CN106209196A - A kind of phase compensating method based on many array element Channel assignment and system - Google Patents
A kind of phase compensating method based on many array element Channel assignment and system Download PDFInfo
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- CN106209196A CN106209196A CN201610509644.2A CN201610509644A CN106209196A CN 106209196 A CN106209196 A CN 106209196A CN 201610509644 A CN201610509644 A CN 201610509644A CN 106209196 A CN106209196 A CN 106209196A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0868—Hybrid systems, i.e. switching and combining
- H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A kind of phase compensating method based on many array element Channel assignment, comprise the following steps: for each bay, one corresponding and independent tracking channel is set, follow the tracks of the electromagnetic wave signal that the corresponding bay of channel locks receives, and all of bay all receives same electromagnetic wave beam signal；After at least two or more tracking channel receives electromagnetic wave beam signal, the channel output signal intensity of locking tracking channel and carrier phase nco value；The channel strength following the tracks of channel of monitoring locking in real time, when the signal intensity of the most a certain tracking channel is more than the signal intensity of currently used bay, then switches bay；Extract real-time goes out the carrier phase nco value of the two, and calculates carrier phase difference therebetween；Being compensated by carrier phase difference in the middle of down coversion DDC module, switching completes.The present invention maintains the continuous of carrier phase in bay handoff procedure.
Description
Technical field
The present invention relates to satellite communication field, a kind of phase compensating method based on many array element Channel assignment and
System.
Background technology
Satellite communication system is made up of satellite end, ground surface end, user side three part.Satellite end aloft plays the work of relay station
After amplifying with, the electromagnetic wave i.e. earth station put forward, foldback goes back to another earth station again, and satellite health includes again two big subsystems:
Satellite borne equipment and satellite parent.Earth station is then the interface of satellite system and ground public network, and terrestrial user can also be by ground
Station, face discrepancy satellite system forms link, and earth station also includes ground satellite control centre, and tracking, Telemetry And Command station.
User side is i.e. various user terminal.
In satellite communication system, the wave beam of satellite-signal has directivity, antenna just signal intensity ratio to arrival bearing
Strong some dB back to direction.For many array-element antenna, need to select in real time closest to just array element to arrival bearing
Channel, simultaneously because each element position of antenna is different, the signal code phase place received and carrier phase also can be variant.Because
Chip lengths is longer, and therefore the difference of signal code phase place is little, but carrier signal is because carrier cycle is shorter, and array element selects to cut
Carrier phase difference during changing is if it exceeds the tolerance of carrier wave ring may result in downstream receiver track loop losing lock.
Existing satellite communication system is all the signal of one array element of fixed reception during antenna receiving signal, there is no channel
Select.Therefore, in the environment of signal is more weak, the signal intensity that four array elements of antenna receive not is consistent.Towards
The array element signals of arrival bearing is higher, if using the signal receiver of this array element, can receive signal normally, but working as
Antenna rotates when causing this array element back to arrival bearing, then signal intensity can decline, thus causes receiver losing lock；Even if simultaneously
The signal of all directions is sufficiently strong, and direct channels switching also results in access DDC (Digital Down Converter, numeral
Down coversion) signal phase of down conversion module is discontinuous, especially because carrier cycle is shorter, downstream receiver carrier loop pair
The phase continuity of carrier wave requires that height, switching array element cause carrier phase that downstream receiver the most then may be caused to follow the tracks of ring
Carrier loop generation losing lock.
Summary of the invention
It is an object of the invention to: when providing a kind of antenna receiving signal, in array element handoff procedure, carrier phase continuous print is many
The phase compensating method of array element Channel assignment.
Carrier phase continuous print in array element handoff procedure when it is a further object of the present invention to provide a kind of antenna receiving signal
The Phase Compensation System of many array element Channel assignment.
In order to solve above-mentioned technical problem, the present invention is achieved in that a kind of phase place based on many array element Channel assignment
Compensation method, including two or more bay, further comprising the steps of:
S1 arranges tracking channel: arrange a corresponding and independent tracking channel for each bay, described with
The electromagnetic wave signal of the bay reception that track channel tracking is corresponding with locking, and all of bay all receives same
Electromagnetic wave beam signal；
S2 semaphore lock: after at least two tracking channel receives and lock onto described electromagnetic wave beam signal, lock institute
State at least two and follow the tracks of channel output signal intensity and the carrier phase nco value of channel；
S3 signal compares: the channel strength following the tracks of channel of locking in monitoring S2, and the signal intensity that will detect in real time
Compare with the signal intensity of currently used bay A, when the signal intensity of the most a certain tracking channel b is more than current
During the signal intensity of bay A used, then switching described bay B corresponding for tracking channel b is currently used sky
Linear array unit；
S4 calculates carrier phase difference: during switching bay, and extract real-time goes out bay A and follows the tracks of tracking in channel b
The carrier phase nco value of ring, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
S5 bay switches: when adjusting pulse and arriving, switch bay immediately, simultaneously by calculated for S4 load
Wave phase difference compensates in the middle of down coversion DDC module, and bay has switched.
Preferably, S1 also includes ADC digital-to-analogue conversion process: described tracking channel will receive corresponding antenna array
X electromagnetic wave beam signal in unit carries out ADC analog-to-digital conversion process.
Preferably, carrier phase difference sequentially passes through again anti-interference process, on DUC after compensating in the middle of down coversion DDC module
Frequency-variable module and DA output, be finally received by downstream receiver.
A kind of Phase Compensation System based on many array element Channel assignment, including two or more bay, also includes following
Module:
Follow the tracks of channel module: one corresponding and independent tracking channel, described tracking are set for each bay
The electromagnetic wave signal of the bay reception that channel tracking is corresponding with locking, and all of bay all receives same electricity
Magnetic wave beam signal；
Semaphore lock module: after at least two tracking channel receives and lock onto described electromagnetic wave beam signal, locking
Described at least two follows the tracks of channel output signal intensity and the carrier phase nco value of channel；
Comparison module: the in real time channel strength following the tracks of channel of locking in monitoring S2, and by the signal intensity that detects with
The signal intensity of currently used bay A compares, when the signal intensity of the most a certain tracking channel b is more than currently making
The signal intensity of bay A time, then switching described bay B corresponding for tracking channel b is currently used antenna
Array element；
Calculate carrier phase difference module: during switching bay, extract real-time go out bay A and follow the tracks of in channel b with
The carrier phase nco value of track ring, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
Bay handover module: when adjusting pulse and arriving, switch bay immediately, simultaneously that S4 is calculated
Carrier phase difference compensates in the middle of down coversion DDC module, and bay has switched.
Control module: for controlling described tracking channel module, semaphore lock module, comparison module, calculating carrier wave respectively
Phase difference module and bay handover module；
Described tracking channel module and semaphore lock module, comparison module, calculating carrier phase difference module and bay
Handover module is sequentially connected with.
Preferably, also include ADC D/A converter module, for described tracking channel will be received corresponding antenna
Electromagnetic wave beam signal in array element carries out ADC analog-to-digital conversion process, described ADC D/A converter module and described tracking channel mould
Block is connected.
Preferably, also include anti-interference process module, DUC up-converter module and DA output module, array element signal from
Described anti-interference process module, DUC up-converter module and DA output module is sequentially passed through again after the output of described down coversion DDC module
Finally received by downstream receiver.
Preferably, described control module, down coversion DDC module, anti-interference process module, DUC up-converter module and DA are defeated
Going out module all uses fpga chip to realize.
Relative to prior art, the present invention is that each bay arranges an independent tracking channel, follows the tracks of channel choosing
The signal of each bay is tracked by fixed same wave beam, when the signal stabilization of bay is followed the tracks of, monitors each sky
The signal intensity of line array element signals and real-time carrier phase NCO.When the signal intensity of a certain tracking channel is more than currently used
During the signal intensity of bay, then switch over, handoff procedure calculates the carrier phase nco value of bay before switching
With the difference of the carrier phase nco value of switching aft antenna array element, compensate in the array element signal after switching, to keep carrier wave
Phase place continuous.
Accompanying drawing explanation
Fig. 1 is the block diagram of a kind of phase compensating method based on many array element Channel assignment of the present invention.
Fig. 2 is the theory diagram of a kind of Phase Compensation System based on many array element Channel assignment of the present invention.
Fig. 3 is theory diagram (the bay number of a kind of Phase Compensation System based on many array element Channel assignment of the present invention
It is 4).
Fig. 4 is semaphore lock and phase compensation in a kind of Phase Compensation System based on many array element Channel assignment of the present invention
Theory diagram.
Detailed description of the invention
Referring to Fig. 1-Fig. 4, a kind of phase compensating method based on many array element Channel assignment, including two or more antenna array
Unit, further comprising the steps of:
S1: one corresponding and independent tracking channel is set for each bay, described tracking channel tracking and
Lock the electromagnetic wave signal that corresponding bay receives, and all of bay all receives same electromagnetic wave beam letter
Number；
S1-1: also include that (Analog-to-digital converter analog-digital converter is for simulating to ADC
The continuous signal of form is converted to a kind equipment of the discrete signal of digital form) digital-to-analogue conversion process: described tracking channel will
The electromagnetic wave beam signal received in corresponding bay carries out ADC analog-to-digital conversion process.
S2: when at least two is followed the tracks of after channel receives and lock onto described electromagnetic wave beam signal, described in locking at least two
The channel output signal intensity of individual tracking channel and carrier phase NCO (numerically controlled oscillator,
Numerically-controlled oscillator) value；
S3: the in real time channel strength following the tracks of channel of locking in monitoring S2, and by the signal intensity detected with currently make
The signal intensity of bay A compare, when the signal intensity of the most a certain tracking channel B is more than currently used sky
During the signal intensity of linear array unit A, then switching described bay B corresponding for tracking channel b is currently used bay, this
In A and B also for referring to；
S4: during switching bay, extract real-time goes out bay A and follows the tracks of tracking ring (tracking ring: comprise in channel b
Carrier wave ring and code ring, be inherently digital phase-locked loop, and spread spectrum code and the carrier frequency-phase of the docking collection of letters number are carried out accurately
Follow the tracks of, adjust locally generated spread spectrum code in real time consistent with reception signal with carrier frequency-phase, reached the mesh of demodulation
) carrier phase nco value, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
S5: when adjusting pulse and arriving, switches bay immediately, is compensated by calculated for S4 carrier phase difference simultaneously
In the middle of down coversion DDC (Digital Down Converter, Digital Down Convert) module, bay has switched.
Above-mentioned carrier phase difference compensate down coversion DDC module (down coversion DDC module generates local carrier, this
Local carrier frequency needs consistent with the array element signal received with phase place, but bay is during switching,
Owing to the carrier phase of 2 array element signals is different, the signal after multi-path choice module can produce phase hit, so needing
Will by the local carrier in down coversion DDC module in time be adapted to receive signal carrier occur saltus step) in the middle of after
Again through anti-interference process, DUC (Digital Up Converter) up-converter module and DA (Digitalto Analog
Digital to analog converter, also known as D/A converter, is called for short DAC, and it is device digital quantity being transformed into simulation) output, finally by downstream
Receiver is received.
A kind of Phase Compensation System based on many array element Channel assignment, including two or more bay, also includes following
Module:
Follow the tracks of channel module: one corresponding and independent tracking channel, described tracking are set for each bay
The electromagnetic wave signal of the bay reception that channel tracking is corresponding with locking, and all of bay all receives same electricity
Magnetic wave beam signal；
Semaphore lock module: after at least two tracking channel receives and lock onto described electromagnetic wave beam signal, locking
Described at least two follows the tracks of channel output signal intensity and the carrier phase nco value of channel；
Comparison module: the in real time channel strength following the tracks of channel of locking in monitoring S2, and by the signal intensity that detects with
The signal intensity of currently used bay A compares, when the signal intensity of the most a certain tracking channel b is more than currently making
The signal intensity of bay A time, then switching described bay B corresponding for tracking channel b is currently used antenna
Array element, A here, B, b are and refer to；
Calculate carrier phase difference module: during switching bay, extract real-time go out bay A and follow the tracks of in channel b with
The carrier phase nco value of track ring, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
Bay handover module: when adjusting pulse and arriving, switch bay immediately, simultaneously that S4 is calculated
Carrier phase difference compensates in the middle of down coversion DDC module, and bay has switched.
Control module: for controlling described tracking channel module, semaphore lock module, comparison module, calculating carrier wave respectively
Phase difference module and bay handover module；
Described tracking channel module and semaphore lock module, comparison module, calculating carrier phase difference module and bay
Handover module is sequentially connected with.
Also include ADC D/A converter module, for being received in corresponding bay by described tracking channel
Electromagnetic wave beam signal carry out ADC analog-to-digital conversion process, described ADC D/A converter module and described tracking channel module phase
Even.
Also including anti-interference process module, DUC up-converter module and DA output module, array element signal is from described lower change
Frequently DDC module output after sequentially pass through again described anti-interference process module, DUC up-converter module and DA output module finally by under
Trip receiver receives.
Described control module, down coversion DDC module, anti-interference process module, DUC up-converter module and DA output module are equal
Employing fpga chip realizes.
Now as a example by bay number is 4, the present invention will be described:
As it is shown on figure 3, first, it is assumed that 4 bays are Z1, Z2, Z3 and Z4, arrange one solely for each bay
Channel is followed the tracks of in vertical reception, and set each array element follows the tracks of the channel ripple to the same wavelength in each self-corresponding bay
Bundle is received；
When after the tracking channel locks signal of at least 2 bay Z1, Z2 in 4 passages, then start to monitor in real time
The signal intensity following the tracks of channel that bay Z1, Z2 are corresponding；
Assume it is currently that bay Z1 signal is the strongest, by the rotation to antenna, the signal intensity of bay Z2 by
Gradually exceed bay Z1, then needed to carry out array element switching
During switching, extract real-time goes out bay Z1 and bay Z2 and follows the tracks of carrier phase NCO following the tracks of ring in channel,
And calculate two bay Z1, the carrier phase difference between Z2 signal in real time；
When adjusting pulse arrival, switch array element immediately, calculated carrier phase difference is compensated down coversion DDC simultaneously
In the middle of module, bay has switched.
The present invention is that each bay arranges an independent tracking channel, follows the tracks of channel and selectes same wave beam to respectively
The signal of individual bay is tracked, and when the signal stabilization of bay is followed the tracks of, monitors the signal of each array element signal
Intensity and real-time carrier phase NCO.When the array element channel of peak signal changes, then switching over, handoff procedure is fallen into a trap
Calculating the carrier phase nco value of the front bay of switching and the difference of the carrier phase nco value of switching aft antenna array element, compensation is arrived
In array element signal after switching, to keep the continuous of carrier phase.
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula changes and revises.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, to the present invention's
Some modifications and changes should also be as falling in the scope of the claims of the present invention.Although additionally, this specification using
Some specific terms, but these terms are merely for convenience of description, the present invention does not constitute any restriction.
Claims (7)
1. a phase compensating method based on many array element Channel assignment, including two or more bay, it is characterised in that also
Comprise the following steps:
S1 arranges tracking channel: arrange a corresponding and independent tracking channel for each bay, and described tracking is believed
The electromagnetic wave signal that corresponding bay receives is followed the tracks of and is locked in road, and all of bay all receives same electromagnetism
Ripple beam signal；
S2 semaphore lock: after at least two tracking channel receives and lock onto described electromagnetic wave beam signal, then locking is described
At least two follows the tracks of channel output signal intensity and the carrier phase nco value of channel；
S3 signal compares: the in real time signal intensity following the tracks of channel of locking in monitoring S2, and by the signal intensity detected with work as
The signal intensity of the bay A of front use compares, when the signal intensity of the most a certain tracking channel b is more than currently used
The signal intensity of bay A time, then switching described bay B corresponding for tracking channel b is currently used antenna array
Unit；
S4 calculates carrier phase difference: during switching bay, and extract real-time goes out bay A and follows the tracks of tracking ring in channel b
Carrier phase nco value, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
S5 bay switches: when adjusting pulse and arriving, switch bay immediately, simultaneously by calculated for S4 carrier wave phase
Displacement error compensation is in the middle of down coversion DDC module, and bay has switched.
A kind of phase compensating method based on many array element Channel assignment, it is characterised in that in S1 also
Including ADC digital-to-analogue conversion process: the electromagnetic wave beam signal that described tracking channel will receive in corresponding bay
Carry out ADC analog-to-digital conversion process.
A kind of phase compensating method based on many array element Channel assignment, it is characterised in that carrier wave phase
Displacement error compensation sequentially passes through again anti-interference process, DUC up-converter module and DA output, finally after in the middle of down coversion DDC module
It is received by downstream receiver.
4. a Phase Compensation System based on many array element Channel assignment, including two or more bay, it is characterised in that also
Including with lower module:
Follow the tracks of channel module: one corresponding and independent tracking channel, described tracking channel are set for each bay
Follow the tracks of and lock the electromagnetic wave signal that corresponding bay receives, and all of bay all receives same electromagnetic wave
Beam signal；
Semaphore lock module: after at least two tracking channel receives and lock onto described electromagnetic wave beam signal, locking is described
At least two follows the tracks of channel output signal intensity and the carrier phase nco value of channel；
Comparison module: the in real time channel strength following the tracks of channel of locking in monitoring S2, and by the signal intensity that detects with current
The signal intensity of the bay A used compares, when the signal intensity of the most a certain tracking channel b is more than currently used
During the signal intensity of bay A, then switching described bay B corresponding for tracking channel b is currently used bay；
Calculating carrier phase difference module: during switching bay, extract real-time goes out bay A and follows the tracks of tracking ring in channel b
Carrier phase nco value, and calculate carrier phase difference therebetween according to the carrier phase nco value of the two；
Bay handover module: when adjusting pulse and arriving, switch bay immediately, simultaneously by calculated for S4 carrier wave
Phase difference compensation is in the middle of down coversion DDC module, and bay has switched.
Control module: for controlling described tracking channel module, semaphore lock module, comparison module, calculating carrier phase respectively
Difference module and bay handover module；
Described tracking channel module and semaphore lock module, comparison module, calculating carrier phase difference module and bay switching
Module is sequentially connected with.
A kind of Phase Compensation System based on many array element Channel assignment, it is characterised in that also include
ADC D/A converter module, for the electromagnetic wave beam letter that will be received in corresponding bay by described tracking channel
Number carrying out ADC analog-to-digital conversion process, described ADC D/A converter module is connected with described tracking channel module.
A kind of Phase Compensation System based on many array element Channel assignment, it is characterised in that also include
Anti-interference process module, DUC up-converter module and DA output module, array element signal exports from described down coversion DDC module
After sequentially pass through again described anti-interference process module, DUC up-converter module and DA output module and finally received by downstream receiver.
A kind of Phase Compensation System based on many array element Channel assignment, it is characterised in that described control
Molding block, down coversion DDC module, anti-interference process module, DUC up-converter module and DA output module all use fpga chip real
Existing.
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| CN201610509644.2A CN106209196B (en) | 2016-06-30 | 2016-06-30 | A kind of phase compensating method and system based on more array element channel selections |
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| WO2024093192A1 (en) * | 2022-11-03 | 2024-05-10 | 普罗斯通信技术（苏州）有限公司 | Multi-operator carrier tracking method and apparatus for distributed antenna system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110031797A (en) * | 2019-04-18 | 2019-07-19 | 电子科技大学 | For passive sensor-based system to the detecting and tracking method with discontinuous characteristic target |
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| CN117706541B (en) * | 2024-02-06 | 2024-04-16 | 四川省华盾防务科技股份有限公司 | Phased array multi-target tracking method, device, equipment and storage medium |
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|---|---|
| CN106209196B (en) | 2019-11-12 |
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