CN107202974A - A kind of position indicator and its localization method - Google Patents
A kind of position indicator and its localization method Download PDFInfo
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- CN107202974A CN107202974A CN201710485316.8A CN201710485316A CN107202974A CN 107202974 A CN107202974 A CN 107202974A CN 201710485316 A CN201710485316 A CN 201710485316A CN 107202974 A CN107202974 A CN 107202974A
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- location instrument
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- 238000000034 method Methods 0.000 title claims description 18
- 230000004807 localization Effects 0.000 title claims description 16
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005304 joining Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
-
- 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
- G01S5/12—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 by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
A kind of position indicator, including control unit, RF switch and antenna, the RF switch includes control end RF switch and antenna end RF switch, described control unit connects the control end RF switch, the control end RF switch connects the input of power amplifier, the output end of the power amplifier connects the antenna end RF switch, and the antenna end RF switch connects the antenna, and described control unit and the power amplifier are all connected to power supply.Power amplifier can lift position indicator transmission power, so as to increase communication distance, substantially, signal transmitting range can be farther, and application expands significantly for effect.
Description
Technical field
The invention belongs to position location field, especially a kind of position indicator and its localization method.
Background technology
Ranging technology is mankind Ji Foundation measuring technology.From daily life, commercial measurement, geodesic survey, navigation, boat
Sky, space flight, interplanetary probe, meteorological detection are ubiquitous to military struggle, always use.Existing rangefinder, by working signal
Physical property point, there is ultrasonic range finder, laser range finder, electromagnetic distance measuring instrument etc..Radar is exactly a kind of a wide range of electricity of purposes
Magnetic wave (or laser, or ultrasonic wave) rangefinder.The common drawback of existing various distance-finding methods is that measurement accuracy is not high, and with
Working signal frequency dependence, poor anti jamming capability, electromagnetic radiation is apart from short, and limitation is big, it is impossible to apply to large-scale place, than
Such as sportsman's positioning on football pitch.
The content of the invention
The invention aims to which the electromagnetic radiation distance for solving position location instrument in the prior art is shorter, limit to
Property it is big the problem of, realize it is a kind of can make signal transmitting range expand several times more than position indicator.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of position indicator, including
Control unit, RF switch and antenna, the RF switch include control end RF switch and antenna end RF switch, the control
Unit processed connects the control end RF switch, and the control end RF switch connects the input of power amplifier, the work(
The output end of rate amplifier connects the antenna end RF switch, and the antenna end RF switch connects the antenna, the control
Unit processed and the power amplifier are all connected to power supply.Power amplifier can lift position indicator transmission power, so as to increase
Communication distance, substantially, signal transmitting range can be farther, and application expands significantly for effect.
Preferably, being connected with reception signal amplification between the control end RF switch and the antenna end RF switch
Device, the antenna end RF switch connects the input of the receiving signal amplifier, and the control end RF switch connects institute
The output end of receiving signal amplifier is stated, the receiving signal amplifier connects the power supply.Position indicator orientation distance expands it
Afterwards, in order to ensure receive signal accuracy, receive loop on increase a receiving signal amplifier, be exaggerated reception signal
Intensity, reduce error.
Preferably, the output end of the power supply connects boost module and voltage reduction module respectively, the power amplifier connects
The boost module is connect, the boost module connects described control unit, and the receiving signal amplifier connects the decompression mould
Block, the voltage reduction module connects described control unit.Because power amplifier needs to use 5V power work, and control unit
Power supply be 3.3V, therefore, power supply output end set boost module so that boost module connect power amplifier；And connect
Receiving signal amplifier then needs than 3.3V also low voltages, and therefore, power supply receives signal in connection by a voltage reduction module and put
Big device, realizes that need to only provide a power supply can provide the power supply of different voltages to each module.
Buffer module provided with a raising chip drives ability between the boost module and described control unit, it is described
Buffer module connects the control end RF switch and the antenna end RF switch, and the buffer module connects the power and put
Big device.Buffer module input signal is control unit signal, and output signal control RF switch switching, buffer module can be improved
The driving force of control unit, prevents the too low situation about can not drive of impedance.
The localization method of the position indicator, at grade, the localization method are divided into the following steps：
A, two position indicators are respectively arranged on origin and destination, it is assumed that starting point position indicator is A point location instrument, and settled point location instrument is B points
Position indicator；
B, A point location instrument send a signal to B points and start timing；
C, B point location instrument receive signal and start timing and return path signal；
The signal timing that D, A point location instrument receive the passback of B point locations instrument terminates, and △ t is designated as, while A point location instrument is sent out again
The number of delivering letters gives B point location instrument；
E, B point location instrument receive signal again, terminate during B point location instrument meters, are designated as △ t '；
F, A point location instrument and B point locations instrument calculate distance respectively according to respective time difference △ t and △ t ', realize A point locations
Ranging between instrument and B point location instrument.
At grade, at least known two points, the 3rd point surveyed in the plane, it is assumed that two known points are A points
Position indicator and B point location instrument, tested point are C point location instrument, are divided into the following steps：
A, A point location instrument and C point location instrument are mutually located；
B, B point location instrument and C point location instrument are mutually located；
C, control unit determine C according to the distance of A point locations instrument to C point location instrument, B point locations instrument to the distance of C point location instrument
Two positions of point location instrument on this plane.
Tested point C to AB points distance is a, b, using A, B as the center of circle, and a, b are that radius draws circle, and two circle joinings are exactly that C points are sat
Mark.（Except tangent, otherwise two circles are intersecting has two intersection points）.
In practical application scene, such as court.Known point can be set at court edge, then tested point is i.e. in court
Two possible positions that are interior, it may be determined that the direction of tested point, being measured by two known points to tested point, it is possible to it is determined that real
Border position.
At grade, it is known that three points, the 4th point surveyed in the plane, it is assumed that three known points be A point locations instrument,
B point locations instrument and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that the coordinate of D point locations instrument on this plane.
Tested point D to ABC points distance is a, b, c, using A, B, C as the center of circle, and a, b, c are that radius draws circle, three round joinings
It is exactly D point coordinates.
At grade, it is known that more than three points, the tested point surveyed in the plane, it is assumed that three known points are fixed for A points
Position instrument, B point locations instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, A point location instrument and F point location instrument are mutually located；
B, B point location instrument and F point location instrument are mutually located；
C, C point location instrument and F point location instrument are mutually located；
D, D point location instrument and F point location instrument are mutually located；
E, E point location instrument and F point location instrument are mutually located；
F, by tested point to the distance of multiple known points, tested point is positioned, calculated multiple possible in the plane
Point coordinates to be measured；
G, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate final seat of the tested point in the plane
Mark.
In Different Plane, at least three known points survey the 4th point, it is assumed that three known points are A point locations instrument, B points
Position indicator and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that two coordinates of D point locations instrument in space.
In Different Plane, at least four known points survey the 5th point, it is assumed that four known points are A point locations instrument, B points
Position indicator, C point locations instrument and D point location instrument, tested point are E point location instrument, are divided into the following steps：
A, A point location instrument and E point location instrument are mutually located；
B, B point location instrument and E point location instrument are mutually located；
C, C point location instrument and E point location instrument are mutually located；
D, D point location instrument and E point location instrument are mutually located；
E, control unit are determined according to the distance of A point locations instrument to E point location instrument, the distance of B point locations instrument to E point location instrument, C points
Position instrument is to the distance of E point location instrument, and the distance of D point locations instrument to E point location instrument determines the position of E point locations instrument in space.
In Different Plane, at least five known points survey tested point, it is assumed that five known points are A point locations instrument, B points are determined
Position instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, selection tetra- known points of ABCD, measure point coordinates to be measured；
B, the various combination by four known points, ACDE, ABDE, ABCE, BCDE carry out multiple bearing to tested point F, measure
Multiple point coordinates to be measured；
C, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate the final coordinate of tested point.
Because the coordinate value measured is the coordinate with systematic error, such as correct coordinate is（1,1,1）, actually measure
Coordinate be（1±0.1,1 ±0.1,1 ±0.3）, in order to more accurately obtain point coordinates to be measured, the present invention is by asking most
The algorithm of excellent solution eliminates error.
In theory, when tested point D to known point A, B and C distance is a, b, c, using A, B, C as the center of circle, a, b, c are radius
Circle is drawn, three round joinings are exactly D coordinates.But, in actual applications, there is error in a, b, c, cause three circles complete
Intersect entirely on same point, therefore first calculate three circles all intersection point D, D‘、D’’Deng, three points for taking coordinate nearest,
The point of other apparent errors is excluded, D, D is obtained‘、D’’。
In two dimension, according to X, Y maximum, the minimum value of three points, a rectangle is drawn, the central point of rectangle, as D is asked
Point final coordinate.
In three-dimensional, according to X, Y, Z maximum, the minimum value of three points, a cube is drawn, cubical central point is sought
As final coordinate.
Beneficial effect：The present invention realizes position indicators more than a kind of signal transmitting range expansion several times, by transmitting
Increase a power amplifier on circuit, transmission power is lifted, so as to increase communication distance；Correspondence increase receives letter on loop
Number amplifier, it is possible to increase receive the precision of signal so that position indicator positioning is more accurate.The present invention expands signal transmitting
Sportsman's positioning in distance so that have wide range of applications, such as soccer stadium, you can to position sportsman's distributing position in real time.
Brief description of the drawings
Accompanying drawing 1 is a kind of theory diagram of position indicator of the present invention.
1st, control unit；2nd, antenna；3rd, control end RF switch；4th, antenna end RF switch；5th, power amplifier；6th, it is electric
Source；7th, receiving signal amplifier；8th, boost module；9th, voltage reduction module；10th, buffer module.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment one：As shown in fig. 1, the present invention is a kind of position indicator, including control unit 1, RF switch and antenna
2, the RF switch includes control end RF switch 3 and antenna end RF switch 4, and described control unit 1 connects the control
RF switch 3 is held, the control end RF switch 3 connects the input of power amplifier 5, the output of the power amplifier 5
The end connection antenna end RF switch 4, the antenna end RF switch 4 connects the antenna 2, described control unit 1 and institute
State power amplifier 5 and be all connected to power supply 6.Power amplifier 5 can lift position indicator transmission power, thus increase communication away from
From substantially, signal transmitting range can reach hundred meters of 5-6 to effect, and application expands significantly.
The localization method of the position indicator, at grade, the localization method are divided into the following steps：
A, two position indicators are respectively arranged on origin and destination, it is assumed that starting point position indicator is A point location instrument, and settled point location instrument is B points
Position indicator；
B, A point location instrument send a signal to B points and start timing；
C, B point location instrument receive signal and start timing and return path signal；
The signal timing that D, A point location instrument receive the passback of B point locations instrument terminates, and △ t is designated as, while A point location instrument is sent out again
The number of delivering letters gives B point location instrument；
E, B point location instrument receive signal again, terminate during B point location instrument meters, are designated as △ t '；
F, A point location instrument and B point locations instrument calculate distance respectively according to respective time difference △ t and △ t ', realize A point locations
Ranging between instrument and B point location instrument.
At grade, at least known two points, the 3rd point surveyed in the plane, it is assumed that two known points are A points
Position indicator and B point location instrument, tested point are C point location instrument, are divided into the following steps：
A, A point location instrument and C point location instrument are mutually located；
B, B point location instrument and C point location instrument are mutually located；
C, control unit determine C according to the distance of A point locations instrument to C point location instrument, B point locations instrument to the distance of C point location instrument
Two positions of point location instrument on this plane.
Tested point C to AB points distance is a, b, using A, B as the center of circle, and a, b are that radius draws circle, and two circle joinings are exactly that C points are sat
Mark.（Except tangent, otherwise two circles are intersecting has two intersection points）.
In practical application scene, such as court.Known point can be set at court edge, then tested point is i.e. in court
Two possible positions that are interior, it may be determined that the direction of tested point, being measured by two known points to tested point, it is possible to it is determined that real
Border position.
At grade, it is known that three points, the 4th point surveyed in the plane, it is assumed that three known points be A point locations instrument,
B point locations instrument and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that the coordinate of D point locations instrument on this plane.
Tested point D to ABC points distance is a, b, c, using A, B, C as the center of circle, and a, b, c are that radius draws circle, three round joinings
It is exactly D point coordinates.
At grade, it is known that more than three points, the tested point surveyed in the plane, it is assumed that three known points are fixed for A points
Position instrument, B point locations instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, A point location instrument and F point location instrument are mutually located；
B, B point location instrument and F point location instrument are mutually located；
C, C point location instrument and F point location instrument are mutually located；
D, D point location instrument and F point location instrument are mutually located；
E, E point location instrument and F point location instrument are mutually located；
F, by tested point to the distance of multiple known points, tested point is positioned, calculated multiple possible in the plane
Point coordinates to be measured；
G, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate final seat of the tested point in the plane
Mark.
In Different Plane, at least three known points survey the 4th point, it is assumed that three known points are A point locations instrument, B points
Position indicator and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that two coordinates of D point locations instrument in space.
In Different Plane, at least four known points survey the 5th point, it is assumed that four known points are A point locations instrument, B points
Position indicator, C point locations instrument and D point location instrument, tested point are E point location instrument, are divided into the following steps：
A, A point location instrument and E point location instrument are mutually located；
B, B point location instrument and E point location instrument are mutually located；
C, C point location instrument and E point location instrument are mutually located；
D, D point location instrument and E point location instrument are mutually located；
E, control unit are determined according to the distance of A point locations instrument to E point location instrument, the distance of B point locations instrument to E point location instrument, C points
Position instrument is to the distance of E point location instrument, and the distance of D point locations instrument to E point location instrument determines the position of E point locations instrument in space.
In Different Plane, at least five known points survey tested point, it is assumed that five known points are A point locations instrument, B points are determined
Position instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, selection tetra- known points of ABCD, measure point coordinates to be measured；
B, the various combination by four known points, ACDE, ABDE, ABCE, BCDE carry out multiple bearing to tested point F, measure
Multiple point coordinates to be measured；
C, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate the final coordinate of tested point.
Because the coordinate value measured is the coordinate with systematic error, such as correct coordinate is（1,1,1）, actually measure
Coordinate be（1±0.1,1 ±0.1,1 ±0.3）, in order to more accurately obtain point coordinates to be measured, the present invention is by asking most
The algorithm of excellent solution eliminates error.
In theory, when tested point D to known point A, B and C distance is a, b, c, using A, B, C as the center of circle, a, b, c are radius
Circle is drawn, three round joinings are exactly D coordinates.But, in actual applications, there is error in a, b, c, cause three circles complete
Intersect entirely on same point, therefore first calculate three circles all intersection point D, D‘、D’’Deng, three points for taking coordinate nearest,
The point of other apparent errors is excluded, D, D is obtained‘、D’’。
In two dimension, according to X, Y maximum, the minimum value of three points, a rectangle is drawn, the central point of rectangle, as D is asked
Point final coordinate.
In three-dimensional, according to X, Y, Z maximum, the minimum value of three points, a cube is drawn, cubical central point is sought
As final coordinate.
Beneficial effect：The present invention realizes position indicators more than a kind of signal transmitting range expansion several times, by transmitting
Increase a power amplifier 5 on circuit, transmission power is lifted, so as to increase communication distance；Correspondence increase is received on loop
Signal amplifier 7, it is possible to increase receive the precision of signal so that position indicator positioning is more accurate.The present invention expands signal
Sportsman's positioning in transmitting range so that have wide range of applications, such as soccer stadium, you can to position sportsman's distribution position in real time
Put.
Embodiment two：As shown in fig. 1, the present invention is a kind of position indicator, includes control unit 1, RF switch and day
Line 2, the RF switch includes control end RF switch 3 and antenna end RF switch 4, and described control unit 1 connects the control
End RF switch 3 processed, the control end RF switch 3 connects the input of power amplifier 5, the power amplifier 5 it is defeated
Go out the end connection antenna end RF switch 4, the antenna end RF switch 4 connects the antenna 2, the He of described control unit 1
The power amplifier 5 is all connected to power supply 6.Power amplifier 5 can lift position indicator transmission power, thus increase communication away from
From substantially, signal transmitting range can reach hundred meters of 5-6 to effect, and application expands significantly.
Receiving signal amplifier 7, institute are connected between the control end RF switch 3 and the antenna end RF switch 4
The input that antenna end RF switch 4 connects the receiving signal amplifier 7 is stated, the control end RF switch 3 connects described
The output end of receiving signal amplifier 7, the receiving signal amplifier 7 connects the power supply 6.Position indicator orientation distance expands it
Afterwards, in order to ensure receive signal accuracy, receive loop on increase a receiving signal amplifier 7, be exaggerated reception letter
Number intensity, reduce error.
The output end of the power supply 6 connects boost module 8 and voltage reduction module 9 respectively, and the power amplifier 5 connects described
Boost module 8, the boost module 8 connects described control unit 1, and the receiving signal amplifier 7 connects the voltage reduction module
9, the voltage reduction module 9 connects described control unit 1.Because power amplifier 5 needs to use 5V power work, and controls single
The power supply of member 1 is 3.3V, therefore, sets boost module 8 in the output end of power supply 6 so that boost module 8 connects power amplifier
5；And receiving signal amplifier 7 is then needed than 3.3V also low voltages, therefore, power supply 6 is connect by a voltage reduction module 9 in connection
Signal amplifier 7 is received, realizes that need to only provide a power supply 6 can provide the power supply of different voltages to each module.
Buffer module 10 provided with a raising chip drives ability between the boost module 8 and described control unit 1,
The buffer module 10 connects the control end RF switch 3 and the antenna end RF switch 4, and the buffer module 10 is connected
The power amplifier 5.The input signal of buffer module 10 is that control unit believes No. 1, and output signal control RF switch switching is delayed
Die block 10 can improve the driving force of control unit 1, prevent the too low situation about can not drive of impedance.
The localization method of the position indicator, at grade, the localization method are divided into the following steps：
A, two position indicators are respectively arranged on origin and destination, it is assumed that starting point position indicator is A point location instrument, and settled point location instrument is B points
Position indicator；
B, A point location instrument send a signal to B points and start timing；
C, B point location instrument receive signal and start timing and return path signal；
The signal timing that D, A point location instrument receive the passback of B point locations instrument terminates, and △ t is designated as, while A point location instrument is sent out again
The number of delivering letters gives B point location instrument；
E, B point location instrument receive signal again, terminate during B point location instrument meters, are designated as △ t '；
F, A point location instrument and B point locations instrument calculate distance respectively according to respective time difference △ t and △ t ', realize A point locations
Ranging between instrument and B point location instrument.
At grade, at least known two points, the 3rd point surveyed in the plane, it is assumed that two known points are A points
Position indicator and B point location instrument, tested point are C point location instrument, are divided into the following steps：
A, A point location instrument and C point location instrument are mutually located；
B, B point location instrument and C point location instrument are mutually located；
C, control unit determine C according to the distance of A point locations instrument to C point location instrument, B point locations instrument to the distance of C point location instrument
Two positions of point location instrument on this plane.
Tested point C to AB points distance is a, b, using A, B as the center of circle, and a, b are that radius draws circle, and two circle joinings are exactly that C points are sat
Mark.（Except tangent, otherwise two circles are intersecting has two intersection points）.
In practical application scene, such as court.Known point can be set at court edge, then tested point is i.e. in court
Two possible positions that are interior, it may be determined that the direction of tested point, being measured by two known points to tested point, it is possible to it is determined that real
Border position.
At grade, it is known that three points, the 4th point surveyed in the plane, it is assumed that three known points be A point locations instrument,
B point locations instrument and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that the coordinate of D point locations instrument on this plane.
Tested point D to ABC points distance is a, b, c, using A, B, C as the center of circle, and a, b, c are that radius draws circle, three round joinings
It is exactly D point coordinates.
At grade, it is known that more than three points, the tested point surveyed in the plane, it is assumed that three known points are fixed for A points
Position instrument, B point locations instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, A point location instrument and F point location instrument are mutually located；
B, B point location instrument and F point location instrument are mutually located；
C, C point location instrument and F point location instrument are mutually located；
D, D point location instrument and F point location instrument are mutually located；
E, E point location instrument and F point location instrument are mutually located；
F, by tested point to the distance of multiple known points, tested point is positioned, calculated multiple possible in the plane
Point coordinates to be measured；
G, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate final seat of the tested point in the plane
Mark.
In Different Plane, at least three known points survey the 4th point, it is assumed that three known points are A point locations instrument, B points
Position indicator and C point location instrument, tested point are D point location instrument, are divided into the following steps：
A, A point location instrument and D point location instrument are mutually located；
B, B point location instrument and D point location instrument are mutually located；
C, C point location instrument and D point location instrument are mutually located；
D, control unit are determined according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C points
Position instrument to D point location instrument distance, it may be determined that two coordinates of D point locations instrument in space.
In Different Plane, at least four known points survey the 5th point, it is assumed that four known points are A point locations instrument, B points
Position indicator, C point locations instrument and D point location instrument, tested point are E point location instrument, are divided into the following steps：
A, A point location instrument and E point location instrument are mutually located；
B, B point location instrument and E point location instrument are mutually located；
C, C point location instrument and E point location instrument are mutually located；
D, D point location instrument and E point location instrument are mutually located；
E, control unit are determined according to the distance of A point locations instrument to E point location instrument, the distance of B point locations instrument to E point location instrument, C points
Position instrument is to the distance of E point location instrument, and the distance of D point locations instrument to E point location instrument determines the position of E point locations instrument in space.
In Different Plane, at least five known points survey tested point, it is assumed that five known points are A point locations instrument, B points are determined
Position instrument, C point locations instrument, D point locations instrument and E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, selection tetra- known points of ABCD, measure point coordinates to be measured；
B, the various combination by four known points, ACDE, ABDE, ABCE, BCDE carry out multiple bearing to tested point F, measure
Multiple point coordinates to be measured；
C, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate the final coordinate of tested point.
Because the coordinate value measured is the coordinate with systematic error, such as correct coordinate is（1,1,1）, actually measure
Coordinate be（1±0.1,1 ±0.1,1 ±0.3）, in order to more accurately obtain point coordinates to be measured, the present invention is by asking most
The algorithm of excellent solution eliminates error.
In theory, when tested point D to known point A, B and C distance is a, b, c, using A, B, C as the center of circle, a, b, c are radius
Circle is drawn, three round joinings are exactly D coordinates.But, in actual applications, there is error in a, b, c, cause three circles complete
Intersect entirely on same point, therefore first calculate three circles all intersection point D, D‘、D’’Deng, three points for taking coordinate nearest,
The point of other apparent errors is excluded, D, D is obtained‘、D’’。
In two dimension, according to X, Y maximum, the minimum value of three points, a rectangle is drawn, the central point of rectangle, as D is asked
Point final coordinate.
In three-dimensional, according to X, Y, Z maximum, the minimum value of three points, a cube is drawn, cubical central point is sought
As final coordinate.
Beneficial effect：The present invention realizes position indicators more than a kind of signal transmitting range expansion several times, by transmitting
Increase a power amplifier 5 on circuit, transmission power is lifted, so as to increase communication distance；Correspondence increase is received on loop
Signal amplifier 7, it is possible to increase receive the precision of signal so that position indicator positioning is more accurate.The present invention expands signal
Sportsman's positioning in transmitting range so that have wide range of applications, such as soccer stadium, you can to position sportsman's distribution position in real time
Put.
Claims (11)
1. a kind of position indicator, including control unit, RF switch and antenna, it is characterised in that：The RF switch includes control
RF switch and antenna end RF switch are held, described control unit connects the control end RF switch, the control end radio frequency
The input of switch connection power amplifier, the output end of the power amplifier connects the antenna end RF switch, described
Antenna end RF switch connects the antenna, and described control unit and the power amplifier are all connected to power supply.
2. a kind of position indicator according to claim 1, it is characterised in that：The control end RF switch and the antenna end
Receiving signal amplifier is connected between RF switch, the antenna end RF switch connects the defeated of the receiving signal amplifier
Enter end, the control end RF switch connects the output end of the receiving signal amplifier, the receiving signal amplifier connection
The power supply.
3. a kind of position indicator according to claim 1, it is characterised in that：The output end of the power supply connects boosting mould respectively
Block and voltage reduction module, the power amplifier connect the boost module, and the boost module connects described control unit, described
Receiving signal amplifier connects the voltage reduction module, and the voltage reduction module connects described control unit.
4. a kind of position indicator according to claim 1 or 3, it is characterised in that：The boost module and described control unit
Between the buffer module provided with a raising chip drives ability, the buffer module connects the control end RF switch and institute
Antenna end RF switch is stated, the buffer module connects the power amplifier.
5. using a kind of localization method of position indicator described in claim 1, it is characterised in that：At grade, determine for two
The method that position instrument is mutually located is divided into the following steps：
A, two position indicators are respectively arranged on origin and destination, it is assumed that starting point position indicator is A point location instrument, and settled point location instrument is B points
Position indicator；
B, A point location instrument send a signal to B points and start timing；
C, B point location instrument receive signal and start timing and return path signal；
The signal timing that D, A point location instrument receive the passback of B point locations instrument terminates, and △ t is designated as, while A point location instrument is sent out again
The number of delivering letters gives B point location instrument；
E, B point location instrument receive signal again, terminate during B point location instrument meters, are designated as △ t '；
F, A point location instrument and B point locations instrument calculate distance respectively according to respective time difference △ t and △ t ', realize A point locations
Ranging between instrument and B point location instrument.
6. a kind of localization method of position indicator according to claim 5, it is characterised in that：At grade, at least
Know two points, the 3rd surveyed in the plane point, it is assumed that two known points are A point locations instrument and B point location instrument, and tested point is C
Point location instrument, is divided into the following steps：
A, A point location instrument and C point location instrument are mutually located；
B, B point location instrument and C point location instrument are mutually located；
C, control unit determine C according to the distance of A point locations instrument to C point location instrument, B point locations instrument to the distance of C point location instrument
Two positions of point location instrument on this plane.
7. a kind of localization method of position indicator according to claim 5 or 6, it is characterised in that：At grade, it is known that
Three points, the 4th point surveyed in the plane, it is assumed that three known points are A point locations instrument, B point locations instrument and C point location instrument, to be measured
Point is D point location instrument, is divided into the following steps：
A point locations instrument is mutually located with D point location instrument；
B point locations instrument is mutually located with D point location instrument；
C point locations instrument is mutually located with D point location instrument；
Control unit is according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C point locations
Instrument to D point location instrument distance, it may be determined that the coordinate of D point locations instrument on this plane.
8. a kind of localization method of position indicator according to claim 7, it is characterised in that：At grade, it is known that super
Cross three points, the tested point surveyed in the plane, it is assumed that three known points are A point locations instrument, B point locations instrument, C point locations instrument, D points
Position indicator and E point location instrument, tested point are F point location instrument, are divided into the following steps：
A point locations instrument is mutually located with F point location instrument；
B point locations instrument is mutually located with F point location instrument；
C point locations instrument is mutually located with F point location instrument；
D point locations instrument is mutually located with F point location instrument；
E point locations instrument is mutually located with F point location instrument；
By tested point to the distance of multiple known points, tested point is positioned, multiple in the plane possible treat is calculated
Measuring point coordinate；
According to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate final seat of the tested point in the plane
Mark.
9. a kind of localization method of position indicator according to claim 5 or 6, it is characterised in that：In Different Plane, at least
Three known points, survey the 4th point, it is assumed that three known points are A point locations instrument, B point locations instrument and C point location instrument, and tested point is
D point location instrument, is divided into the following steps：
A point locations instrument is mutually located with D point location instrument；
B point locations instrument is mutually located with D point location instrument；
C point locations instrument is mutually located with D point location instrument；
Control unit is according to the distance of A point locations instrument to D point location instrument, the distance of B point locations instrument to D point location instrument, C point locations
Instrument to D point location instrument distance, it may be determined that two coordinates of D point locations instrument in space.
10. a kind of localization method of position indicator according to claim 9, it is characterised in that：In Different Plane, at least four
Individual known point, surveys the 5th point, it is assumed that four known points are A point locations instrument, B point locations instrument, C point locations instrument and D point location instrument,
Tested point is E point location instrument, is divided into the following steps：
A, A point location instrument and E point location instrument are mutually located；
B, B point location instrument and E point location instrument are mutually located；
C, C point location instrument and E point location instrument are mutually located；
D, D point location instrument and E point location instrument are mutually located；
Control unit is according to the distance of A point locations instrument to E point location instrument, the distance of B point locations instrument to E point location instrument, C point locations
Instrument to the distance of E point location instrument, the distance of D point locations instrument to E point location instrument determines the position of E point locations instrument in space.
11. a kind of localization method of position indicator according to claim 10, it is characterised in that：In Different Plane, at least
Five known points, survey tested point, it is assumed that five known points be A point locations instrument, B point locations instrument, C point locations instrument, D point locations instrument and
E point location instrument, tested point is F point location instrument, is divided into the following steps：
A, selection tetra- known points of ABCD, measure point coordinates to be measured；
B, the various combination by four known points, ACDE, ABDE, ABCE, BCDE carry out multiple bearing to tested point F, measure
Multiple point coordinates to be measured；
C, according to multiple coordinate points measured, by asking the algorithm of optimal solution to calculate the final coordinate of tested point.
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