CN104035103A - Method for improving navigation mark positioning precision through sub-area networking - Google Patents

Method for improving navigation mark positioning precision through sub-area networking Download PDF

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Publication number
CN104035103A
CN104035103A CN201410318703.9A CN201410318703A CN104035103A CN 104035103 A CN104035103 A CN 104035103A CN 201410318703 A CN201410318703 A CN 201410318703A CN 104035103 A CN104035103 A CN 104035103A
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China
Prior art keywords
equipment
main equipment
subregion
remote server
interface
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Application number
CN201410318703.9A
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CN104035103B (en
Inventor
李文勇
覃柳贤
陈向进
卢瀚清
邓海
王连华
关则兴
张国政
韦著华
石方梅
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Liuzhou Guangxi Zhuang Autonomous Region Navigation Channel Management Board
Guangxi Yuan Chang Bridges In Highway Engineering Co Ltd
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Liuzhou Guangxi Zhuang Autonomous Region Navigation Channel Management Board
Guangxi Yuan Chang Bridges In Highway Engineering Co Ltd
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Application filed by Liuzhou Guangxi Zhuang Autonomous Region Navigation Channel Management Board, Guangxi Yuan Chang Bridges In Highway Engineering Co Ltd filed Critical Liuzhou Guangxi Zhuang Autonomous Region Navigation Channel Management Board
Priority to CN201410318703.9A priority Critical patent/CN104035103B/en
Publication of CN104035103A publication Critical patent/CN104035103A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
    • G01S19/07Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections

Abstract

The invention discloses a method for improving navigation mark positioning precision through sub-area networking. The method includes the steps that step1, firstly, according to water area conditions, a water area is divided into multiple middle-sized sub-areas and then divided into multiple small sub-areas, and then reference station equipment is installed in each middle-sized sub-area and used for generating difference deviation correcting parameters; step2, a positioning device is installed in each small sub-area and comprises main equipment and one or more auxiliary equipment, and the main equipment is in communicated with the auxiliary equipment through wireless local area networks; step3, the main equipment receives the difference deviation correcting parameters issued by a remote server and transmits the parameters to the auxiliary equipment, the main equipment and the auxiliary equipment correct own positioning data, and then the data are uploaded to the remote server through the main equipment. High cost for establishing a CORS difference station can be reduced, the same positioning effect can be achieved, burdens of the server and network communication cost can be reduced through sub-area networking, and power consumption of the auxiliary equipment can be lowered.

Description

A kind of method of utilizing subregion networking to improve navigation mark positioning precision
Technical field
The present invention relates to a kind of location technology, be specifically related to a kind of method of utilizing subregion networking to improve navigation mark positioning precision; It is mainly used in navigation mark control and the location in cruiseway, seashore navigation channel.
Background technology
Now, gps satellite location technology has obtained good application in many industries, and the positioning precision of normal domestic has also reached 10 meters of left and right, if adopt differential technique, can be lifted to 5 meters of left and right.But the positioning precision of 5 meters is far from being enough for the positioning requirements of natural navigable waterway.In natural navigable waterway, boat groove often very narrow, boats and ships pasting often the trough rim that navigate rock navigate by water, particularly particularly like this at some dangerous shoal.So the positioning precision of 5 meters often can not meet the needs of navigation channel management and ship's navigation, is necessary positioning precision to bring up to 1 meter of left and right, even higher.Now, use high precision instrument, under the cooperation at difference station, positioning precision can reach centimetre-sized, but its use cost is very high.
The application of navigation mark remote control telemetering system, has improved the management level of navigation mark greatly, has reduced managerial personnel's labour intensity, and the actual conditions that make managerial personnel just can grasp in real time navigation mark in office, can pinpoint the problems in time and deal with problems.Realize high-precision localizing objects if can be lowered into this locality, will more be conducive to the promotion and application of navigation mark remote control telemetering system.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of method of utilizing subregion networking to improve navigation mark positioning precision is provided; It has not only ensured hi-Fix, and use cost is low, is conducive to navigation mark remote control telemetering system and applies in a large amount of places of arranging locating and monitoring equipment of the needs such as navigation channel, harbour.
To achieve these goals, the present invention has adopted following technical scheme:
Utilize subregion networking to improve a method for navigation mark positioning precision, comprise the following steps:
Step 1, first according to status of the water area, carries out subregion by the waters of needs location, is first divided into several medium-sized subregions, is further subdivided into several little subregions below each medium-sized subregion; Then each medium-sized subregion is investigated, whether base station equipment has been installed; In the time there is no base station equipment in medium-sized subregion, in this medium-sized subregion, choose a suitable fixed position, a stage fiducial station equipment is installed; The automatic compute location deviation of described base station equipment, produces difference correction parameter and is transferred to remote server by 3G communication module;
Step 2, mounting and positioning device in each little subregion; Described locating device comprises that a main equipment and one are above from equipment; Described main equipment and from carrying out data wireless transmission by 2.4G wireless communication module between equipment; Described main equipment carries out data wireless transmission by 3G communication module and remote server;
Step 3, after being optimized processing, the difference correction parameter that described remote server is come base station device transmission is handed down to the main equipment in corresponding little subregion, main equipment is received after difference correction parameter, locator data to self is revised, and by 2.4G wireless communication module, the difference parameter of rectifying a deviation is sent to from equipment simultaneously; Described from equipment is received difference correction parameter, the locator data of self is revised, then revised locator data and the work state information of self are sent to main equipment; Main equipment receives from the locator data and work state information of equipment, they are sent to remote server together with the revised locator data of main equipment self with work state information, realize remote server locating device is carried out to hi-Fix monitoring.
In the present invention, base station equipment is arranged on (being suitable fixed position) on some fixing Channel Constructions, as the roof of navigation channel management station, fix beacon etc. on the bank, it can record the terrestrial coordinate of installation site, and can produce by algorithm the difference correction parameter of the location use in effective coverage; And the covering radius of each base station equipment is to be no more than 15km as best (this is also the magnitude range of medium-sized subregion).In the little subregion of dividing, it is above from equipment that each little subregion arranges a main equipment and one, and this little subregion and communicating by letter of remote server are need be by main equipment, main equipment and from communicating by the cheap 2.4G radio communication mold block assembly WLAN (wireless local area network) of use cost between equipment; Power consumption and the use cost of equipment can be greatly reduced like this.
Further illustrate described main equipment and mainly being formed by equipment box and the control circuit board that is fixedly mounted on equipment box inside respectively from equipment as of the present invention; Described control circuit board is provided with several wiring draw-in grooves, and master controller, GPS locating module and 2.4G wireless communication module are installed respectively on described wiring draw-in groove; On described equipment box, be also provided with gps antenna interface, 2.4G radio antenna interface, serial line interface, LED navigation light interface and power interface; Described gps antenna interface is connected with 2.4G wireless communication module with GPS locating module respectively with 2.4G radio antenna interface; Described serial line interface, LED navigation light interface are connected with master controller respectively with power interface; The control circuit board of described main equipment is also provided with 3G communication module, is also provided with 3G communication antenna interface on the equipment box of main equipment; Described 3G communication antenna interface is connected with 3G communication module.
In the present invention, the structural design of base station equipment is the same with the main equipment of locating device, and just the parameter configuration of their master controller inside is different.
Further illustrate as of the present invention, described GPS locating module is supported double serial port communication, and a serial ports is used for transmitting control command and locating information, and a serial ports is used for transmitting differential corrections parameter.
Further illustrate as of the present invention, described serial line interface is for AccessPort or external serial ports type sensor; Described LED navigation light interface supports I/O to control and serial ports control.In the present invention, serial line interface, LED navigation light interface and power interface all can adopt water proof type aviation plug.
In the present invention, described main equipment and be also provided with reset circuit and working station indicator from the control circuit board of equipment.Described main equipment and all adopt water proof type equipment box from the equipment box of equipment.
Further illustrate as of the present invention, described remote server is a computing machine with public network IP, and Mysql Database Systems are installed.
Further illustrate as of the present invention, described remote server issues differential corrections parameter and adopts intermittently transmission method, be specially: first in remote server, set the quiescent interval, when remote server is received the differential corrections parameter of base station, whether the current time that first judges this base station equipment reaches the quiescent interval, does not reach the quiescent interval just to abandon; In the time reaching the quiescent interval, the main equipment of browsing apparatus list the inside, differential corrections parameter by SOCKET port be handed down to the same medium-sized subregion of base station equipment in main equipment.
Advantage of the present invention:
1. in the present invention, the structure for the hardware device of locating is substantially the same, can realize base station equipment, main equipment and 3 kinds of mode of operations from equipment with the different module of insertion by configuration parameter, utilize the difference positioning function in simple equipment feasible region, greatly improve positioning precision, reduced the construction cost of building equal accuracy CORS station.
Main equipment in same little subregion and from equipment by 2.4G wireless communication module, set up the WLAN (wireless local area network) of this little subregion, carry out data and mutually transmit; Then collect by main equipment and transmit the information data from equipment, having reduced the expense of 3G communication, having reduced the communications burden of remote server simultaneously, having improved the efficiency of difference location.
3. by the intermittently transmission of difference correction parameter, reduce information traffic volume, reduce the power consumption of equipment.
Brief description of the drawings
Fig. 1 is principle of work of the present invention and system architecture schematic diagram.
Fig. 2 is composition and the structural representation of main equipment of the present invention.
Fig. 3 is the composition from equipment of the present invention and structural representation.
Reference numeral: 1-equipment box, 2-control circuit board, 3-master controller, 4-2.4G wireless communication module, 5-2.4G radio antenna interface, 6-3G communicator, 7-3G communication antenna interface, 8-GPS locating module, 9-GPS antennal interface, 10-working station indicator, 11-serial line interface, 12-LED navigation light interface, 13-power interface.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described, but protection scope of the present invention is not only confined to following specific embodiment.
Embodiment 1:
As Figure 1-3, a kind of method of utilizing subregion networking to improve navigation mark positioning precision, comprises the following steps:
Step 1, first according to status of the water area, carries out subregion by the waters of needs location, is first divided into several medium-sized subregions, is further subdivided into several little subregions below each medium-sized subregion; Then each medium-sized subregion is investigated, whether base station equipment has been installed; In the time there is no base station equipment in medium-sized subregion, in this medium-sized subregion, choose a suitable fixed position, a stage fiducial station equipment is installed; The automatic compute location deviation of described base station equipment, produces difference correction parameter and is transferred to remote server by 3G communication module;
Step 2, mounting and positioning device in each little subregion; Described locating device comprises that a main equipment and one are above from equipment; Described main equipment and from carrying out data wireless transmission by 2.4G wireless communication module between equipment; Described main equipment carries out data wireless transmission by 3G communication module and remote server;
Step 3, after being optimized processing, the difference correction parameter that described remote server is come base station device transmission is handed down to the main equipment in corresponding little subregion, main equipment is received after difference correction parameter, locator data to self is revised, and by 2.4G wireless communication module, the difference parameter of rectifying a deviation is sent to from equipment simultaneously; Described from equipment is received difference correction parameter, the locator data of self is revised, then revised locator data and the work state information of self are sent to main equipment; Main equipment receives from the locator data and work state information of equipment, they are sent to remote server together with the revised locator data of main equipment self with work state information, realize remote server locating device is carried out to hi-Fix monitoring.
Described main equipment and mainly being formed by equipment box 1 and the control circuit board 2 that is fixedly mounted on equipment box 1 inside respectively from equipment; Described control circuit board 2 is provided with several wiring draw-in grooves, and master controller 3, GPS locating module 8 and 2.4G wireless communication module 4 are installed respectively on described wiring draw-in groove; On described casing 1, be also provided with gps antenna interface 9,2.4G radio antenna interface 5, serial line interface 11, LED navigation light interface 12 and power interface 13; Described gps antenna interface 9 is connected with 2.4G wireless communication module 4 with GPS locating module 8 respectively with 2.4G radio antenna interface 5; Described serial line interface 11, LED navigation light interface 12 and power interface 13 are connected with master controller 3 respectively; The control circuit board 2 of described main equipment is also provided with 3G communication module 6, is also provided with 3G communication antenna interface 7 on the equipment box of main equipment; Described 3G communication antenna interface 7 is connected with 3G communication module 6.Described GPS locating module is supported double serial port communication, and a serial ports is used for transmitting control command and locating information, and a serial ports is used for transmitting differential corrections parameter.Described serial line interface 11 is for AccessPort; Also can external serial ports type sensor; Described LED navigation light interface 12 supports I/O to control and serial ports control.
Described remote server is a computing machine with public network IP, and Mysql Database Systems are installed.Described remote server issues differential corrections parameter and adopts intermittently transmission method, be specially: first in remote server, set the quiescent interval, when remote server is received the differential corrections parameter of base station, whether the current time that first judges this base station equipment reaches the quiescent interval, does not reach the quiescent interval just to abandon; In the time reaching the quiescent interval, the main equipment of browsing apparatus list the inside, differential corrections parameter by SOCKET port be handed down to the same medium-sized subregion of base station equipment in main equipment.
The method of this embodiment can be saved the great expense of building CORS difference station, reaches equal locating effect, and subregion networking can reduce server burden and network service expense, reduces the power consumption from equipment.

Claims (6)

1. utilize subregion networking to improve a method for navigation mark positioning precision, it is characterized in that: comprise the following steps:
Step 1, first according to status of the water area, carries out subregion by the waters of needs location, is first divided into several medium-sized subregions, is further subdivided into several little subregions below each medium-sized subregion; Then each medium-sized subregion is investigated, whether base station equipment has been installed; In the time there is no base station equipment in medium-sized subregion, in this medium-sized subregion, choose a suitable fixed position, a stage fiducial station equipment is installed; The automatic compute location deviation of described base station equipment, produces difference correction parameter and is transferred to remote server by 3G communication module;
Step 2, mounting and positioning device in each little subregion; Described locating device comprises that a main equipment and one are above from equipment; Described main equipment and from carrying out data wireless transmission by 2.4G wireless communication module between equipment; Described main equipment carries out data transmission by 3G communication module and remote server;
Step 3, is handed down to the main equipment in corresponding little subregion after the difference correction parameter that described remote server is come base station device transmission is optimized processing; Described main equipment is received after difference correction parameter, and the locator data of self is revised, and by 2.4G wireless communication module, the difference parameter of rectifying a deviation is sent to from equipment simultaneously; Described from equipment is received difference correction parameter, the locator data of self is revised, then revised locator data and the work state information of self are sent to main equipment; Main equipment receives from the positional parameter and work state information of equipment, they are sent to remote server together with the revised locator data of main equipment self with work state information, realize remote server locating device is carried out to hi-Fix monitoring.
2. the method for utilizing subregion networking to improve navigation mark positioning precision according to claim 1, is characterized in that: described main equipment and from equipment respectively mainly by equipment box (1) be fixedly mounted on inner control circuit board (2) formation of equipment box (1); Described control circuit board (2) is provided with several wiring draw-in grooves, and master controller (3), GPS locating module (8) and 2.4G wireless communication module (4) are installed respectively on described wiring draw-in groove; On described equipment box (1), be also provided with gps antenna interface (9), 2.4G radio antenna interface (5), serial line interface (11), LED navigation light interface (12) and power interface (13); Described gps antenna interface (9) is connected with 2.4G wireless communication module (4) with GPS locating module (8) respectively with 2.4G radio antenna interface (5); Described serial line interface (11), LED navigation light interface (12) and power interface (13) are connected with master controller (3) respectively; The control circuit board (2) of described main equipment is also provided with 3G communication module (6), on the equipment box (1) of main equipment, is also provided with 3G communication antenna interface (7); Described 3G communication antenna interface (7) is connected with 3G communication module (6).
3. the method for utilizing subregion networking to improve navigation mark positioning precision according to claim 2, it is characterized in that: described GPS locating module (8) is supported double serial port communication, a serial ports is used for transmitting control command and locating information, and a serial ports is used for transmitting differential corrections parameter.
4. improve the method for navigation mark positioning precision according to the subregion networking that utilizes described in claim 2 or 3, it is characterized in that: described serial line interface (11) is for AccessPort or external serial ports type sensor; Described LED navigation light interface (12) supports I/O to control and serial ports control.
5. the method for utilizing subregion networking to improve navigation mark positioning precision according to claim 1, is characterized in that: described remote server is a computing machine with public network IP, and Mysql Database Systems are installed.
6. utilize according to claim 1 or 5 subregion networking to improve the method for navigation mark positioning precision, it is characterized in that: described remote server issues differential corrections parameter and adopts intermittently transmission method, be specially: first in remote server, set the quiescent interval, when remote server is received the differential corrections parameter of base station, whether the current time that first judges this base station equipment reaches the quiescent interval, does not reach the quiescent interval just to abandon; In the time reaching the quiescent interval, the main equipment of browsing apparatus list the inside, differential corrections parameter by SOCKET port be handed down to the same medium-sized subregion of base station equipment in main equipment.
CN201410318703.9A 2014-07-04 2014-07-04 A kind of method utilizing subregion networking to improve navigation mark positioning precision Active CN104035103B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107390241A (en) * 2017-08-09 2017-11-24 长江重庆航道局 It is a kind of to be accurately positioned navigation mark and determine whether the method in reef hazardous area
CN107580071A (en) * 2017-09-28 2018-01-12 美的智慧家居科技有限公司 Master-slave equipment upgrade method, device and its equipment
CN108226956A (en) * 2016-12-22 2018-06-29 千寻位置网络有限公司 A kind of differential data protection processing method and its system
CN114097586A (en) * 2021-11-08 2022-03-01 天津市科睿思奇智控技术有限公司 Positioning and deviation rectifying method and system for translation type sprinkling machine
CN114137988A (en) * 2021-12-01 2022-03-04 山东新坐标智能装备有限公司 Robot path navigation deviation rectifying method, system and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040119638A1 (en) * 2002-09-25 2004-06-24 Fagan John E. Navigation system using locally augmented GPS
CN101294680A (en) * 2007-04-29 2008-10-29 田捷 Remote-metering locatable luminous color-variable beacon light core
US20130076562A1 (en) * 2010-06-11 2013-03-28 Electronics And Telecommunications Research Institute Precise gps device and method using a wireless ap
CN203204407U (en) * 2013-03-15 2013-09-18 中华人民共和国上海海事局连云港航标处 Navigation mark telemetering and remote control system
CN103364796A (en) * 2013-07-17 2013-10-23 上海伽利略导航有限公司 Local area network positioning terminal differential data providing system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040119638A1 (en) * 2002-09-25 2004-06-24 Fagan John E. Navigation system using locally augmented GPS
CN101294680A (en) * 2007-04-29 2008-10-29 田捷 Remote-metering locatable luminous color-variable beacon light core
US20130076562A1 (en) * 2010-06-11 2013-03-28 Electronics And Telecommunications Research Institute Precise gps device and method using a wireless ap
CN203204407U (en) * 2013-03-15 2013-09-18 中华人民共和国上海海事局连云港航标处 Navigation mark telemetering and remote control system
CN103364796A (en) * 2013-07-17 2013-10-23 上海伽利略导航有限公司 Local area network positioning terminal differential data providing system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
鲁照权等: "多基站GPS 差分定位在航标遥测遥控中应用", 《通信技术》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108226956A (en) * 2016-12-22 2018-06-29 千寻位置网络有限公司 A kind of differential data protection processing method and its system
CN108226956B (en) * 2016-12-22 2021-08-03 千寻位置网络有限公司 Differential data protection processing method and system
CN107390241A (en) * 2017-08-09 2017-11-24 长江重庆航道局 It is a kind of to be accurately positioned navigation mark and determine whether the method in reef hazardous area
CN107580071A (en) * 2017-09-28 2018-01-12 美的智慧家居科技有限公司 Master-slave equipment upgrade method, device and its equipment
CN114097586A (en) * 2021-11-08 2022-03-01 天津市科睿思奇智控技术有限公司 Positioning and deviation rectifying method and system for translation type sprinkling machine
CN114097586B (en) * 2021-11-08 2022-09-30 天津市科睿思奇智控技术有限公司 Positioning and deviation rectifying method and system for translation type sprinkling machine
CN114137988A (en) * 2021-12-01 2022-03-04 山东新坐标智能装备有限公司 Robot path navigation deviation rectifying method, system and storage medium

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