CN110850362A - Foundation positioning system and method based on scene assistance - Google Patents
Foundation positioning system and method based on scene assistance Download PDFInfo
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- CN110850362A CN110850362A CN201911185433.8A CN201911185433A CN110850362A CN 110850362 A CN110850362 A CN 110850362A CN 201911185433 A CN201911185433 A CN 201911185433A CN 110850362 A CN110850362 A CN 110850362A
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- positioning
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0063—Transmission from base station to mobile station of measured values, i.e. measurement on base station and position calculation on mobile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/10—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals
- G01S19/12—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are telecommunication base stations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
Abstract
The invention discloses a foundation positioning system and method based on scene assistance, wherein the foundation positioning method based on scene assistance comprises the following steps: a receiver receives a base station signal sent by a foundation base station, wherein the base station signal comprises positioning information and positioning environment information; the receiver selects a corresponding positioning mode according to the positioning environment information; and the receiver carries out positioning by utilizing the selected positioning mode and outputs a positioning result. The receiver selects the corresponding positioning mode to position according to the positioning environment information sent by the foundation base station, can quickly realize positioning under various environments, and can automatically switch the positioning mode in the environments, thereby ensuring the continuity of the positioning of the receiver.
Description
Technical Field
The invention belongs to the field of time service, navigation and communication, and particularly relates to a foundation positioning system and method based on scene assistance.
Background
The GNSS satellite is deployed in the high altitude two thousand kilometers away from the ground, the positioning coverage range is wide, but the signal propagation path is complex, and the signal is easily shielded by objects such as buildings, so that the GNSS signal cannot be received or is weak in areas such as tunnels, underground parking lots, markets and the like, and indoor positioning cannot be realized; meanwhile, because the heights of all GNSS satellites from the ground are very close, the vertical positioning accuracy factor Value (VDOP) of the satellites is poor, and the receiver can only be positioned in two dimensions in the environments of an overpass and the like. At this time, the ground-based satellite navigation system can be used for assisting or replacing GNSS satellites to realize high-precision positioning in various special environments. The receiver in the current various ground satellite navigation systems can only realize positioning after receiving more than four ground satellite navigation signals, and once in some special positioning scenes, the receiver can only receive 2-3 ground satellite navigation signals and cannot output positioning results.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a foundation positioning system and a foundation positioning method based on scene assistance.
The purpose of the invention is realized by the following technical scheme: a scene-based aided ground-based positioning system comprising:
the base station comprises a base station signal, a positioning information acquisition unit and a positioning environment information acquisition unit, wherein the base station signal comprises positioning information and positioning environment information of the base station;
and the receiver is used for receiving and resolving the base station signal sent by the foundation base station, selecting a corresponding positioning mode for positioning according to the positioning environment information and outputting a positioning result.
Preferably, the positioning mode includes a one-dimensional positioning mode, a two-dimensional positioning mode and a three-dimensional positioning mode.
Preferably, the positioning information includes base station position information and pseudo-range information.
The foundation positioning method based on scene assistance comprises the following steps:
a receiver receives a base station signal sent by a foundation base station, wherein the base station signal comprises positioning information and positioning environment information of the foundation base station;
the receiver selects a corresponding positioning mode according to the positioning environment information;
and the receiver carries out positioning by utilizing the selected positioning mode and outputs a positioning result.
Preferably, the method for ground-based positioning based on scene assistance further comprises:
encoding the positioning environment;
determining the positioning environment of the foundation base station, and finding out a positioning environment code corresponding to the positioning environment;
and writing the positioning environment code as positioning environment information into a base station signal of the foundation base station.
Preferably, the positioning mode includes a one-dimensional positioning mode, a two-dimensional positioning mode and a three-dimensional positioning mode.
Preferably, the positioning information includes base station position information and pseudo-range information.
The invention has the beneficial effects that: the receiver selects a corresponding positioning mode according to the positioning environment information sent by the foundation base station, and performs positioning by combining the positioning information (base station position information, pseudo-range information and the like), so that the positioning can be quickly realized in various environments, and the positioning mode can be automatically switched in the environments, thereby ensuring the positioning continuity of the receiver.
Drawings
FIG. 1 is a block diagram of a system for locating a foundation based on scene assistance in accordance with the present invention;
FIG. 2 is a diagram of a frame format of a base station signal;
FIG. 3 is a flow chart of a method for determining a location of a foundation based on scene assistance according to the present invention;
FIG. 4 is a flowchart of a method for determining a location of a foundation based on scene assistance according to the present invention;
in the figure, 1-ground base station, 2-receiver.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1-4, the present invention provides a system and method for ground positioning based on scene assistance:
example one
As shown in fig. 1, the scene-based aided ground-based positioning system includes a ground-based base station 1 and a receiver 2.
The base station 1 is configured to send out a base station signal, where the base station signal includes positioning information and positioning environment information of the base station 1, the positioning information includes base station location information, pseudo-range information, and the like, and in some embodiments, a frame format of the base station signal is as shown in fig. 2.
The receiver 2 is configured to receive a base station signal sent by the foundation base station 1, and resolve the base station signal to obtain positioning information and positioning environment information; the receiver 2 also selects a corresponding positioning mode for positioning according to the positioning environment information and outputs a positioning result; the positioning modes include a one-dimensional positioning mode, a two-dimensional positioning mode, a three-dimensional positioning mode, and the like, as shown in table 1.
TABLE 1 positioning environments corresponding to different positioning modes
| (1) One-dimensional positioning mode | (2) Two-dimensional positioning mode | (3) Three-dimensional positioning mode |
| (a) Tunnel | (a) Underground parking lot | (a) Urban overpass |
| (b) Mine shaft | (b) Factory building | (b) Apartment and market |
| (c)… | (c)… | (c)… |
In this embodiment, the receiver 2 selects a corresponding positioning mode to perform positioning according to the positioning environment information sent by the base station 1, and can quickly perform positioning in various environments, and can automatically perform switching of the positioning mode in these environments, thereby ensuring the continuity of positioning of the receiver 2.
Example two
As shown in fig. 3, the method for ground based positioning based on scene assistance includes:
s1, a receiver 2 receives a base station signal sent by a foundation base station 1, wherein the base station signal comprises positioning information and positioning environment information of the foundation base station 1.
The positioning information includes base station position information and pseudorange information.
In some embodiments, the frame format of the base station signal is as shown in fig. 2.
And S2, the receiver 2 selects a corresponding positioning mode according to the positioning environment information, wherein the positioning mode comprises a one-dimensional positioning mode, a two-dimensional positioning mode, a three-dimensional positioning mode and the like, and the positioning mode is shown in the table 1.
And S3, the receiver 2 carries out positioning by utilizing the selected positioning mode and outputs a positioning result.
In this embodiment, the receiver 2 selects a corresponding positioning mode to perform positioning according to the positioning environment information sent by the base station 1, and can quickly perform positioning in various environments, and can automatically perform switching of the positioning mode in these environments, thereby ensuring the continuity of positioning of the receiver 2.
EXAMPLE III
As shown in fig. 4, the method for ground-based positioning based on scene assistance includes:
s1, coding a positioning environment, such as a tunnel, an overpass and the like.
And S2, determining the positioning environment of the foundation base station 1, and finding out the positioning environment code corresponding to the positioning environment.
And S3, writing the positioning environment code serving as positioning environment information into a base station signal of the foundation base station 1.
And S4, receiving a base station signal sent by the foundation base station 1 by the receiver 2, wherein the base station signal comprises the positioning information and the positioning environment information of the foundation base station 1.
The positioning information includes base station position information and pseudorange information.
In some embodiments, the frame format of the base station signal is as shown in fig. 2.
And S5, the receiver 2 selects a corresponding positioning mode according to the positioning environment information, wherein the positioning mode comprises a one-dimensional positioning mode, a two-dimensional positioning mode, a three-dimensional positioning mode and the like, and the positioning mode is shown in the table 1.
And S6, the receiver 2 carries out positioning by utilizing the selected positioning mode and outputs a positioning result.
In this embodiment, the receiver 2 selects a corresponding positioning mode to perform positioning according to the positioning environment information sent by the base station 1, and can quickly perform positioning in various environments, and can automatically perform switching of the positioning mode in these environments, thereby ensuring the continuity of positioning of the receiver 2.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A scene-based aided ground-based positioning system, comprising:
the system comprises a ground base station (1) and a base station control unit, wherein the ground base station (1) is used for sending a base station signal, and the base station signal comprises positioning information and positioning environment information of the ground base station (1);
and the receiver (2) is used for receiving and resolving the base station signal sent by the foundation base station (1), selecting a corresponding positioning mode for positioning according to the positioning environment information, and outputting a positioning result.
2. The scene-based aided ground-based positioning system of claim 1, wherein the positioning modes comprise a one-dimensional positioning mode, a two-dimensional positioning mode and a three-dimensional positioning mode.
3. The scene assisted based ground based positioning system of claim 1, characterized in that the positioning information comprises base station position information and pseudo-range information.
4. The foundation positioning method based on scene assistance is characterized by comprising the following steps:
a receiver (2) receives a base station signal sent by a foundation base station (1), wherein the base station signal comprises positioning information and positioning environment information of the foundation base station (1);
the receiver (2) selects a corresponding positioning mode according to the positioning environment information;
and the receiver (2) carries out positioning by utilizing the selected positioning mode and outputs a positioning result.
5. The method of claim 4, further comprising:
encoding the positioning environment;
determining the positioning environment of the foundation base station (1), and finding out a positioning environment code corresponding to the positioning environment;
and writing the positioning environment code as positioning environment information into a base station signal of the foundation base station (1).
6. The method as claimed in claim 4, wherein the positioning modes include one-dimensional positioning mode, two-dimensional positioning mode and three-dimensional positioning mode.
7. The method of claim 4, wherein the positioning information comprises base station position information and pseudorange information.
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| CN201911185433.8A CN110850362A (en) | 2019-11-27 | 2019-11-27 | Foundation positioning system and method based on scene assistance |
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| CN201911185433.8A CN110850362A (en) | 2019-11-27 | 2019-11-27 | Foundation positioning system and method based on scene assistance |
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