CN107015195B - The method for measuring distance between the position of two base stations - Google Patents
The method for measuring distance between the position of two base stations Download PDFInfo
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- CN107015195B CN107015195B CN201710200347.4A CN201710200347A CN107015195B CN 107015195 B CN107015195 B CN 107015195B CN 201710200347 A CN201710200347 A CN 201710200347A CN 107015195 B CN107015195 B CN 107015195B
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- base station
- timing
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- distance measuring
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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
- G01S5/02—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
- G01S5/0257—Hybrid positioning
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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
- G01S5/02—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
- G01S5/0273—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 using multipath or indirect path propagation signals in position determination
Abstract
The invention discloses a kind of method, apparatus for measuring base distance between sites, equipment and based on the positioning system of the distance measuring method.The method includes triggering the first timing module using synchronization signal to start timing and triggering transmitting ranging signals module transmitting distance measuring signal；The second timing module, which is triggered, using synchronization signal starts timing；The first timing module is triggered using distance measuring signal and the second timing module stops timing；And stops the time interval of timing, the second timing module using the first timing module and obtain distance first base station and the second base station to by the time interval of distance measuring signal triggering stopping timing since being synchronized signal triggering and start timing to being triggered by distance measuring signal since being synchronized signal triggering and start timing.The invention also discloses the methods for establishing coordinate system using base distance between sites in positioning system.Disclosed technical solution according to the present invention can save the manpower and material resources cost of measurement, improve positioning accuracy.
Description
Technical field
This disclosure relates to wirelessly communicate, more specifically, this disclosure relates to ranging and positioning field.
Background technique
Short distance, high precision wireless indoor positioning technologies are widely used in urban compact region and indoor enclosure space
It is general.Indoor locating system usually requires to lay base station in area to be targeted, to position the target position in area to be targeted.It is existing
Common location algorithm has arrival time TOA is positioned and reaching time-difference TDOA is positioned etc., above-mentioned algorithm in indoor positioning technologies
During solving target position, require using coordinate position of the base station based on some preferred coordinates system, to resolve mesh
Mark the position relative to the preferred coordinates system.This just needs positioning system before being positioned, and pre-establishes coordinate system, and survey
Measure the coordinate of each base station in the coordinate system.
The existing method established coordinate system and measure base station location is mostly used to be surveyed by total station, laser range finder etc.
The mode of measuring appratus progress manual measurement.The human cost that the mode of manual measurement expends is huge, and is limited to the laying of base station
Environment, further, since the measurement error of instrument, human error etc. influence, the precision of such method measurement base station location is poor.Base
The accuracy of station location can seriously affect accuracy when positioning to target.Therefore, the side of manual measurement base station location
Method is unable to satisfy the indoor locating system of high-precision, high accuracy.Therefore, low human cost is studied, the foundation of high accuracy is sat
The problem of method of mark system and measurement base station location becomes this field researcher's urgent need to resolve.
Summary of the invention
The invention discloses it is a kind of measurement first base station position and the second base station position between distance method,
Wherein, first base station includes the first timing module and transmitting ranging signals module, and the second base station includes the second timing module.The party
Method includes: to trigger the first timing module using synchronization signal to start timing and triggering transmitting ranging signals module transmitting ranging letter
Number, wherein transmitting ranging signals module has the response time of transmitting distance measuring signal；The second timing mould is triggered using synchronization signal
BOB(beginning of block) timing；The first timing module is triggered using distance measuring signal and the second timing module stops timing；And utilize the first meter
When module start timing to by the distance measuring signal triggering stopping time interval of timing, the second timing module since being synchronized signal triggering
Timing obtains first base station institute in place to the time interval for stopping timing being triggered by distance measuring signal since being synchronized signal triggering
Set the distance between the second base station position.
The invention has the advantages that stopping timing using distance measuring signal triggering timing module, transmitting ranging signals are obtained
Module emits the response time of distance measuring signal, and is used to resolve the distance between the position of two base stations for this response time, can
To obtain the distance measurement result of high-precision, high accuracy.
Detailed description of the invention
The distance that Fig. 1 provides a kind of embodiment according to the present invention obtains the schematic diagram of equipment 100；
Fig. 2 provides a kind of schematic diagram of the range unit 200 of embodiment according to the present invention；
Fig. 3 provides a kind of 300 schematic diagram of internal structure of base station BS 1 in embodiment illustrated in fig. 2；
Fig. 4 provides 400 schematic diagram of another internal structure of base station BS 1 in embodiment illustrated in fig. 2；
Fig. 5 provides the flow chart of distance measuring method 500 between a kind of base station of embodiment according to the present invention；
Fig. 6 provides the working sequence schematic diagram of distance measuring method 500 shown in Fig. 5；
Fig. 7 provides a kind of schematic diagram of the positioning system 700 of embodiment according to the present invention；
Fig. 8 provides a kind of schematic diagram of the establishment of coordinate system method 800 of embodiment according to the present invention.
Specific embodiment
Specific embodiments of the present invention are described more fully below, it should be noted that the embodiments described herein is served only for illustrating
Illustrate, is not intended to restrict the invention.In the following description, in order to provide a thorough understanding of the present invention, a large amount of spies are elaborated
Determine details.It will be apparent, however, to one skilled in the art that: this hair need not be carried out using these specific details
It is bright.In other instances, in order to avoid obscuring the present invention, well known circuit, material or method are not specifically described.
Throughout the specification, meaning is referred to " one embodiment ", " embodiment ", " example " or " example "
: a particular feature, structure, or characteristic described in conjunction with this embodiment or example is comprised at least one embodiment of the invention.
Therefore, the phrase " in one embodiment ", " in embodiment ", " example " occurred in each place of the whole instruction
Or " example " is not necessarily all referring to the same embodiment or example.Furthermore, it is possible in any suitable combination and or sub-portfolio will be specific
Feature, structure or characteristic combine in one or more embodiment or examples.In addition, those of ordinary skill in the art should manage
Solution, diagram is provided to the purpose of explanation provided herein, and diagram is not necessarily drawn to scale.It should be appreciated that working as
Claim " element " " being connected to " or when " coupled " to another element, it, which can be, is directly connected or coupled to another element or can be with
There are intermediary elements.On the contrary, cental element is not present when claiming element " being directly connected to " or " being directly coupled to " another element
Part.Identical appended drawing reference indicates identical element.Term "and/or" used herein includes that one or more correlations are listed
Any and all combinations of project.
The distance that Fig. 1 provides a kind of embodiment according to the present invention obtains the schematic diagram of equipment 100.As shown in Figure 1, the distance
Obtain equipment 100 illustratively include range unit, isochronous controller SC and message handler CP, wherein range unit include
Base station BS 1 and base station BS 2.In one embodiment, the base station BS 1 and base station BS 2 are geographically fixed.Isochronous controller
SC transmits synchronization signal SYN to base station BS 1 and BS2 respectively.Isochronous controller SC passes through Wireline in one embodiment
LIN1 connects base station BS1 and base station BS 2 with LIN2, with to 2 synchronous signal transmission SYN of base station BS 1 and base station BS.The synchronous letter
Number SYN can be two paths of signals that same signal is divided into, or the unlike signal with known time relationship.Wireline
Type can be determined according to the type of synchronization signal SYN, for example, synchronization signal SYN be optical signal, then Wireline be light
It is fine；Synchronization signal SYN is digital signal, then Wireline is cable；Synchronization signal SYN is ultra-broadband signal, then Wireline
For coaxial line or twisted pair.
Distance obtains equipment 100 can determine biography of the synchronization signal SYN in Wireline according to the length of Wireline
The defeated time, and then show that synchronization signal SYN reaches base station BS 1 and at the time of BS2.In another embodiment, synchronization signal SYN
Transmission time in Wireline can not also determine by the length of Wireline, but isochronous controller SC is to base station
After emitting synchronization signal SYN, base station at the same time, or is spaced the delay time of a systemic presupposition, to isochronous controller SC
Emit return path signal, at the time of isochronous controller SC is by the time of record transmitting synchronization signal SYN with return path signal is received,
And the delay time of systemic presupposition determines that synchronization signal SYN in the transmission time of Wireline, and then obtains synchronization signal
At the time of SYN reaches base station BS 1 and BS2.
Base station BS 1, which receives, emits distance measuring signal to base station BS 2 after synchronization signal SYN, and the distance measuring signal can be super
Broadband signal.At the time of message handler CP emits distance measuring signal using base station BS 1, at the time of base station BS 2 receives distance measuring signal
And the spread speed of distance measuring signal in space, to determine the distance between base station BS 1 and base station BS 2.Those skilled in the art
It should be understood that the distance between two base stations can be understood as the distance between the position of two base stations, and the message handler
CP is functional module, can be integrated into base station BS 1, BS2 or isochronous controller SC, can also individually set up.
Fig. 2 provides a kind of schematic diagram of the range unit 200 of embodiment according to the present invention, and range unit 200 is illustratively
Including base station BS 1 and base station BS 2.In one embodiment, the base station BS 1 and base station BS 2 are geographically fixed.Wherein,
Base station BS 1 includes transmitting ranging signals module 201, the first timing module 202, multi-port module 203 and first antenna 204；
Base station BS 2 includes the second timing module 205 and the second antenna 206.Base station BS 1 and base station BS 2 pass through in one embodiment
Wireline receives synchronization signal SYN.
The transmitting ranging signals module 201 of base station BS 1 receives synchronization signal SYN by internal connection line road L1, and same
It walks and generates distance measuring signal Si under the triggering of signal SYN；First timing module 202 of base station BS 1 is connect by internal connection line road L2
Synchronization signal SYN is received, and starts timing under the triggering of synchronization signal SYN.The ranging letter that transmitting ranging signals module 201 generates
Number Si is transmitted to multi-port module 203 by internal connection line road L3.The multi-port module 203 includes 1 port, 2 ports and 3
Port, 1 port are connected by internal connection line road L3 with transmitting ranging signals module 201, and 2 ports pass through internal connection line road
L4 is connected with first antenna 204, and 3 ports are connected by internal connection line road L5 with the first timing module 202.Multiterminal mouth mold
The distance measuring signal Si received from 1 port is divided into two-way by block 203, is transmitted to from 2 ports through internal connection line road L4 all the way
One antenna 204, is concurrently incident upon base station BS 2；It is transmitted to the first timing module 202 from 3 ports through internal connection line road L5 all the way, and
It triggers the first timing module 202 and stops timing.
Second timing module 205 of base station BS 2 receives synchronization signal SYN by internal connection line road L6, and believes synchronous
Start timing under the triggering of number SYN.The distance measuring signal Si that the second antenna 206 reception base station BS 1 of base station BS 2 emits, and via
Internal connection line road L7 is transmitted to the second timing module 205, and triggers the second timing module 205 and stop timing.
In embodiment illustrated in fig. 2 signal the transmission time on internal connection line L1 to L7 be it is known that can there are many
Implementation, for example, the parameter of internal connection line road L1 to L7 be it is known that the parameter include internal connection line road length,
Signaling rate can acquire transmission time of the signal on internal wiring using above-mentioned parameter.
To realize precision distance measurement, need accurately to know the emission time of distance measuring signal Si.In one embodiment, it surveys
It is ultra-broadband signal away from signal Si, corresponding, the transmitting ranging signals module 201 in base station BS 1 is ultra-broadband signal transmitting
Module.Ultra-broadband signal transmitting module 201 needs one from signal SYN triggering is synchronized, to distance measuring signal Si is really launched
Response time Δ T, and ultra-broadband ranging signal emission module 201 is the ultra-wide generated using analog device such as avalanche diode
Band distance measuring signal, response time Δ T for emitting distance measuring signal Si every time may be different, and therefore, range unit can not be known super
Wide band ranging signal transmitting module 201 emits the correct time of distance measuring signal Si, and cannot be by response time for measuring in advance
Accurately obtain really realizing the response time Δ T of transmitting distance measuring signal Si when ranging.The range unit 200 that the present embodiment provides
Transmitting ranging signals module 201 is triggered by synchronization signal SYN and emits distance measuring signal Si, and is triggered the first timing module 202 and opened
Beginning timing, and trigger the first timing module 202 using distance measuring signal Si all the way and stop timing.Range unit 200 utilizes the first meter
When module timing time and internal connection line road transmission time can calculate transmitting ranging signals module 201 emit ranging
The response time Δ T of signal Si so as to accurately learn that base station BS 1 emits the emission time of distance measuring signal Si, and then is used for
Resolve the distance between base station BS 1 and base station BS 2.
Fig. 3 provides a kind of 300 schematic diagram of internal structure of base station BS 1 in embodiment illustrated in fig. 2.Embodiment illustrated in fig. 3 is given
A kind of embodiment of the multi-port module 203 in embodiment illustrated in fig. 2 in base station BS 1 is gone out.As shown in figure 3, multiterminal mouth mold
Block 203 is realized by circulator 303.The circulator 303 includes 1 port, 2 ports and 3 ports, and 1 port connects distance measuring signal hair
It penetrates 301,2 port of module connection 304,3 port of first antenna and connects the first timing module 302.Transmitting ranging signals module 301 produces
Raw distance measuring signal Si, most can emit via first antenna 304 to space, and sub-fraction can be leaked to via 3 ports
First timing module 302.In general, the isolation of circulator 303 be 20~30dB, due to distance measuring signal Si transmission power compared with
Greatly, the first timing module 302 of triggering is remained to after the decaying of 20~30dB and stops timing, to realize the function of multiport.
Fig. 4 provides 400 schematic diagram of another internal structure of base station BS 1 in embodiment illustrated in fig. 2.Embodiment illustrated in fig. 4
Give a kind of embodiment of the multi-port module 203 in embodiment illustrated in fig. 2 in base station BS 1.As shown in figure 4, multiport
Module 203 is realized by RF switch 403.The RF switch 403 includes 1 port, 2 ports and 3 ports, and 1 port connects ranging
401,2 port of signal emission module connects 404,3 port of first antenna and connects the first timing module 402.When RF switch 403 closes
Close 1 and 2 port when, transmitting ranging signals module 401 generate distance measuring signal Si most can be via first antenna 404
To space, sub-fraction can leak to the first timing module 402 via 3 ports for transmitting.In general, the isolation of RF switch 403
The first timing module 402 of triggering is remained to after the decaying of 40dB and is stopped since the transmission power of distance measuring signal Si is larger for 40dB
Only timing, to realize the function of multiport.
In one embodiment, the base station BS 1 that can emit distance measuring signal can also be used for receiving the survey of other Base Transmitters
Away from signal.At this point, using the RF switch 402 in embodiment illustrated in fig. 4 as when multi-port module 202, by RF switch
402 2 ports are connected with 3 ports.
In addition, it will be appreciated by those skilled in the art that distance measuring structure 200 shown in Fig. 2 can be used in positioning system, base station
BS1 and base station BS 2 can be used for positioning.It disclosed part-structure of the base station for ranging in above embodiment, and it is not public
Dependency structure when it realizes positioning function is opened, but structure needed for realization positioning function is not emphasis place of the invention,
And therefore detailed elaboration is not made in the present invention there are many well known implementation in this field.
Fig. 5 provides the flow chart of distance measuring method 500 between a kind of base station of embodiment according to the present invention.Fig. 6 is to survey shown in Fig. 5
Working sequence schematic diagram away from method 500.It is described in detail between base station shown in fig. 5 below with reference to range unit 200 shown in Fig. 2
Following steps in distance measuring method 500:
Step 501: the transmitting ranging signals module 201 using synchronization signal SYN triggering base station BS 1 emits distance measuring signal
Si, triggering moment tr；The first timing module 202 using synchronization signal SYN triggering base station BS 1 starts timing, triggering moment
For tc1.And transmitting ranging signals module 201 has response time Δ to transmitting distance measuring signal Si from signal SYN triggering is synchronized
T。
Step 502: the second timing module 205 using synchronization signal SYN triggering base station BS 2 starts timing, triggering moment
For tc2.
Being used to trigger base station BS 1 and the synchronization signal of base station BS 2 in step 501 and step 502 can be identical signal
It can be unlike signal, only requiring has known sequential relationship when it reaches base station BS 1 and base station BS 2.The synchronization signal
It can be and generated by isochronous controller, and through Wireline transmission, using the parameter of Wireline, such as length, type
Deng obtaining the Wireline transmission time of synchronization signal, and then determine that synchronization signal reaches the timing of base station BS 1 and base station BS 2
Relationship.
It should also be understood by those skilled in the art that also needing respectively after synchronization signal reaches base station BS 1 and base station BS 2 by base
Stand internal connection line road L1, L2 of BS1, the internal connection line road L5 of base station BS 2 get to and trigger base station BS 1 ranging letter
Second timing module 205 of number transmitting module 201, the first timing module 202 of base station BS 1 and base station BS 2.The internal connection
The parameter of route is it is known that the internal connection line road transmission time of synchronization signal can be measured in advance.Base station is reached using synchronization signal
The internal connection line road transmission time of the timing and synchronization signal of BS1 and base station BS 2, available synchronization signal triggering station
Second timing module 205 of the transmitting ranging signals module 201 of BS1, the first timing module 202 of base station BS 1 and base station BS 2
Triggering moment tr, tc1 and tc2.
Step 503: using distance measuring signal Si trigger respectively base station BS 1 the first timing module 202 and base station BS 2 second
Timing module 205 stops timing.Wherein, the first timing module 202 of base station BS 1 timing since being synchronized signal SYN triggering,
It is T1 to the time interval for stopping timing being triggered by distance measuring signal Si, the second timing module 205 of base station BS 2 is from being synchronized signal
SYN triggering starts timing, is T2 to the time interval for stopping timing being triggered by distance measuring signal Si.
Wherein, the distance measuring signal Si that the transmitting ranging signals module 201 of base station BS 1 generates is transmitted through internal connection line road L3
To multi-port module 203, and it is divided into two-way through multi-port module 203, the internal connection line road L5 through base station BS 1 is transmitted to all the way
First timing module 202, module 202 stops timing when first in terms of triggering；The internal connection line road L4 through base station BS 1 is passed all the way
First antenna 204 is transported to, to be radiated to space by first antenna 204, and is received by the second antenna 206 of base station BS 2, then through base
The stand internal connection line road of BS2 is transmitted to the second timing module 205 of base station BS 2, to trigger in terms of the second timing module 205 stops
When.When distance measuring signal Si is transmitted to the line transmission of the first timing module 202 via the internal connection line road L3 and L5 of base station BS 1
Between be denoted as Trc, distance measuring signal Si is passed via the route that the internal connection line road L3 and L4 of base station BS 1 are transmitted to first antenna 204
The defeated time is denoted as Tra；Distance measuring signal Si propagates to second antenna 206 of base station BS 2 via the first antenna 204 of base station BS 1
Space propagation time is denoted as Td；Distance measuring signal Si is via the second antenna 206 of base station BS 2 through the internal connection line road of base station BS 2
The line transmission time that L7 is transmitted to the second timing module 205 is denoted as Tac.Wherein, line transmission time Trc, Tra and Tac be
It can be measured in advance according to the parameter on internal connection line road, it is as known.
Step 504: using base station BS 1 the first timing module 202 since be synchronized signal SYN triggering start timing to be tested
The second timing module 205 that the time interval T1, base station BS 2 that stop timing are triggered away from signal Si is triggered from signal SYN is synchronized
Start timing and obtains 1 position of base station BS and 2 institute of base station BS to the time interval T2 for stopping timing being triggered by distance measuring signal Si
The distance d12 between position.In one embodiment, the distance d12 is it is to be understood that the first antenna 204 of base station BS 1 arrives
Distance between second antenna 206 of base station BS 2.
Wherein, distance measuring method 500 can also include utilizing the transmitting ranging signals module of synchronization signal triggering base station BS 1
201, triggering moment tr, tc1 and tc2 of the second timing module 205 of the first timing module 202 and base station BS 2 of base station BS 1,
And line transmission time Trc, Tra and Tac carrys out distance between 2 position of the position calculation base station BS1 and base station BS
d12.The distance d12 can be indicated by formula (1).
D12=[T2- (tr-tc2)-Δ T-Tra-Tac] c (1)
Wherein, c is the speed that distance measuring signal Si is propagated in space, and Δ T is that transmitting ranging signals module 201 emits ranging
The response time of signal Si, Δ T can be indicated by formula (2).
Δ T=T1-Trc- (tr-tc1) (2)
Then distance d12 is represented by formula (3) between 2 position of 1 position of base station BS and base station BS.
D12=[T2-T1+Trc-Tra-Tac- (tc1-tc2)] c (3)
It will be appreciated by those skilled in the art that in the present embodiment, in order to accurately calculate the distance between base station, fully considering
The line transmission time that signal transmits in inside of base station connection line, in other embodiments, in order to simplify system complex
Part or complete also can be ignored when internal connection line road transmission time is much smaller than space propagation time of the signal between base station in degree
Portion's inside of base station connection line transmission time.
Fig. 7 provides a kind of schematic diagram of the positioning system 700 of embodiment according to the present invention.As shown in fig. 7, positioning system
700 illustratively include base station BS 1, base station BS 2, base station BS 3 and device MS to be positioned.In one embodiment, the base
Stand BS1, base station BS 2 and base station BS 3 can be geographically fixed, and device MS to be positioned is moveable.Positioning system 700 is also
It may include isochronous controller SC, to realize the synchronization of base station BS 1, base station BS 2, base station BS 3.In one embodiment, synchronous
Controller SC passes through Wireline LIN1, LIN2 respectively and connects base station BS1, base station BS 2 and base station BS 3 with LIN3, with to base
Stand 3 synchronous signal transmission SYN of BS1, base station BS 2 and base station BS.
Positioning system 700 includes two modes, i.e. distance measurement mode and station-keeping mode at work.When 700 work of positioning system
Make in distance measurement mode, by mutually receiving and dispatching distance measuring signal Si between base station, to obtain the range information between any two base station.
The distance measuring signal Si is that the functional of distance measuring signal is referred to as, and can represent the different distance measuring signals received and dispatched between different base station.Its
In, the ranging between every two base station can be realized using Fig. 1 to any embodiment shown in fig. 6.Those skilled in the art should manage
Solution, positioning system 700 shown in Fig. 7 may include and quote the content of Fig. 1 to embodiment illustrated in fig. 6, of the invention without violating
Spirit.In the embodiment shown in fig. 7, positioning system 700 includes three base stations, in order to realize ranging function between every two base station
Can, then each base station in positioning system 700 includes antenna and timing module, and positioning system 700 includes at least two
Base station with transmitting ranging signals module and multi-port module.
When positioning system 700 is in station-keeping mode, device MS to be positioned and base station BS 1, base station BS 2 and base station BS 3 it
Between propagate positioning signal Sp, the distance measuring signal Sp is that the functional of positioning signal is referred to as, wherein may include a positioning signal
Or multiple identical or different positioning signals.In one embodiment, positioning signal Sp is emitted by device MS to be positioned to each base
It stands, positioning system 700 is believed by the position that the temporal information that positioning signal Sp reaches each locating base station resolves device MS to be positioned
Breath.Wherein, location algorithm can use TDOA (Time of Arrival, reaching time-difference) algorithm, this location algorithm is ability
Domain well-known technique, is not added repeats herein.
The distance measurement mode and station-keeping mode of positioning system 700 can carry out carrying out with timesharing simultaneously.Implement at one
In example, the distance measurement mode of positioning system 700 and station-keeping mode timesharing are carried out, i.e., positioning system 700 is respectively distance measurement mode and determines
Bit pattern distributes preset different time sections.In one embodiment, positioning system 700 first works in distance measurement mode, then works
It is used to resolve in the location information of device MS to be positioned in station-keeping mode, and by the distance between each base station measured.At this point, ranging
Signal Si and positioning signal Sp is provided to each base station in section in different times, thus each base station can be belonged to by the locating period
In distance measurement mode or station-keeping mode be that distance measuring signal Si or positioning signal Sp are distinguish to the signal received.At this point
When working condition under, distance measuring signal Si and positioning signal Sp can be identical signal form, without adding to signal itself
Distinguish information.In one embodiment, distance measuring signal Si and positioning signal Sp is the ultra-broadband signal of similar frequency bands.In timesharing work
In the positioning system 700 of work, device MS either to be positioned emits positioning signal Sp, and base station receives positioning signal Sp；Or base
Stand transmitting positioning signal Sp, and device MS to be positioned receives positioning signal Sp, will not influence positioning system 700 to positioning signal Sp
With the differentiation of distance measuring signal Si.
In one embodiment, the distance measurement mode and station-keeping mode of positioning system 700 carry out simultaneously, at this point it is possible to fixed
Signal Sp and distance measuring signal Si signal itself increase diacritic information for position.In one embodiment, positioning system 700 is positioning
Signal Sp and distance measuring signal Si distribute different frequency ranges, for example, positioning signal Sp is the ultra-broadband signal of 3G-6G, distance measuring signal
Si is the ultra-broadband signal of 7G-10G, in another example, positioning signal Sp is the ultra-broadband signal of 7G-10G, and distance measuring signal Si is 3G-
The ultra-broadband signal of 6G.At this time, it may be necessary to configure corresponding transmitting path and/or receiving path for base station and device MS to be positioned.
In another embodiment, positioning system 700 adds identity letter by way of modulation for positioning signal Sp and distance measuring signal Si
Breath, the modulation system can be pulse position modulation.At this time, it may be necessary to for base station and the corresponding modulation of device MS to be positioned configuration
Circuit and/or demodulator circuit.
It in one embodiment, can be using repeatedly receiving and dispatching ranging between every two base station in order to improve the accuracy of ranging
Signal, so that the mode of the average distance measuring signal flight time repeatedly measured is realized.For example, can allow in positioning system 700
Each base station have the function of receiving and dispatching distance measuring signal, base station BS 1 first emits distance measuring signal to base station BS 2 and base station BS 3；So
Afterwards, base station BS 2 emits distance measuring signal to base station BS 1 and base station BS 3；Subsequently, base station BS 3 is sent out to base station BS 1 and base station BS 2 again
Penetrate distance measuring signal.In the manner described above, the transmission of distance measuring signal twice has all been carried out between every two base station, and then by being averaged
Mode, improve range accuracy.
Fig. 8 provides a kind of schematic diagram of the establishment of coordinate system method 800 of embodiment according to the present invention.Embodiment illustrated in fig. 8
Establishment of coordinate system method 800 can be used in positioning system 700 shown in Fig. 7.Embodiment illustrated in fig. 8 illustratively includes base station
BS1, base station BS 2, base station BS 3 and device MS to be positioned, the base station BS 1, base station BS 2, base station BS 3 are geographically fixed
, device MS to be positioned is moveable.Above-mentioned base station and device MS to be positioned constitute positioning system, and the positioning system is also
It may include isochronous controller, to synchronize each base station.Positioning system between after distance measurement mode, measuring every two base station away from
From, base station BS 1 between BS2 at a distance from indicated with a, base station BS 1 between BS3 at a distance from indicated with b, between base station BS 2 and BS3 away from
It is indicated from c.At this time base station BS 1, base station BS 2, the position of base station BS 3 relative to each other be it is found that therefore, can be with a certain
Reference point relevant to base station location is coordinate origin o, establishes coordinate system xoy, and base station BS 1, base station BS 2, base station BS 3 are being sat
Relative position in mark system is known.Embodiment illustrated in fig. 8 is illustratively with base station BS 1 for coordinate origin o, with base station BS 1
Line direction with base station BS 3 has obtained coordinate system xoy as x-axis.At this point, coordinate of the base station BS 1 in coordinate system xoy is
(0,0), coordinate of the base station BS 3 in coordinate system xoy are (b, 0), and coordinate of the base station BS 2 in coordinate system xoy is
Positioning system needs to exist using base station BS 1, base station BS 2, base station BS 3 when treating positioning device MS and being positioned
Coordinate in coordinate system xoy, to obtain coordinate of the device MS to be positioned in coordinate system xoy.When positioning system is positioned at a certain
When in specific environment, such as positioning system is in indoor environment, if being intended to a certain specified reference point in indoor environment as seat
Origin o' is marked, coordinate system x'o'y' is established, and determines coordinate of the device MS to be positioned in coordinate system x'o'y', then needs to sit
Mark system xoy, is mapped in coordinate system x'o'y'.
The present embodiment illustratively provides a kind of coordinate system mapping method, and the positioning system in embodiment illustrated in fig. 8 is in
Indoor environment, the oblique line portion in Fig. 8 is the section of indoor wall, and the indoor wall is orthogonal straight wall.
It, can be during laying base station for the ease of coordinate system xoy to be mapped in coordinate system x'o'y', basis is set in reference chamber
It applies.In the embodiment shown in fig. 8, base station BS 1 and base station BS 3 are laid on indoor wall, then the x-axis in coordinate system xoy with
X' axis in coordinate system x'o'y' is parallel, and the y-axis in coordinate system xoy is parallel with the y' axis in coordinate system x'o'y'.If ignoring
The influence of base station shape itself can be overlapped with two coordinate systems of Approximate Equivalent, if base station shape itself cannot be ignored, be needed in advance
The geomery of base station is measured, and is applied in the mapping of coordinate system.
It will be appreciated by those skilled in the art that in coordinate system mapping process, it is not limited to wall as reference, it can be with
Which kind of calibration object using in environment any one fixed physics selects as reference, by wanting dress to be positioned nominally as reference
It sets MS and is mapped in which reference frame and determine.
It will be appreciated by those skilled in the art that is established in the embodiment shown in fig. 8 is planar two dimensional coordinate system, then it is assumed that
Three base stations are in identical level height.In other embodiments, it if 3 d space coordinate system to be established, needs to introduce another
One base station, and measure the base station between base station BS 1, base station BS 2 and base station BS 3 at a distance from, to be sat in space three-dimensional
In mark system, the position of each base station relative to each other is uniquely determined.
Base distance between sites are measured using transmitting-receiving distance measuring signal between base station using described, and establish coordinate using base distance between sites
The method of system solves in the prior art by the way of carrying out manual measurement by measuring instruments such as total station, laser range finders
The laying environment and measurement error, human error due to instrument that when establishing coordinate system, human cost is huge, is limited to base station
Deng influencing, caused by the poor problem of precision.
As the above mentioned, although having illustrated and described the preferred embodiment of the present invention, without departing substantially from this hair
In the case where bright spirit and scope, many changes can be carried out.The scope of the present invention is not by the open institute of preferred embodiment as a result,
Limitation.But the present invention should be determined entirely by reference to following claims.
Claims (6)
1. a kind of method of distance between measurement first base station position and the second base station position, wherein first base station
Including the first timing module and transmitting ranging signals module, the second base station includes the second timing module, which comprises
The first timing module, which is triggered, using synchronization signal starts timing and triggering transmitting ranging signals module transmitting distance measuring signal,
In, transmitting ranging signals module has the response time of transmitting distance measuring signal；
The second timing module, which is triggered, using synchronization signal starts timing；
The first timing module is triggered using distance measuring signal and the second timing module stops timing；And
Using the first timing module since be synchronized signal triggering start timing to by distance measuring signal triggering stopping timing time
It is obtained to by the time interval of distance measuring signal triggering stopping timing every, the second timing module since being synchronized signal triggering and start timing
Distance between first base station position and the second base station position；
Wherein, obtain between first base station position and the second base station position apart from the step of include: to utilize the first meter
When module since be synchronized signal triggering start timing to by distance measuring signal triggering stopping timing time interval to obtain response when
Between；
Using the second timing module since be synchronized signal triggering start timing to by distance measuring signal triggering stopping timing time
Every the time for subtracting the response time and being propagated to obtain distance measuring signal between first base station position and the second base station position；
And
Time for being propagated between first base station position and the second base station position using distance measuring signal and speed are obtained
Distance between first base station position and the second base station position；
Wherein, obtain the response time the step of including the use of the first timing module since be synchronized signal triggering start timing to be tested
The time interval for triggering stopping timing away from signal subtracts distance measuring signal from transmitting ranging signals module transfer to the first timing module
The line transmission time and subtract synchronization signal triggering transmitting ranging signals module transmitting distance measuring signal and synchronization signal triggering the
One timing module starts difference at the time of timing.
2. the method for claim 1, wherein first base station further includes first antenna, the second base station further includes second day
Line, obtain distance measuring signal propagated between first base station position and the second base station position time the step of including the use of
Second timing module since be synchronized signal triggering start timing to by distance measuring signal triggering stopping timing time interval subtract sound
Line transmission time of the distance measuring signal from transmitting ranging signals module transfer to first antenna is subtracted between seasonable again and from second
Antenna transmission to the second timing module the line transmission time, then subtract synchronization signal triggering transmitting ranging signals module transmitting survey
Difference at the time of the second timing module starts timing is triggered away from signal and synchronization signal.
3. the method for claim 1, wherein first base station further includes first antenna, the second base station further includes second day
Line, when the method also includes using distance measuring signal from transmitting ranging signals module transfer to the line transmission of the first timing module
Between, line transmission time of the distance measuring signal from transmitting ranging signals module transfer to first antenna and from the second antenna transmission to
The line transmission time of second timing module obtains the distance between first base station position and the second base station position.
4. the method for claim 1, wherein the first timing module of synchronization signal triggering starts timing and synchronization signal touching
It is known for sending out the second timing module to start the time interval of timing.
5. the method for claim 1, wherein first base station further includes first antenna, the method also includes by ranging
The distance measuring signal of signal emission module transmitting is divided into two-way, stops timing for triggering the first timing module all the way, and another way is logical
First antenna transmitting is crossed to stop timing for triggering the second timing module.
6. the method for claim 1, wherein distance measuring signal is UWB signal.
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| CN114339993B (en) * | 2022-03-16 | 2022-06-28 | 北京瑞迪时空信息技术有限公司 | Ground-based positioning method, device, equipment and medium based on antenna distance constraint |
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| US6453168B1 (en) * | 1999-08-02 | 2002-09-17 | Itt Manufacturing Enterprises, Inc | Method and apparatus for determining the position of a mobile communication device using low accuracy clocks |
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| CN1620827A (en) * | 2001-12-12 | 2005-05-25 | 诺基亚有限公司 | Method, apparatus and system for synchronizing a cellular communication system to GPS time |
| CN1969197A (en) * | 2004-02-17 | 2007-05-23 | 加迪公司 | Ultra wide band navigation system with mobile base stations |
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