CN109302245A - A kind of antenna alignment method and device - Google Patents
A kind of antenna alignment method and device Download PDFInfo
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- CN109302245A CN109302245A CN201811182107.7A CN201811182107A CN109302245A CN 109302245 A CN109302245 A CN 109302245A CN 201811182107 A CN201811182107 A CN 201811182107A CN 109302245 A CN109302245 A CN 109302245A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Abstract
The invention discloses a kind of antenna alignment method and apparatus, method includes: base station end search ustomer premises access equipment；After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；Judge the above-mentioned deflection measured whether in optimum signal direction angle range；If antenna is without rotation in optimum orientation angular region；If calculating aerial array needs rotational angle and its direction not in optimum orientation angular region；Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, pause a moment then repeats measurement user terminal relative to the deflection where base station end, and calculates aerial array again and need rotational angle and its direction, and rotary antenna array again.
Description
Technical field
The invention belongs to this disclosure relates to antenna technical field more particularly to a kind of antenna alignment method and device.
Background technique
Antenna is the headend equipment of wireless communication, even however omnidirectional antenna, the performance in all directions be also difficult to
Realize consistency.For sending and receiving end all in stationary state in the case where, can taking human as adjustment antenna installation direction so that antenna
Optimum signal direction be aligned communication target.It is artificial to adjust but in the case where changing frequent occurrence for sending and receiving end relative position
Whole method is then no longer available.
Super-broadband tech (UWB) has many advantages, such as that small power consumption, strong antijamming capability, anti-multipath effect capability are strong, extensively
Applied to indoor positioning.It can achieve high precision under UWB location technology ideal conditions, however due in antenna all directions
The inconsistency of performance, such as inconsistency, the inconsistency of phase and time delay of gain have seriously affected the essence of UWB positioning
Degree.UWB location technology is high to the coherence request of performance in antenna all directions, and UWB antenna on the market is all difficult to meet
It is required.
Summary of the invention
To solve the technical problem, the disclosure provides a kind of antenna alignment method and device, realizes antenna optimum signal
Direction alignment target direction；The optimum signal direction is a horizontal direction angle angular range, in optimum signal direction scope
Interior, at least one antenna performance index can reach optimum efficiency, and the performance indicator includes gain, gain flatness, phase
Flatness etc.；Antenna optimum signal direction is obtained in Antenna Design and test phase, is that angular range is determined known to one.
It is as follows that the present invention solves the technical solution that above-mentioned technical problem is taken:
A kind of antenna alignment method, comprising:
Base station end searches for ustomer premises access equipment；
After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；
Judge the above-mentioned deflection measured whether in optimum signal direction angle range；
If antenna is without rotation in optimum orientation angular region；
If calculating aerial array needs rotational angle and its direction not in optimum orientation angular region；
Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, in pause a moment, then repeat measurement user
Relative to the deflection where base station end, and again, calculating aerial array needs rotational angle and its direction at end, and rotates day again
Linear array.
Preferably, for the ustomer premises access equipment in working condition, separated in time emits a wireless signal, so as to
Base station end detection and search.
Preferably, measurement user terminal is relative to the deflection where base station end, comprising:
When aerial array all antenna elements not in the same vertical plane, i.e. the measurable horizontal direction angle of aerial array
Range is 0 to 360 degree；
Between 0 to 360 degree, several angle values are equably taken, user terminal are placed on these deflections, measurement obtains
The corresponding deflection preliminary measurement of these deflection actual values obtains other deflection preliminary surveyings using neighbor interpolation method
It is worth corresponding deflection actual value estimated value, this deflection actual value estimated value is final direction angle measurement.
Preferably, measurement user terminal is relative to the deflection where base station end, comprising:
All antenna elements of aerial array in the same vertical plane, i.e. the measurable horizontal direction angular region of aerial array
It is 0 to 180 degree；
It is assumed that vertical plane where antenna element is the vertical plane where 0 degree and 180 degree；
0 between 180 degree, several angle values are equably taken, user terminal are placed on these deflections, measurement obtains
The corresponding deflection preliminary measurement of these deflection actual values obtains other deflection preliminary surveyings using neighbor interpolation method
It is worth corresponding deflection actual value estimated value, this deflection actual value estimated value is final direction angle measurement.
Preferably, if not in optimum orientation angular region, calculating aerial array needs rotational angle and its direction, also wraps
It includes:
Calculate differential seat angle and its direction of optimum orientation angular bisector direction and user terminal direction；If the angle
It spends poor absolute value and is less than or equal to 180 degree, then this differential seat angle and its direction are that antenna needs rotational angle and its direction；If described
Differential seat angle absolute value is greater than 180 degree, then taking 360 degree to subtract this differential seat angle as antenna needs rotational angle, this differential seat angle direction
Opposite direction needs rotation direction as antenna.
Preferably, if not in optimum orientation angular region, calculating aerial array needs rotational angle and its direction, also wraps
It includes:
It is assumed that optimum signal deflection within the scope of 0 to 180 degree, then above-mentioned measured value should unanimously take positive value, as user
Direction angle is held, then calculate aerial array by the first situation to need rotational angle and its direction.
Preferably, based on the absolute position encoder being mounted on the base, the absolute angle that motor turns over, i.e. day are measured
The absolute angular position of line mounting platform and aerial array direction；Using Field orientable control FOC or space vector of voltage
SVPWM close-loop control scheme realizes the control to motor speed and rotational angle；
Wherein, when antenna optimum signal direction be aligned user terminal when, measure user terminal relative to aerial array place side
To angle；Aerial array towards absolute angle plus user terminal relative to aerial array direction angle, can accurately measure
Absolute direction angle where obtaining user terminal；
Antenna optimum signal direction be aligned user terminal after, measure user terminal and base station end relative distance, in conjunction with
Absolute direction angle, that is, realize relative positioning and the tracking of user terminal where the end of family.
A kind of antenna alignment device, including ustomer premises access equipment and base station end device；The ustomer premises access equipment includes wireless hair
Penetrate machine or transceiver and control unit；
The base station end device includes wireless receiver or transceiver, further includes one group of aerial array and angle measurement mould
Block and the control of the motor and base station end of controlling rotary angle and rotation direction and computing unit；
Wherein, the base station end control and computing unit, search for ustomer premises access equipment for base station end；
After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；
Judge the above-mentioned deflection measured whether in optimum signal direction angle range；
If antenna is without rotation in optimum orientation angular region；
If calculating aerial array needs rotational angle and its direction not in optimum orientation angular region；
Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, in pause a moment, then repeat measurement user
Relative to the deflection where base station end, and again, calculating aerial array needs rotational angle and its direction at end, and rotates day again
Linear array.
Preferably, the user terminal control unit opens and closes operating mode for controlling ustomer premises access equipment, in work
When operation mode is opened, wireless transmitter or transceiver are controlled at interval of certain time and emits a wireless signal, so as to base station end
Detection and search；
Preferably, the aerial array includes at least two antenna elements, and all antenna elements can be same vertical
It, can not also be in the same vertical plane on face；
Preferably, the Angle Measurement Module, connect with aerial array, and the signal that processing antenna array receiver arrives turns
It is changed to deflection preliminary measurement of the user terminal relative to base station end；The motor, for accurately controlling its rotational angle and turning
Dynamic direction, and aerial array can be driven to rotate synchronously.
It is additionally provided with absolute position encoder, is mounted on the base, the absolute position encoder, for measuring motor
The absolute angle turned over, the i.e. absolute angular position of antenna mounting platform and aerial array direction；Using Field orientable control FOC
Or voltage space vector close-loop control scheme, realize the control to motor speed and rotational angle；
Wherein, when antenna optimum signal direction be aligned user terminal when, measure user terminal relative to aerial array place side
To angle；Aerial array towards absolute angle plus user terminal relative to aerial array direction angle, can accurately measure
Absolute direction angle where obtaining user terminal；
Antenna optimum signal direction be aligned user terminal after, measure user terminal and base station end relative distance, in conjunction with
Absolute direction angle, that is, realize relative positioning and the tracking of user terminal where the end of family.
Method and device provided by the invention can control antenna optimum signal direction to be directed at communication target, to improve day
The communication quality of line in all directions, greatly improves the omni-directional of each performance indicator of antenna；Skill is positioned particularly with UWB
Art, so that the performance indicator that wireless signal is consistent in all directions, realizes higher positioning accuracy.It is provided by the invention
Antenna alignment method repeatedly, has stability, and antenna direction will finally converge on optimum signal direction after repeatedly adjusting.
The angle measurement provided by the invention determined using neighbor interpolation method, can accelerate antenna direction to converge on optimum signal direction.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
The present invention is described in detail with reference to the accompanying drawing, so that above-mentioned advantage of the invention is definitely.Its
In,
Fig. 1 is a kind of flow chart of antenna alignment method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the base station end of antenna alignment device provided in an embodiment of the present invention；
Fig. 3 is a kind of aerial array schematic diagram being horizontally mounted provided in an embodiment of the present invention；
Fig. 4 is the vertically-mounted aerial array schematic diagram of one kind provided in an embodiment of the present invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
As shown in Figs 1-4, the disclosure provides a kind of antenna alignment method and device, described device include ustomer premises access equipment and
Base station end device；The ustomer premises access equipment includes wireless transmitter or transceiver and control unit；The base station end device packet
Wireless receiver or transceiver are included, further includes the electricity that one group of aerial array and controllable aerial array rotate in the horizontal direction
Machine.
The present invention provides a kind of antenna alignment method, and the method step includes:
Base station end searches for ustomer premises access equipment, and for the ustomer premises access equipment in working condition, separated in time transmitting is primary
Wireless signal, so that base station end detects and searches for；
After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；
Judge the above-mentioned deflection measured whether in optimum signal direction angle range；
If antenna is without rotation in optimum orientation angular region；
If calculating aerial array in two kinds of situation needs rotational angle and its direction not in optimum orientation angular region；
For the first case, not in the same vertical plane, i.e., aerial array can be surveyed all antenna elements of aerial array
The horizontal direction angular region of amount is 0 to 360 degree.For this case, first calculates optimum orientation angular bisector direction and use
The differential seat angle of family end direction and its direction；If the differential seat angle absolute value be less than or equal to 180 degree, this differential seat angle and its
Direction is that antenna needs rotational angle and its direction；If the differential seat angle absolute value is greater than 180 degree, 360 degree are taken to subtract this angle
Degree difference needs rotational angle as antenna, and the opposite direction in this differential seat angle direction needs rotation direction as antenna.
For second situation, in the same vertical plane, i.e., aerial array can measure all antenna elements of aerial array
Horizontal direction angular region be 0 to 180 degree, it is assumed that antenna element is on the vertical plane where 0 degree and 180 degree at this time, and 0 degree
Extremely -180 degree measurement result is identical as 0 to 180 degree, i.e., can not judge the positive and negative value at user terminal direction angle.For
This case, it is assumed that optimum signal deflection is within the scope of 0 to 180 degree, then above-mentioned measured value should unanimously take positive value, as user
Direction angle is held, then calculate aerial array by the first situation to need rotational angle and its direction.
Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, in pause a moment, then repeat measurement user
Relative to the deflection where base station end, and again, calculating aerial array needs rotational angle and its direction at end, and rotates day again
Linear array.After being so repeated several times, the optimum signal direction of aerial array is then directed at user terminal to dynamic.
In order to improve the stability of system, method packet of the measurement user terminal relative to the deflection where base station end
It includes:
In 0 to 360 degree or 0 between 180 degree (antenna array unit is not in same vertical plane or in same vertical plane),
It is even or anisotropically take several angle values, user terminal is placed on these deflections, measurement obtains these deflection actual values
It is real to obtain the corresponding deflection of other deflection preliminary measurements using neighbor interpolation method for corresponding deflection preliminary measurement
Actual value estimated value, this deflection actual value estimated value are final direction angle measurement.
Optionally, can also median filtering be carried out to final direction angle measurement, will further improve stability.
The present invention provides a kind of antenna alignment device, and described device includes ustomer premises access equipment and base station end device；
The ustomer premises access equipment includes wireless transmitter or transceiver and user terminal control unit；
The user terminal control unit opens and closes operating mode for controlling ustomer premises access equipment, opens in operating mode
When, wireless transmitter or transceiver are controlled at interval of certain time and emits a wireless signal, so that base station end detects and searches for.
The base station end device includes wireless receiver or transceiver, further includes one group of aerial array and angle measurement mould
Block and the control of the motor and base station end of controlling rotary angle and rotation direction and computing unit.
The aerial array includes at least two antenna elements, and all antenna elements can in the same vertical plane, can also
With not in the same vertical plane.
The Angle Measurement Module, connect with aerial array, and the signal that processing antenna array receiver arrives is converted to user terminal
Deflection preliminary measurement relative to base station end.
The motor can accurately control its rotational angle and rotation direction, and aerial array can be driven to rotate synchronously.
The base station end control and computing unit, search for ustomer premises access equipment for base station end, further includes:
After base station end searches ustomer premises access equipment, deflection preliminary measurement is obtained from Angle Measurement Module, and be converted to
Final stable direction angle measurement；The method that the preliminary measurement is converted to final measured value includes:
0 to 360 degree or 0 between 180 degree (antenna array unit not in same vertical plane, for 0 to 360 degree；It
Linear array column unit is 0 to 180 degree, it is assumed that above-mentioned vertical plane is vertical plane where 0 degree and 180 degree, antenna in same vertical plane
Optimum signal direction is 0 between 180 degree), several angle values are uniformly or non-uniformly taken, user terminal is placed in these directions
On angle, measurement obtains the corresponding deflection preliminary measurement of these deflection actual values and obtains its other party using neighbor interpolation method
To the corresponding deflection actual value estimated value of angle preliminary measurement, this deflection actual value estimated value is final deflection
Measured value.
Using stable direction angle measurement, calculating aerial array needs rotational angle and its direction, the calculation method packet
Two kinds are included, suitable for different aerial arrays (array element is not in same vertical plane and in same vertical plane), the method packet
It includes:
In the case of first method is applicable in, all antenna elements of aerial array not in the same vertical plane, i.e. day
The measurable horizontal direction angular region of linear array is 0 to 360 degree.For this case, optimum orientation angular bisector institute is first calculated
In the differential seat angle and its direction of direction and user terminal direction；If the differential seat angle absolute value is less than or equal to 180 degree, this
Differential seat angle and its direction are that antenna needs rotational angle and its direction；If the differential seat angle absolute value is greater than 180 degree, 360 are taken
Degree, which subtracts this differential seat angle as antenna, needs rotational angle, and the opposite direction in this differential seat angle direction needs rotation direction as antenna.
In the case of second method is applicable in, all antenna elements of aerial array in the same vertical plane, i.e. antenna
The measurable horizontal direction angular region of array is 0 to 180 degree, it is assumed that antenna element is vertical where 0 degree and 180 degree at this time
On face, and 0 degree of extremely -180 degree measurement result is identical as 0 to 180 degree, i.e., can not judge the positive and negative of user terminal direction angle
Value.For this case, it is assumed that optimum signal deflection is within the scope of 0 to 180 degree, then above-mentioned measured value should unanimously take just
Value needs rotational angle and its direction as user terminal direction angle, then by the first situation calculating aerial array.
Rotational angle and its direction controlling motor is needed to rotate according to aerial array, pause a moment after the completion of rotation；
The above-mentioned step searched after ustomer premises access equipment is repeated, controls motor rotation in real time.
Wherein, more specifically, for base station end structure as shown in figure 3, unit 31 is aerial array, unit 32 is antenna peace
Assembling platform, unit 33 are Angle Measurement Module and control and computing unit, and unit 34 is motor and pedestal.
For user terminal, comprising: antenna element 41 and mounting base 42.
Wherein, enter operating mode and then enable timer, timing terminates, and sends a wireless signal, and restart timing
Device, and so on until user's control exits operating mode.
For base station end, workflow includes:
S21: the wireless signal of search ustomer premises access equipment, ustomer premises access equipment transmitting includes user terminal unique identification, for knowing
Not different user terminals；Base station end obtains ustomer premises access equipment unique identifying number to be searched from higher level's control system, and base station end will
Antenna alignment is carried out with the user terminal that higher level's control system is specified；
S22: user terminal is obtained relative to the deflection where base station end from Angle Measurement Module, this value is preliminary surveying
Value.
The angle value range of Angle Measurement Module output is related by the unit number and unit arrangement mode of aerial array.
For example, aerial array as shown in Figure 4, is made of three antenna elements, is triangularly arranged on horizontal plane, then angle measurement mould
The angular range of block output is 0 to 360 degree；Such as aerial array, it is made of two antenna elements, in same level, then angle
The angular range of degree measurement module output is 0 between 180 degree.
Since the antenna of actual fabrication is not ideal antenna, upper incidence can generate small phase to wireless signal from different directions
Position offset and shake, thus the preliminary measurement that need to be exported to Angle Measurement Module is corrected and eliminates shake, so that system
It is more stable.The present invention uses neighbouring differential technique correction angle and eliminates shake.
In an embodiment, using a kind of omnidirectional antenna, two antenna spacing half-wavelengths；Angle Measurement Module, which uses, is based on UWB
The direction of arrival degree measurement module of technology and PDOA (Phase Difference ofArrival reaches phase difference) technology.
The antenna optimum signal direction of the embodiment is between 80 degree to 100 degree, antenna gain, flat gain at this time
Degree, phase flatness all reach optimum efficiency, and higher positioning accuracy can be achieved applied to UWB positioning.For correction angle and disappear
Except shake, is taken a bit between 180 degree at interval of 10 degree 0, obtain the angle preliminary measurement of Angle Measurement Module output, such as
Shown in the following table 1:
Table 1
| Actual angle (°) | Preliminary measurement (°) |
| 0 | 16 |
| 10 | 20 |
| 20 | 25 |
| 30 | 32 |
| 40 | 39 |
| 50 | 52 |
| 60 | 58 |
| 70 | 68 |
| 80 | 79 |
| 90 | 90 |
| 100 | 100 |
| 110 | 110 |
| 120 | 120 |
| 130 | 130 |
| 140 | 138 |
| 150 | 147 |
| 160 | 157 |
| 170 | 150 |
| 180 | 18 |
Using 1 sample point data of table, using neighbouring differential technique correction angle and shake is eliminated, such as Angle Measurement Module is defeated
When angle preliminary measurement out is 22 degree, then the final angle value after correcting is 10 degree；For another example when preliminary measurement is 95 degree,
Final angle value is 100 degree；Particularly, when preliminary measurement is 18 degree, final angle value should take 10 degree, without that should take 180
Degree is used as final angle value.The correction angle and elimination dither method, can make system operation more stable.Optionally,
Median filtering can also be carried out to final angle value, will further increase system stability.
S23: judge the final measured value of above-mentioned deflection whether in optimum signal direction angle range.If at optimum orientation angle
In range, then antenna is without rotation；If calculating aerial array in two kinds of situation needs angle of rotation not in optimum orientation angular region
Degree and its direction.
For the first case, not in the same vertical plane, i.e., aerial array can be surveyed all antenna elements of aerial array
The horizontal direction angular region of amount is 0 to 360 degree, such as aerial array shown in Fig. 4.For this case, best side is first calculated
To the differential seat angle and its direction of angular bisector direction and user terminal direction；If the differential seat angle absolute value is less than or waits
In 180 degree, then this differential seat angle and its direction are that antenna needs rotational angle and its direction；If the differential seat angle absolute value is greater than
180 degree, then taking 360 degree to subtract this differential seat angle as antenna needs rotational angle, and the opposite direction in this differential seat angle direction is needed as antenna
Rotation direction.
For second situation, all antenna elements of aerial array in the same vertical plane, such as a kind of aerial array,
The measurable horizontal direction angular region of aerial array is 0 to 180 degree at this time, it is assumed that antenna element is where 0 degree and 180 degree at this time
Vertical plane on, and 0 degree of measurement result to -180 degree is identical as 0 to 180 degree, i.e., can not judge user terminal direction
The positive and negative value at angle.For this case, it is assumed that optimum signal deflection is within the scope of 0 to 180 degree, then above-mentioned measured value answers one
Cause takes positive value, needs rotational angle and its direction as user terminal direction angle, then by the first situation calculating aerial array.Example
Such as S22 the embodiment described, calculating aerial array using second situation the method needs rotational angle and its direction, at this time most
Good direction angular bisector direction is 90 degree；Such as final angle measured value is 10 degree at this time, then aerial array needs angle of rotation
Degree is 80 degree, and direction is to rotate forward.
S24: motor drive aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, pause a moment, when pause
Between decision systems sensitivity and stability, it is unsuitable too short or too long；For embodiment described herein, time out is 200 millis
Second.
The embodiment uses a kind of servo motor, can accurately control angle, speed and the direction of motor rotation.
Step S22 to S24 is repeated, final antenna will be directed at optimum signal direction.
For S22 the embodiment described, if user terminal between 0 degree to -180 degree, according to the method for the invention, together
Sample can make 80 degree to 100 degree of final antenna alignment optimum signal direction；Such as user terminal spends direction -30, angle is preliminary at this time
Measured value is 32 degree, and by step S22 the method, the final angle measured value after correction is 30 degree, then the side as described in S23
Method, can calculate antenna need rotational angle be 60 degree, rotation direction be rotating forward；As described in S24,200 milli of pause after antenna rotation
Second, step described in S22 to S24 is then repeated, carries out the second wheel alignment, the final angle measured value after correcting at this time will about
Be 30 degree, calculate second wheel antenna need angle of rotation be 60 degree, rotation direction be forward direction, antenna second wheel rotate after suspend 200
Millisecond, then measure to obtain final angle measured value and will be about 90 degree, in optimum orientation angular region, antenna will no longer be required to turn
It is dynamic, and aligned optimum signal direction.
The embodiment also uses a kind of absolute position encoder, is mounted on the base, and turns over measuring motor
Absolute angle, the i.e. absolute angular position of antenna mounting platform and aerial array direction；Using FOC (Field-Oriented
Control, Field orientable control) or SVPWM (SPACE VECTOR PULSE WIDTH MODULATION) (Sinusoidal
PWM) close-loop control scheme realizes the control to motor speed and rotational angle.
For the embodiment when antenna optimum signal direction is directed at user terminal, it is opposite that energy accurately measure obtains user terminal
In aerial array direction angle；Aerial array towards absolute angle plus user terminal relative to aerial array direction angle,
Can accurately measure obtain absolute direction angle where user terminal.The embodiment is directed at user terminal in antenna optimum signal direction
Afterwards, can also high-acruracy survey obtain the relative distance of user terminal and base station end, absolute direction angle, that is, realize in conjunction with where user terminal
The relative positioning of user terminal and tracking.A kind of antenna alignment device provided in an embodiment of the present invention can be applied to target following.
The invention is not limited to above-mentioned specific embodiments.Those skilled in the art can carry out the present invention various
Modification and variation is without departing from the spirit and scope of the present invention.In this way, if these modifications and changes of the present invention belongs to this hair
Within the scope of bright claim and its equivalent technologies, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of antenna alignment method characterized by comprising
Base station end searches for ustomer premises access equipment；
After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；
Judge the above-mentioned deflection measured whether in optimum signal direction angle range；
If antenna is without rotation in optimum orientation angular region；
If calculating aerial array needs rotational angle and its direction not in optimum orientation angular region；
Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, pause a moment then repeats measurement user terminal phase
For the deflection where base station end, and again, calculating aerial array needs rotational angle and its direction, and rotary antenna battle array again
Column.
2. the method as described in claim 1, which is characterized in that the ustomer premises access equipment is in working condition, one timing of interval
Between emit a wireless signal, so as to base station end detect and search for.
3. the method as described in claim 1, which is characterized in that measurement user terminal is relative to the deflection where base station end, packet
It includes:
When aerial array all antenna elements not in the same vertical plane, i.e. the measurable horizontal direction angular region of aerial array
For 0 to 360 degree；
Between 0 to 360 degree, several angle values are equably taken, user terminal is placed on these deflections, measurement obtains these
The corresponding deflection preliminary measurement of deflection actual value obtains other deflection preliminary measurements pair using neighbor interpolation method
The deflection actual value estimated value answered, this deflection actual value estimated value are final direction angle measurement.
4. the method as described in claim 1, which is characterized in that measurement user terminal is relative to the deflection where base station end, packet
It includes:
In the same vertical plane, i.e., the measurable horizontal direction angular region of aerial array is 0 to all antenna elements of aerial array
To 180 degree；
It is assumed that vertical plane where antenna element is the vertical plane where 0 degree and 180 degree；
0 between 180 degree, several angle values are equably taken, user terminal is placed on these deflections, measurement obtains these
The corresponding deflection preliminary measurement of deflection actual value obtains other deflection preliminary measurements pair using neighbor interpolation method
The deflection actual value estimated value answered, this deflection actual value estimated value are final direction angle measurement.
5. method as claimed in claim 3, which is characterized in that if not calculating aerial array in optimum orientation angular region
Need rotational angle and its direction, further includes:
Calculate differential seat angle and its direction of optimum orientation angular bisector direction and user terminal direction；If the differential seat angle
Absolute value is less than or equal to 180 degree, then this differential seat angle and its direction are that antenna needs rotational angle and its direction；If the angle
Poor absolute value is greater than 180 degree, then taking 360 degree to subtract this differential seat angle as antenna needs rotational angle, the negative side in this differential seat angle direction
Rotation direction is needed to as antenna.
6. method as claimed in claim 4, which is characterized in that if not calculating aerial array in optimum orientation angular region
Need rotational angle and its direction, further includes:
It is assumed that optimum signal deflection within the scope of 0 to 180 degree, then above-mentioned measured value should unanimously take positive value, as user terminal institute
Rotational angle and its direction are needed in deflection, then by the first situation calculating aerial array.
7. the method as described in claim 1, which is characterized in that further include:
Based on the absolute position encoder being mounted on the base, measure the absolute angle that motor turns over, i.e., antenna mounting platform and
The absolute angular position of aerial array direction；Using Field orientable control FOC or voltage space vector closed-loop control side
Case realizes the control to motor speed and rotational angle；
Wherein, when antenna optimum signal direction be aligned user terminal when, measure user terminal relative to aerial array direction angle；
Aerial array towards absolute angle plus user terminal relative to aerial array direction angle, can accurately measure obtain user
Absolute direction angle where end；
Antenna optimum signal direction be aligned user terminal after, measure user terminal and base station end relative distance, in conjunction with user terminal
Place absolute direction angle realizes relative positioning and the tracking of user terminal.
8. a kind of antenna alignment device, which is characterized in that including ustomer premises access equipment and base station end device；The ustomer premises access equipment packet
Containing wireless transmitter or transceiver and control unit；
The base station end device includes wireless receiver or transceiver, further includes one group of aerial array and Angle Measurement Module, and
The control of the motor and base station end of controlling rotary angle and rotation direction and computing unit；
Wherein, the base station end control and computing unit, search for ustomer premises access equipment for base station end；
After base station end searches ustomer premises access equipment, user terminal is measured relative to the deflection where base station end；
Judge the above-mentioned deflection measured whether in optimum signal direction angle range；
If antenna is without rotation in optimum orientation angular region；
If calculating aerial array needs rotational angle and its direction not in optimum orientation angular region；
Aerial array according to it is above-mentioned need rotational angle and its direction to rotate after, pause a moment then repeats measurement user terminal phase
For the deflection where base station end, and again, calculating aerial array needs rotational angle and its direction, and rotary antenna battle array again
Column.
9. antenna alignment device as claimed in claim 8, which is characterized in that the user terminal control unit is for controlling user
End equipment opens and closes operating mode, when operating mode is opened, controls wireless transmitter or transceiver at interval of a timing
Between emit a wireless signal, so as to base station end detect and search for.
10. antenna alignment device as claimed in claim 8, which is characterized in that the aerial array includes at least two antennas
Unit, all antenna elements can in the same vertical plane, can not also be in the same vertical plane.
11. antenna alignment device as claimed in claim 8, which is characterized in that the Angle Measurement Module connects with aerial array
It connects, the signal that processing antenna array receiver arrives is converted to deflection preliminary measurement of the user terminal relative to base station end；The electricity
Machine for accurately controlling its rotational angle and rotation direction, and can drive aerial array to rotate synchronously.
12. antenna alignment device as claimed in claim 8, which is characterized in that be additionally provided with absolute position encoder, install
In on pedestal, the absolute position encoder, the absolute angle turned over for measuring motor, i.e. antenna mounting platform and antenna array
The absolute angular position of column direction；Using Field orientable control FOC or voltage space vector close-loop control scheme, realize
Control to motor speed and rotational angle；
Wherein, when antenna optimum signal direction be aligned user terminal when, measure user terminal relative to aerial array direction angle；
Aerial array towards absolute angle plus user terminal relative to aerial array direction angle, can accurately measure obtain user
Absolute direction angle where end；
Antenna optimum signal direction be aligned user terminal after, measure user terminal and base station end relative distance, in conjunction with user terminal
Place absolute direction angle realizes relative positioning and the tracking of user terminal.
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