order to the signal of radio-paging form that radio-paging form coding module is transmitted, to form radiofrequency signal.Antenna assembly is to couple mutually with the radio-paging emitting mould train, in order to receiving the radiofrequency signal that the radio-paging emitting mould train transmits, and radiofrequency signal is outwards transmitted with Wireless transmission mode.
Receiving module as for radio-paging, is to be used for the radiofrequency signal that receiving antenna device transmits.Radio frequency frequency reducing module is to be used to receive radio-paging to receive the radiofrequency signal that module transmits, to produce a fundamental frequency signal.The decoding module is to be coupled with radio frequency frequency reducing module, decodes in order to the fundamental frequency signal that radio frequency frequency reducing module is transmitted, and revises data message with the DGPS that obtains first transformat.GPS receives module, is in order to receive the signal of multi-satellite, to obtain the observation position that GPS receives the module place.As for the location correcting module, be to be coupled with the decoding module, utilize the DGPS that the decoding module transmits to revise data message, the observation position that receives module from GPS is done one revise.
The first wherein above-mentioned transformat comprises RTCM SC-104 form at least.The load mode that the DGPS of first transformat coding revises data message then comprises wireless transmission method or wire transmission mode.Again, DGPS correction data message comprises distance error correction data message at least.And the radio-paging form comprise at least following one of them: FLBX, ReFLEX, InFLEXion, POSAG, ERMES, APOG.
In addition, above-mentioned system architecture is one of the present invention embodiment, place GPS reception module and DGPS correction data message computing module on the known location to be replaced if the DGPS in the said system structure is revised data message reception module with one, then the present invention can produce DGPS voluntarily and revise data message.Wherein, GPS on this known location receives module, can receive the signal of multi-satellite, thereby obtain the observation position at its place, and DGPS revises data message computing module, observation position and the physical location that this GPS can be received the module place be made comparisons, thereby obtain DGPS correction data message, and DGPS is revised data message are encoded into one first transformat.So the coding of radio-paging form at this moment module, couple as long as make to revise data message computing module with DGPS into, the DGPS that then DGPS can be revised first transformat that data message computing module transmits revises the signal that data message is encoded into a radio-paging form.
More than be two embodiment of the present invention, by the radio paging system that is utilized among the embodiment, DGPS can be revised data message and transmit, therefore can be used as on a large scale accurately position application in the mode of high-reliability, high transfer rate and big coverage area.
Radio paging system comparison used in the present invention broadcasting station RDS system is excellent local as follows:
(1) coverage area of broadcasting station RDS can only reach approximately apart from the transmitting station radius about 20 kilometers with interior area, the specification of RDS does not allow two radio station to lean on too closely again, the fiduciary level and the coverage area that therefore transmit data are less.
If it adopts the mode that repeats to transmit data to increase the fiduciary level of transmission data, then will take too many frequency range, thereby have a strong impact on the speed of transmission data.And radio paging system does not have above-mentioned restriction, and it can topped bigger zone.
(2) radio paging system mainly is to do data transmission, mechanism with synchronized broadcast (Simulcast), can make the time synchronized (also promptly simultaneously with same frequency emission data) of adjacent base station emission data, do not cause phase mutual interference (yet promptly having antijamming capability), make that the fiduciary level of transmission data is quite high.
(3) radio paging system belongs to commerce and industrial use, contains no leak, and basement to second floor also can receive signal, with respect to belong to recreational, the radio station number is few and contain relatively poor broadcasting station compares, and is more suitable for doing the use of DGPS.
(4) the RDS message length that transmitted in broadcasting station is limited in 80 bit groups of 18 bit digital or lteral data, (with FLEX6400 is example not as radio paging system can transmit long order information, the message length that each data block transmits is 32 character sign indicating numbers, and the length of each character sign indicating number is 32 bits).
(5) transfer rate of radio paging system (with FLEX6400 is example, and its transfer rate is 6400bits/s) compares subcarrier transmission speed (being about 1187.5bits/s) for high.
(6) radio paging system can (with FLEX6400 be example by increasing bit error correction ability and better decay protection; its decay protection is: 10ms) to improve the reliability of reception information; therefore can tangible improvement be arranged to the decline (Fading) of multi-path and environment; thereby radio frequency (Radio Frequency, RF) the signal attenuation phenomenon that generally occurs in the synchronized broadcast calling system have been reduced.
(7) radio paging system (for example: FLEX6400) can provide end of message (EOM) control and can select the drop-out flag whether to miss any information with the notice receiving end, if missing any information can require to retransmit (in addition, if receiving end shutdown or when leaving covering scope also has warning and shows and misses information capability).
The present invention is characterized in: (1) utilizes radio paging system, and the DGPS that carries out high-reliability, high transfer rate and big coverage area revises the transmission of data message.(2) utilize the system that can receive radio-paging signal and satellite-signal, carry out the accurate location of object.
Below conjunction with figs. is formed structure of the present invention and the more clearly explanation of feature do:
Fig. 1 is the embodiment according to the tradition invention, utilizes the synoptic diagram of the DGPS structure of RDS;
Fig. 2 is according to a preferred embodiment of the present invention, utilizes the DGPS structural representation of radio-paging;
Fig. 3 is according to another preferred embodiment of the present invention, utilizes the DGPS structural representation of radio-paging.
The present invention utilizes radio paging system, and the DGPS that carries out high-reliability, high transfer rate and big coverage area revises the transmission of data message, with as on a large scale accurate position application (for example: the navigation of vehicle).
Radio-paging can have multiple call agreement, comprises FLEX6400, ReFLEX, InFLEXion, POSAG1200, ERMES, APOC6400 etc., is reliable transmission mode.Now the call format with FLEX6400 format description radio paging system is as follows:
The form of FLEX6400 is formed (being referred to as " one-period ") by numbering from 0 to 127 128 frames (Frame), and each frame transmission takes 1.875 seconds.Wherein each frame comprises synchronization blocks (Sync Block) and 11 data blocks (Data Block) of one 184 bit.Among the FLEX6400, each data block comprises 4 staggered (interleaving) continuous datas, and wherein each staggered continuous data is made up of the character sign indicating number (codeword) of 8 row, 32 bits.The transfer rate of FLEX6400 is 6400bits/s, has antijamming capability, and adding in the character sign indicating number of each 32 bit has 10 bits to do data correction, makes that the fiduciary level of transmission data is quite high.
Each staggered continuous data is to be arranged to row with BCH code among the FLEX6400, and transmit with " row transmission mode ", also promptly transmit the 1st bit of first character sign indicating number earlier, transmit the 1st bit of second character sign indicating number, the 1st bit of the 3rd character sign indicating number or the like then successively, after the 1st bit of the 8th character sign indicating number also is transmitted, then transmit the 2nd bit of these eight character sign indicating numbers successively, to the last transmit the 32nd bit of these eight character sign indicating numbers more successively.FLEX6400 adopts staggered multiplex's processing mode, also be that the multiplex (MUX) handles this 4 staggered continuous datas, and the load mode of each staggered continuous data is above-mentioned " row transmission mode ".When data that FLEX6400 transmitted after decoding is reduced into 4 staggered continuous datas, each staggered continuous data can be utilized the mistake of 2 bits to count via system's identification and each character sign indicating number and be corrected.
Owing to utilizing the mistake of 2 bits to count, corrected each character sign indicating number among the above-mentioned FLEX6400, so the decline that 10ms can be provided is protected, and (this is because of having the individual character sign indicating number of 32 (4*8) in 4 staggered continuous datas, and each character sign indicating number utilizes the mistake of 2 bits to count to be corrected, so the decline protection of 10ms (32*2*6400bits/s) can be provided).
The present invention involves three aspects: (1) space: at least four satellites, and in order to carry out global location.(2) transmit the radio paging system that DGPS revises data message: utilize radio paging system, carry out the transmission that DGPS revises data message.(3) subject matter of desire location: can receive from least four information that satellite transmits in the space, revise data message with observation virtual location that obtains the subject matter place and the DGPS that utilizes received radio paging system to transmit, observation virtual location to the subject matter place is made a differential corrections, to carry out the accurate location of subject matter.
Now according to a preferred embodiment of the present invention, the structure that the DGPS that utilizes radio-paging is described with Fig. 2 is as follows: a DGPS revises data message reception module 302, and (for example: computer), the DGPS that transmits in order to reception wireless transmission or wire transmission mode revises data message.One radio-paging form coding module 304 receives the DGPS that module 302 transmits and revises the signal that data message is encoded into a wireless transmission form in order to DGPS is revised data message.One radio-paging emitting mould train 306 is amplified in order to the signal of wireless transmission form that radio-paging form coding module 304 is transmitted, to form radiofrequency signal.One antenna assembly 308 in order to receiving the radiofrequency signal that radio-paging emitting mould train 306 transmits, and outwards transmits radiofrequency signal with Wireless transmission mode.
One radio-paging receives module 310, is used for the radiofrequency signal that receiving antenna device 308 transmits.One radio frequency frequency reducing module 312 is used to receive radio-paging and receives the radiofrequency signal that module 310 transmits, to produce a fundamental frequency signal.One decoding module 314 is decoded in order to the fundamental frequency signal that radio frequency frequency reducing module 312 is transmitted, and revises data message to obtain DGPS.
One GPS receives module 318, in order to receive the signal of at least four satellites, to obtain the observation virtual location that GPS receives module 318 places.One location correcting module 316 utilizes the DGPS that decoding module 314 transmits to revise data message, revises doing one from the observation virtual location of GPS reception module 318, does one with the position that GPS is received module 318 places and locatees more accurately.
According to another preferred embodiment of the present invention, utilize the DGPS structure of radio-paging as follows with Fig. 3 explanation: a GPS receives module 502 again, in order to receive the signal of at least four satellites, to obtain the observation virtual location that GPS receives module 502 places.One DGPS (for example: computer) GPS is received the observation virtual location at module 502 places and the exact position at GPS reception module 502 places and make comparisons, revise data message to obtain a DGPS revises data message computing module 504.One radio-paging form coding module 506 is revised the signal that data message is encoded into a wireless transmission form in order to DGPS is revised the DGPS that data message computing module 504 transmits.One radio-paging emitting mould train 508 is amplified in order to the signal of wireless transmission form that radio-paging form coding module 506 is transmitted, to form radiofrequency signal.One antenna assembly 510 in order to receiving the radiofrequency signal that radio-paging emitting mould train 508 transmits, and outwards transmits radiofrequency signal with Wireless transmission mode.
One radio-paging receives module 512, is used for the radiofrequency signal that receiving antenna device 510 transmits.One radio frequency frequency reducing module 514 is used to receive the radiofrequency signal that radio reception module 512 transmits, to produce a fundamental frequency signal.One decoding module 516 is decoded in order to the fundamental frequency signal that radio frequency frequency reducing module 514 is transmitted, and revises data message to obtain DGPS.
One GPS receives module 520, in order to receive the signal of at least four satellites, to obtain the observation virtual location that GPS receives module 520 places.One location correcting module 518 utilizes the DGPS that decoding module 516 transmits to revise data message, revises doing one from the observation virtual location of GPS reception module 520, does one with the position that GPS is received module 520 places and locatees more accurately.
In the present invention, DGPS revises data message and comprises distance error correction data message at least, and the transformat of DGPS correction data message comprises RTCM SC-104 form at least.At least comprise FLEX, ReFLEX, InFLEXion, POSAG, ERMES, APOC or the like as for the radio-paging form.Because the radio-paging form is various, can't describe in detail one by one, be that example illustrates advantage of the present invention therefore with wherein FLEX.
Claims (27)
1, a kind of radio paging system that utilizes transmits the differential Global Positioning System that DGPS revises data message, it is characterized in that: this system comprises at least: a DGPS revises data message and receives module, revises data message in order to receive a DGPS through one first transformat coding; One radio-paging form coding module, revise data message with this DGPS and receive module and couple, revise the signal that data message is encoded into a radio-paging form in order to this DGPS is revised this DGPS that data message receives this first transformat that module transmits; One radio-paging emitting mould train couples with this radio-paging form coding module, amplifies in order to this signal of this radio-paging form that this radio-paging form coding module is transmitted, to form this radiofrequency signal; One antenna assembly couples mutually with this radio-paging emitting mould train, in order to receiving this radiofrequency signal that this radio-paging emitting mould train transmits, and this radiofrequency signal is outwards transmitted with Wireless transmission mode; One radio-paging receives module, is used for receiving this radiofrequency signal that this antenna assembly transmits; One radio frequency frequency reducing module receives module with this radio-paging and is coupled, and is to be used to receive this radio-paging to receive this radiofrequency signal that module transmits, to produce a fundamental frequency signal; And a decoding module, be coupled with this radio frequency frequency reducing module, decode in order to this fundamental frequency signal that this radio frequency frequency reducing module is transmitted, revise data message with this DGPS that obtains this first transformat.
2, the differential Global Positioning System of utilizing radio-paging as claimed in claim 1 is characterized in that: the first wherein above-mentioned transformat comprises RTCM SC-104 form at least.
3, the differential Global Positioning System of utilizing radio-paging as claimed in claim 1 is characterized in that: the load mode that the DGPS of wherein above-mentioned first transformat coding revises data message comprise at least following one of them: wireless transmission method, wire transmission mode.
4, the differential Global Positioning System of utilizing radio-paging as claimed in claim 1 is characterized in that: wherein above-mentioned DGPS revises data message and comprises distance error correction data message at least.
5, the differential Global Positioning System of utilizing radio-paging as claimed in claim 1 is characterized in that: wherein above-mentioned radio-paging form comprise at least following one of them: FLEX, ReFLEX, InFLEXion, POSAG, ERMES, APOC.
6, the differential Global Positioning System of utilizing radio-paging as claimed in claim 1, it is characterized in that: wherein above-mentioned system more comprises: a GPS receives module, in order to receive the signal of multi-satellite, to obtain the observation position that this GPS receives the module place; And a location correcting module, be coupled with this decoding module, utilize this DGPS that this decoding module transmits to revise data message, to receive this observation position do one correction of module from this GPS.
7, the differential Global Positioning System of utilizing radio-paging as claimed in claim 6 is characterized in that: wherein above-mentioned multi-satellite comprises four satellites at least.
8, a kind of radio paging system that utilizes transmits the differential Global Positioning System that DGPS revises data message, it is characterized in that: this system comprises at least: a DGPS revises data message and receives module, revises data message in order to receive a DGPS through one first transformat coding; One radio-paging form coding module, revise data message with this DGPS and receive module and couple, revise the signal that data message is encoded into a radio-paging form in order to this DGPS is revised this DGPS that data message receives this first transformat that module transmits; One radio-paging emitting mould train couples with this radio-paging form coding module, amplifies in order to this signal of this radio-paging form that this radio-paging form coding module is transmitted, to form this radiofrequency signal; And an antenna assembly, couple mutually with this radio-paging emitting mould train, in order to receiving this radiofrequency signal that this radio-paging emitting mould train transmits, and this radiofrequency signal is outwards transmitted with Wireless transmission mode.
9, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8 is characterized in that: the first wherein above-mentioned transformat comprises RTCM SC-104 form at least.
10, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8 is characterized in that: the load mode that the DGPS of wherein above-mentioned first transformat coding revises data message comprise at least following one of them: wireless transmission method, wire transmission mode.
11, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8 is characterized in that: wherein above-mentioned DGPS revises data message and comprises distance error correction data message at least.
12, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8 is characterized in that: wherein above-mentioned radio-paging form comprise at least following one of them: FLEX, KeFLEX, InFLEXion, POSAG, ERMES, APOC.
13, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8, it is characterized in that: wherein above-mentioned system more comprises: a radio-paging receives module, is used for receiving this radiofrequency signal that this antenna assembly transmits; One radio frequency frequency reducing module receives module with this radio-paging and is coupled, and is to be used to receive this radio-paging to receive this radiofrequency signal that module transmits, to produce a fundamental frequency signal; And a decoding module, be coupled with this radio frequency frequency reducing module, decode in order to this fundamental frequency signal that this radio frequency frequency reducing module is transmitted, revise data message with this DGPS that obtains this first transformat.
14, the differential Global Positioning System of utilizing radio-paging as claimed in claim 8, it is characterized in that: wherein above-mentioned system more comprises: a radio-paging receives module, is used for receiving this radiofrequency signal that this antenna assembly transmits; One radio frequency frequency reducing module receives module with this radio-paging and is coupled, and is to be used to receive this radio-paging to receive this radiofrequency signal that module transmits, to produce a fundamental frequency signal; One decoding module is coupled with this radio frequency frequency reducing module, decodes in order to this fundamental frequency signal that this radio frequency frequency reducing module is transmitted, and revises data message with this DGPS that obtains this first transformat; One GPS receives module, in order to receive the signal of multi-satellite, to obtain the observation position that this GPS receives the module place; One location correcting module is coupled with this decoding module, utilizes this DGPS correction data message that this decoding module transmits, and does a correction to see then the position from this of this GPS reception module.
15, a kind of radio paging system that utilizes transmits the differential Global Positioning System that DGPS revises data message, it is characterized in that: this system comprises at least: one the one GPS receives module, in order to receive the signal of multi-satellite, to obtain the observation position that a GPS receives the module place; One DGPS revises data message computing module, receive this observation position that a GPS receives the module place, and make comparisons with the physical location that this GPS receives the module place, revise data message to obtain a DGPS, and this DGPS is revised data message be encoded into one first transformat; One radio-paging form coding module, revise data message computing module with this DGPS and couple, revise the signal that data message is encoded into a radio-paging form in order to this DGPS that this DGPS is revised this first transformat that data message computing module transmits; One radio-paging emitting mould train couples with this radio-paging form coding module, amplifies in order to this signal of this radio-paging form that this radio-paging form coding module is transmitted, to form this radiofrequency signal; And an antenna assembly, couple mutually with this radio-paging emitting mould train, in order to receiving this radiofrequency signal that this radio-paging emitting mould train transmits, and this radiofrequency signal is outwards transmitted with Wireless transmission mode.
16, the differential Global Positioning System of utilizing radio-paging as claimed in claim 15 is characterized in that: the first wherein above-mentioned transformat comprises RTCM SC-104 form at least.
17, the differential Global Positioning System of utilizing radio-paging as claimed in claim 15 is characterized in that: the load mode that the DGPS of wherein above-mentioned first transformat coding revises data message comprise at least following one of them: wireless transmission method, wire transmission mode.
18, the differential Global Positioning System of utilizing radio-paging as claimed in claim 15 is characterized in that: wherein above-mentioned DGPS revises data message and comprises distance error correction data message at least.
19, the differential Global Positioning System of utilizing radio-paging as claimed in claim 15 is characterized in that: wherein above-mentioned radio-paging form comprise at least following one of them: FLEX, ReFLEX, InFLEXion, POSAG, ERMES, APOC.
20, the differential Global Positioning System of utilizing radio-paging as claimed in claim 15, it is characterized in that: wherein above-mentioned system more comprises: a radio-paging receives module, is used for receiving this radiofrequency signal that this antenna assembly transmits; One radio frequency frequency reducing module receives module with this radio-paging and is coupled, and is used to receive this radio-paging and receives this radiofrequency signal that module transmits, to produce a fundamental frequency signal; And a decoding module, be coupled with this radio frequency frequency reducing module, decode in order to this fundamental frequency signal that this radio frequency frequency reducing module is transmitted, revise data message with this DGPS that obtains this first transformat.
21, the differential Global Positioning System of utilizing radio-paging as claimed in claim 20, it is characterized in that: wherein above-mentioned system more comprises: one the 2nd GPS receives module, in order to receive the signal of this multi-satellite, to obtain the observation position that the 2nd GPS receives the module place; And a location correcting module, be coupled with this decoding module, utilize this DGPS that this decoding module transmits to revise data message, to receive this observation position do one correction of module from the 2nd GPS.
22, a kind of radio paging system that utilizes transmits the differential Global Positioning System that DGPS revises data message, it is characterized in that: this system comprises at least: one the one GPS receives module, in order to receive the signal of multi-satellite, to obtain the observation position that a GPS receives the module place; One DGPS revises data message computing module, receive this observation position that a GPS receives the module place, and make comparisons with the physical location that this GPS receives the module place, revise data message to obtain a DGPS, and this DGPS is revised data message be encoded into one first transformat; One radio-paging form coding module, revise data message computing module with this DGPS and couple, revise the signal that data message is encoded into a radio-paging form in order to this DGPS that this DGPS is revised this first transformat that data message computing module transmits; One radio-paging emitting mould train couples with this radio-paging form coding module, amplifies in order to this signal of this radio-paging form that this radio-paging form coding module is transmitted, to form this radiofrequency signal; One antenna assembly couples mutually with this radio-paging emitting mould train, in order to receiving this radiofrequency signal that this radio-paging emitting mould train transmits, and this radiofrequency signal is outwards transmitted with Wireless transmission mode; One radio-paging receives module, is used for receiving this radiofrequency signal that this antenna assembly transmits; One radio frequency frequency reducing module receives module with this radio-paging and is coupled, and is used to receive this radio-paging and receives this radiofrequency signal that module transmits, to produce a fundamental frequency signal; And a decoding module, be coupled with this radio frequency frequency reducing module, decode in order to this fundamental frequency signal that this radio frequency frequency reducing module is transmitted, revise data message with this DGPS that obtains this first transformat.
23, the differential Global Positioning System of utilizing radio-paging as claimed in claim 22 is characterized in that: the first wherein above-mentioned transformat comprises RTCM SC-104 form at least.
24, the differential Global Positioning System of utilizing radio-paging as claimed in claim 22 is characterized in that: the load mode that the DGPS of wherein above-mentioned first transformat coding revises data message comprise at least following one of them: wireless transmission method, wire transmission mode.
25, the differential Global Positioning System of utilizing radio-paging as claimed in claim 22 is characterized in that: wherein above-mentioned DGPS revises data message and comprises distance error correction data message at least.
26, the differential Global Positioning System of utilizing radio-paging as claimed in claim 22 is characterized in that: wherein above-mentioned radio-paging form comprise at least following one of them: FLEX, ReFLEX, InFLEXion, POSAG, ERMES, APOC.
27, the differential Global Positioning System of utilizing radio-paging as claimed in claim 22, it is characterized in that: wherein above-mentioned system more comprises: one the 2nd GPS receives module, in order to receive the signal of this multi-satellite, to obtain the observation position that the 2nd GPS receives the module place, and one the location correcting module, be coupled with this decoding module, this DGPS that utilizes this decoding module to transmit revises data message, this observation position that receives module from the 2nd GPS is done one revise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99124983A CN1300947A (en) | 1999-12-23 | 1999-12-23 | Differentiating GPS using radio paging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99124983A CN1300947A (en) | 1999-12-23 | 1999-12-23 | Differentiating GPS using radio paging |
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| Publication Number | Publication Date |
|---|---|
| CN1300947A true CN1300947A (en) | 2001-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99124983A Pending CN1300947A (en) | 1999-12-23 | 1999-12-23 | Differentiating GPS using radio paging |
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| CN (1) | CN1300947A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008671B (en) * | 2006-12-29 | 2011-09-28 | 深圳市赛格导航科技股份有限公司 | Method, system and device for accurately navigating mobile station |
| CN102967868A (en) * | 2011-09-01 | 2013-03-13 | 神讯电脑(昆山)有限公司 | Positioning device and signal processing method thereof |
| CN103344844A (en) * | 2013-05-31 | 2013-10-09 | 国家电网公司 | Grid security warning terminal and warning method thereof |
| CN110208826A (en) * | 2019-05-29 | 2019-09-06 | 哈尔滨工程大学 | A kind of digital satellite smart antenna of multimode multi-frequency |
-
1999
- 1999-12-23 CN CN99124983A patent/CN1300947A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101008671B (en) * | 2006-12-29 | 2011-09-28 | 深圳市赛格导航科技股份有限公司 | Method, system and device for accurately navigating mobile station |
| CN102967868A (en) * | 2011-09-01 | 2013-03-13 | 神讯电脑(昆山)有限公司 | Positioning device and signal processing method thereof |
| CN102967868B (en) * | 2011-09-01 | 2015-01-21 | 神讯电脑(昆山)有限公司 | Positioning device and signal processing method thereof |
| CN103344844A (en) * | 2013-05-31 | 2013-10-09 | 国家电网公司 | Grid security warning terminal and warning method thereof |
| CN103344844B (en) * | 2013-05-31 | 2015-09-30 | 国家电网公司 | The alarming method for power of power grid security warning terminal |
| CN110208826A (en) * | 2019-05-29 | 2019-09-06 | 哈尔滨工程大学 | A kind of digital satellite smart antenna of multimode multi-frequency |
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