CN209821397U - RTK differential positioning device based on communication satellite - Google Patents
RTK differential positioning device based on communication satellite Download PDFInfo
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- CN209821397U CN209821397U CN201920451028.5U CN201920451028U CN209821397U CN 209821397 U CN209821397 U CN 209821397U CN 201920451028 U CN201920451028 U CN 201920451028U CN 209821397 U CN209821397 U CN 209821397U
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- 238000004891 communication Methods 0.000 title claims abstract description 75
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- 238000005516 engineering process Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 3
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Abstract
The utility model discloses a RTK differential positioning device based on communication satellite, including reference station and mobile station, it is provided with respectively: the positioning system comprises a positioning antenna for receiving satellite positioning information, a positioning plate for demodulating the positioning information and a satellite communication plate for converting the positioning information, wherein the satellite communication plate is connected with the satellite antenna; the satellite communication board modulates the signal sent by the positioning board into a signal conforming to a communication satellite protocol and transmits the signal to a communication satellite through a satellite antenna; the satellite communication boards of the reference station and the mobile station carry out the interaction of the positioning information through the communication satellite. The device provided by the utility model can adopt communication satellite to carry out the location of long distance high accuracy, overcome because radio station transmission distance is limited, can not the defect of long distance RTK location, great improvement the distance limited and traditional network cover the demand of place to high accuracy RTK location.
Description
Technical Field
The utility model belongs to the technical field of the location, a RTK differential positioning device based on communication satellite is related to.
Background
With the improvement of social digital communication information, the satellite positioning technology has new updating iteration and development, and people have stronger and stronger requirements on quick and accurate positioning. The most widely used high-precision positioning technique at present is Real-Time Kinematic (RTK) positioning. The key to the RTK technology is the data transmission technology, and the current RTK transmission technology is mainly the conventional cellular 2G/3G/4G communication technology and station communication. Cellular networks are limited in coverage and communication distance of the stations. For example, in many places, the traditional cellular ground network 2G/3G/4G communication signals cannot be covered, and the communication distance of the radio station is limited; therefore, RTK can not carry out high-precision positioning, only can be used for ordinary single-point positioning, and the positioning precision is greatly influenced, so that the requirement of special industries on high-precision positioning can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem lie in providing a RTK differential positioning device based on communication satellite, overcome the defect of information transmission in the current RTK location, satisfy the requirement of high accuracy location.
The utility model discloses a realize through following technical scheme:
an RTK differential positioning apparatus based on a communication satellite, comprising a reference station and a rover station, each provided with:
the positioning antenna is connected with the positioning plate through a radio frequency signal wire and sends the received positioning information to the positioning plate;
the positioning plate demodulates the positioning information, is connected with the satellite communication plate through a radio frequency connecting wire, demodulates the received positioning information and then sends the demodulated positioning information to the satellite communication plate through the radio frequency connecting wire in a serial port mode;
the satellite communication board is connected with a satellite antenna; the satellite communication board modulates the signal sent by the positioning board into a signal conforming to a communication satellite protocol and transmits the signal to a communication satellite through a satellite antenna;
the satellite communication boards of the reference station and the mobile station carry out the interaction of the positioning information through the communication satellite.
The satellite communication board is connected with the positioning board through a serial port to transmit data between the satellite communication board and the positioning board;
the satellite antenna is connected with the satellite communication board through a radio frequency signal line to receive and transmit data of the mobile station or the reference station.
The communication satellite is an Tiantong number I.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a RTK differential positioning device based on communication satellite, based on the data communication between RTK reference station and the mobile station, adopt the general signal communication satellite of heaven to carry out data transmission, changed and relied on radio station or ground net and 2G/3G/4G to carry out data transmission in the past, avoided can't carry on the defect that RTK location in ground net and 2G/3G/4G signal coverage can't reach the area; the device provided by the utility model can adopt communication satellite to carry out the location of long distance high accuracy, overcome because radio station transmission distance is limited, can not the defect of long distance RTK location, great improvement the distance limited and traditional network cover the demand of place to high accuracy RTK location.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a block diagram of the RTK positioning system of the present invention.
Fig. 3 is a schematic signal flow diagram according to the present invention.
Wherein, 1 is the satellite antenna, 2 is the location antenna, 3 is the satellite communication board, and 4 is the locating plate.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are provided for purposes of illustration and not limitation.
Based on the restriction of the current RTK by the communication distance and the coverage, the utility model discloses utilize the advantage that the communication distance of satellite communication is far away, the coverage is wide, do not receive any complicated geographical condition restriction between two points of communication, propose the RTK differential positioning device based on communication satellite (for example sky leads to one number); the method effectively meets the high-precision positioning requirements of the limitation of the coverage area of a ground network and the traditional cellular 2G/3G/4G and the limitation of the communication distance of a radio station in the traditional RTK device.
Referring to fig. 1 and 2, the utility model discloses a RTK differential positioning device based on communication satellite, including satellite antenna 1, positioning antenna 2, satellite communication board 3 and locating plate 4. Wherein, the positioning plate 4 can be a Beidou positioning plate or a GPS positioning plate or a Beidou/GPS positioning plate; the positioning antenna can be a Beidou antenna or a GPS antenna or a Beidou/GPS antenna. These components are commercially available, and for example, the following models of the satellite antenna 1, the positioning antenna 2, the satellite communication board 3, and the positioning board 4 are used.
The satellite communication board is connected with the positioning board through a serial port, so that data transmission between the satellite communication board and the positioning board is realized; the satellite antenna is connected with the satellite communication board through a radio frequency signal line to realize the data receiving and sending of the mobile station or the reference station; the positioning antenna is connected with the positioning plate through a radio frequency signal wire, so that the positioning information is received.
The satellite antenna is mainly responsible for signal transmission and reception; the positioning antenna is mainly responsible for receiving positioning information; the satellite communication board is mainly responsible for modulating, demodulating, transmitting and receiving data information, and the positioning board is mainly responsible for receiving and analyzing the positioning information.
Specifically, the satellite antenna 1 and the satellite communication board 3 are mutually matched devices, and devices provided by multiple service providers can be selected from the market, for example, the satellite antenna 1 and the satellite communication board 3 can adopt a satellite antenna and a satellite communication board which are matched with an skynet one number;
the positioning antenna 2 and the positioning plate 4 are mutually matched devices, and can select devices provided by multiple service providers from the market, and one set of the positioning antenna 2 and the positioning plate 4 which are matched can obtain positioning information from multiple positioning satellites.
Referring to fig. 3, the positioning process of the present invention is as follows:
1. when the device is used as an RTK reference station, after an electric signal of satellite positioning information (the positioning information is provided by a positioning satellite and is used for acquiring positioning information such as longitude and latitude, height, satellite number, time and the like) is received through a positioning antenna 2, a positioning plate 4 demodulates the electric signal of the received satellite positioning signal and sends the demodulated electric signal to a satellite communication plate 3 through a radio frequency connecting line in a serial port mode; the satellite communication board 3 obtains the positioned electric signal, performs format conversion and protocol coding, modulates the electric signal into a signal conforming to the communication protocol of the skynet one signal, and transmits the signal (which is transmitted to the RTK mobile station to provide positioning data for the RTK mobile station to perform differential solution) through the skynet one signal satellite antenna 1.
Specifically, the data packet is generally in an RTCM format, and mainly includes RTCM2.x, RTCM3.0, and RTCM3.2, and the standard RTCM data packet is composed of a fixed leading word, a reserved word, a definition of a message length, a message, and a 24-bits cyclic redundancy check code. It is also understood that each frame of data packet includes a header, data and a check code, and the check code is verified according to the header plus the data.
2. When the device is used as an RTK mobile station, the satellite antenna 1 of the Tiantong number one receives a signal (positioning information of the RTK mobile station is forwarded by the RTK reference station through the Tiantong number one communication satellite) sent by an RTK reference station (the RTK reference station forwards the RTK mobile station through the Tiantong number one communication satellite), after the Tiantong number one communication board 3 carries out reverse demodulation, decoding and conversion, the positioning board 4 is sent in a serial port mode, and the positioning board 4 processes the obtained signal of the Tiantong number one communication board and the demodulated signal of the positioning information received by the positioning antenna to obtain accurate positioning data.
Whether the apparatus is used as a reference station or a mobile station is set according to the requirements and practical application scenarios.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (3)
1. An RTK differential positioning apparatus based on a communication satellite, comprising a reference station and a rover station, which are respectively provided with:
the positioning antenna is connected with the positioning plate through a radio frequency signal wire and sends the received positioning information to the positioning plate;
the positioning plate demodulates the positioning information, is connected with the satellite communication plate through a radio frequency connecting wire, demodulates the received positioning information and then sends the demodulated positioning information to the satellite communication plate through the radio frequency connecting wire in a serial port mode;
the satellite communication board is connected with a satellite antenna; the satellite communication board modulates the signal sent by the positioning board into a signal conforming to a communication satellite protocol and transmits the signal to a communication satellite through a satellite antenna;
the satellite communication boards of the reference station and the mobile station carry out the interaction of the positioning information through the communication satellite.
2. The RTK differential positioning apparatus based on a communication satellite according to claim 1, wherein the satellite communication board is connected to the positioning board via a serial port for data transmission between the satellite communication board and the positioning board;
the satellite antenna is connected with the satellite communication board through a radio frequency signal line to receive and transmit data of the mobile station or the reference station.
3. The communication satellite based RTK differential positioning apparatus of claim 1, wherein the communication satellite is an astronomical one number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451028.5U CN209821397U (en) | 2019-04-04 | 2019-04-04 | RTK differential positioning device based on communication satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451028.5U CN209821397U (en) | 2019-04-04 | 2019-04-04 | RTK differential positioning device based on communication satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209821397U true CN209821397U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920451028.5U Expired - Fee Related CN209821397U (en) | 2019-04-04 | 2019-04-04 | RTK differential positioning device based on communication satellite |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114302332A (en) * | 2021-12-27 | 2022-04-08 | 中国北方工业有限公司 | Positioning system and method based on narrow-band data broadcasting of Beidou third and all-terrain satellites |
-
2019
- 2019-04-04 CN CN201920451028.5U patent/CN209821397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114302332A (en) * | 2021-12-27 | 2022-04-08 | 中国北方工业有限公司 | Positioning system and method based on narrow-band data broadcasting of Beidou third and all-terrain satellites |
| CN114302332B (en) * | 2021-12-27 | 2023-08-08 | 中国北方工业有限公司 | Positioning system and method based on Beidou No. three and space-time satellite narrowband data broadcasting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |