CN107390236A - The method that satellite signal receiving apparatus and its satellite-signal to reception are handled - Google Patents
The method that satellite signal receiving apparatus and its satellite-signal to reception are handled Download PDFInfo
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- CN107390236A CN107390236A CN201710369505.9A CN201710369505A CN107390236A CN 107390236 A CN107390236 A CN 107390236A CN 201710369505 A CN201710369505 A CN 201710369505A CN 107390236 A CN107390236 A CN 107390236A
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- receiving apparatus
- yield value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Noise Elimination (AREA)
Abstract
A kind of method handled the invention discloses satellite signal receiving apparatus and its to the satellite-signal of reception.Wherein, the satellite signal receiving apparatus includes radio-frequency front-end, baseband circuit and is series at programmable gain amplifier in radio-frequency front-end and baseband circuit between digital filter, and methods described includes：When the yield value of VGA in the radio-frequency front-end is less than preset gain, and the IQ amplitudes of target satellite signal that filter out of the digital filter are when being less than default amplitude, the yield value of the programmable gain amplifier is adjusted, so that the IQ amplitudes reach the default amplitude；Otherwise, the yield value of the programmable gain amplifier is set to 0, with on the premise of manpower and materials cost is reduced, being capable of the interference that goes out in satellite-signal of automatic detection, and influence of such interference to positioning performance is eliminated by adjusting the yield value of programmable gain amplifier, so as to improve the anti-interference of satellite signal receiving apparatus and job stability.
Description
Technical field
The present invention relates to field of navigation technology, more particularly to a kind of satellite signal receiving apparatus and its satellite to reception to believe
Number method handled.
Background technology
Triones navigation system has been realized in being widely applied in consumer electronics product at present, in most of intelligent hand
Big Dipper positioning is supported in the electronic products such as machine, in-vehicle navigation apparatus, children's wrist-watch successively.But work as traditional Beidou receiver
During with other module cooperations, EMI (Electromagnetic Interference, electromagnetic interference) noise of other modules
Inevitably it is radiated on the antenna of Beidou receiver, and then enters inside Beidou receiver, the final Big Dipper that influences connects
The normal work of receipts machine.
As shown in figure 1, Beidou receiver include RF (Radio Frequency, radio frequency) front end, baseband circuit, antenna,
LNA (Low Noise Amplifier, low-noise amplifier) and Saw (Surface Acoustic Wave, sound surface filtering
Device).Wherein, RF front ends include VGA (Variable Gain Amplifier, variable gain amplifier), AGC (Automatic
Gain Control, automatic growth control), frequency mixer and ADC (Analog-to-Digital Converter, analog-to-digital conversion
Device), baseband circuit includes digital filter and BBP.
In specific application scenarios, the satellite-signal of antenna reception space, while most interference signal can also lead to
Antenna is crossed to be coupled in receiver.LNA is amplified to the satellite-signal that antenna receives, while introduces relatively low noise, by
It is wider in its bandwidth of operation, therefore effective satellite-signal and interference signal can be amplified simultaneously.Saw is to the satellite after LNA amplifications
Signal is filtered, and allows inband signaling by decaying to out of band signal.VGA coordinates AGC to use, and enters after being filtered to Saw
Satellite-signal to RF front ends is further amplified, so as to ensure that the signal intensity of its output meets that rear class ADC input is electric
It is flat to require, it is very big due to being input to the performance number excursion of satellite-signal (interference signal may also be included) of RF front ends,
So VGA has wider gain ranging, and its yield value can be automatically adjusted according to AGC feedback.AGC coordinates VGA to make
With making VGA yield value automatically be adjusted with signal intensity, AGC detections are amplified into ADC radio frequency by VGA
Signal, VGA is fed back to if signal is excessive makes it reduce yield value, and VGA is fed back to if signal is too weak makes it improve increasing
Benefit value, so as to ensure that the signal for being input to ADC reaches ADC fiduciary level requirement.Frequency mixer enters to the VGA radiofrequency signals exported
Row frequency-conversion processing, high-frequency signal is converted into intermediate-freuqncy signal.Reference oscillator is generally high-precision quartz clock, before for RF
Terminal circuit provides reference clock.ADC inputs the radiofrequency signal for reaching fiduciary level requirement, and radiofrequency signal is turned by analog signal
Data signal is changed to, exports I/Q signal (in-phase quadrature, inphase quadrature modulated signal), wherein, ADC output
Usually one group of I/Q signal.Digital filter isolates Big Dipper BPIQ signals (Baseband Processor from I/Q signal
IQ, the I/Q signal in BBP), GPS (Global Positioning System, global positioning system) BPIQ signals
Enter with GLONASS (Global Navigation Satellite System, GLONASS satellite navigation system) BPIQ signals
Enter in respective BBP.In BBP, effective BPIQ signals first pass around capture, obtain Doppler's frequency
The rough valuation of the parameters such as shifting, code phase, these rough valuations are then sent to track loop, signal carried out accurate continuous
Tracking, while output demodulates the satellite CN0 values (carrier over noise power spectral density ratio) come and necessary navigation data, finally
Extracted by ephemeris, satellite position calculation, pseudorange estimation, position resolve, obtain the location informations such as position, the speed of user.
From the point of view of Beidou receiver is to the handling process of satellite-signal, the signal quality of effective Big Dipper BPIQ signals will be straight
The capture and demodulation for having influence on BBP to satellite-signal are connect, so as to influence Big Dipper positioning performance.When not interfering with signal
When entering Beidou receiver, BBP can normally handle effective Big Dipper BPIQ signals.But enter in interference signal
Entering to after Beidou receiver, the VGA inside RF front ends can be together amplified to effective Big Dipper BPIQ signals and interference signal,
And because interference signal is relatively strong (generally all more many by force than Big Dipper BPIQ signals), in order to ensure that VGA power output meets ADC's
Input requirements, then own gain can be transferred to by AGC feedback function, VGA by very low level, although so overall signal
Level meets ADC input requirements, but the but wretched insufficiency of the amplification to effective Big Dipper BPIQ signals so that enters base
The amplitude of the Big Dipper BPIQ signals of provided with processor is very low, and further resulting in BBP can not be effectively to Big Dipper BPIQ signal
It is demodulated, the problems such as even can not successfully being positioned so as to cause positioning time deviation, location sensitivity to be deteriorated.
For problems, traditional solution is in product development stage, is received by testing other modules and the Big Dipper
Whether Beidou receiver can be interfered and judged during machine cooperation, by shielding, being grounded if interference is tested out
Weaken as far as possible Deng EMI Optimized Measures or eliminate interference, prevent it from entering inside Beidou receiver.But due to traditional
Performance change when solution will test Beidou receiver and other all module cooperations is, it is necessary to substantial amounts of human input
To be tested, the true usage scenario of complete analog subscriber is even so also impossible to, so can not comprehensively find to do
Disturb and whether there is.Even if it is found that interference is present, it is also desirable to take various EMI means and disturbed to eliminate, and different moulds
The EMI source head of block is simultaneously different, it is necessary to put into more research and development energy during EMI interference is eliminated, and final solution
Certainly measure such as increase shielding, increase ground connection etc. be also required to higher cost input.
As can be seen here, how on the premise of manpower and materials cost is reduced, Beidou receiver self-adapting detecting is enable to go out
Disturb and eliminate influence of the interference to Big Dipper positioning performance, turn into those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
The embodiment of the present application provides the side that a kind of satellite signal receiving apparatus and its satellite-signal to reception are handled
Method, on the premise of manpower and materials cost is reduced, can the interference signal that goes out in satellite-signal of automatic detection, and eliminate interference letter
Influence number to satellite signal receiving apparatus positioning performance, it is steady so as to improve the anti-interference of satellite signal receiving apparatus and work
It is qualitative.
In order to reach above-mentioned technical purpose, the application provides a kind of satellite signal receiving apparatus and the satellite-signal of reception is entered
The method of row processing；The satellite signal receiving apparatus includes radio-frequency front-end and baseband circuit, the satellite signal receiving apparatus
Also include being series at the programmable gain amplifier in radio-frequency front-end and baseband circuit between digital filter,
When the yield value of VGA in the radio-frequency front-end is less than preset gain, and the target that the digital filter filters out
When the IQ amplitudes of satellite-signal are less than default amplitude, the yield value of the programmable gain amplifier is adjusted, so that the IQ width
Value reaches the default amplitude；Otherwise, the yield value of the programmable gain amplifier is set to 0.
Preferably, the satellite-signal includes the signal in GNSS frequency ranges, and the target satellite signal is Big Dipper B1 frequency ranges
Signal, gps signal or GLONASS signal.
Accordingly, it is described present invention also provides a kind of satellite signal receiving apparatus, including radio-frequency front-end and baseband circuit
Satellite signal receiving apparatus also include gain adjustment module and be series in radio-frequency front-end and baseband circuit digital filter it
Between programmable gain amplifier,
The gain adjustment module is used for the VGA yield value in the radio-frequency front-end and is less than preset gain, and the number
When the IQ amplitudes for the target satellite signal that word filters filter goes out are less than default amplitude, the programmable gain amplifier is adjusted
Yield value, so that the IQ amplitudes reach the default amplitude；Otherwise, the yield value of the programmable gain amplifier is set to
0。
Preferably, the satellite-signal includes the signal in GNSS frequency ranges, and the target satellite signal is Big Dipper B1 frequency ranges
Signal, gps signal or GLONASS signal.
Accordingly, present invention also provides another satellite signal receiving apparatus, including radio-frequency front-end and baseband circuit, institute
Stating satellite signal receiving apparatus also includes being series at the programmable-gain in radio-frequency front-end and baseband circuit between digital filter
Amplifier, the I/Q signal corresponding with target satellite signal that the digital filter is used to will filter out feed back to described programmable
Gain amplifier；
The programmable gain amplifier is used for the VGA yield value in the radio-frequency front-end and is less than preset gain, and institute
When stating the amplitude of I/Q signal less than default amplitude, adjust gain value, so that the amplitude of the I/Q signal reaches the default amplitude；
Otherwise, yield value is set to 0.
Preferably, the satellite-signal includes the signal in GNSS frequency ranges, and the target satellite signal is Big Dipper B1 frequency ranges
Signal, gps signal or GLONASS signal.
Compared with prior art, the advantageous effects for the technical scheme that the embodiment of the present application is proposed include：
The embodiment of the present application discloses a kind of satellite signal receiving apparatus and its satellite-signal to reception handled
Method, when the yield value of VGA in radio-frequency front-end is less than preset gain, and the IQ of target satellite signal that digital filter filters out
When amplitude is less than default amplitude, judge to be mixed with interference signal in satellite-signal, and then adjust the gain of programmable gain amplifier
Value, the I/Q signal of radio-frequency front-end output is amplified, while interference signal is also exaggerated, but because base-band digital filters utensil
There is very high incoming level scope, even if interference signal by a certain degree of amplification, is not more than base-band digital wave filter institute
The incoming level scope that can be born, so that interference signal is all filtered out after base-band digital wave filter, and is filtered out
Target satellite signal IQ amplitudes meet subsequent demodulation handle necessary requirement, so as to eliminate shadow of the interference signal to positioning performance
Ring, improve the anti-interference and job stability of satellite signal receiving apparatus, and without additionally putting into manpower and materials into original
Test interference, different disposal is carried out without for disturbance.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, the required accompanying drawing used in being described below to embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of Beidou receiver of the prior art；
Fig. 2 is that a kind of satellite signal receiving apparatus proposed in the application preferred embodiment is carried out to the satellite-signal of reception
The schematic flow sheet of the method for processing；
Fig. 3 is a kind of structural representation of the satellite signal receiving apparatus proposed in the application preferred embodiment；
Fig. 4 is the structural representation of another satellite signal receiving apparatus proposed in the application preferred embodiment；
Fig. 5 is a kind of citizens' radio band distribution map of the satellite signal receiving apparatus proposed in the application preferred embodiment；
Fig. 6 is the S21 frequency curve charts of GNSS wave filters of the prior art.
Embodiment
The problem of in view of being previously mentioned in the application background technology, other modules are when with Beidou receiver cooperation pair
Interference caused by Beidou receiver is, it is necessary to put into substantial amounts of manpower and materials to be detected, and need to take various solutions
To eliminate interference.
The application proposes a kind of method that satellite signal receiving apparatus and its satellite-signal to reception are handled, and passes through
The IQ amplitudes for the target satellite signal that VGA yield value and digital filters filter go out are disturbed to detect in radio-frequency front-end, pass through
The yield value of programmable gain amplifier is adjusted to eliminate influence of the interference to positioning performance, so as to improve satellite signal receiving dress
The anti-interference and job stability put, and disturbed without additionally putting into manpower and materials to test, without for different dry
Disturb carry out different disposal.
The method that a kind of satellite signal receiving apparatus provided in an embodiment of the present invention is handled the satellite-signal of reception,
The satellite signal receiving apparatus includes radio-frequency front-end and baseband circuit, and the satellite signal receiving apparatus also includes being series at penetrating
PGA (programmable gain amplifier, programmable-gain in frequency front end and baseband circuit between digital filter
Amplifier).Methods described includes：When the yield value of VGA in the radio-frequency front-end is less than preset gain, and the digital filter
When the IQ amplitudes of the target satellite signal filtered out are less than default amplitude, the yield value of the PGA is adjusted, so that the IQ amplitudes
Reach the default amplitude；Otherwise, the yield value of the PGA is set to 0.
Wherein, the executive agent of the above method can be PGA, or BBP, can also be other chips.
The application is not restricted to this.
Alternatively, the satellite-signal including GNSS, (Global Navigation Satellite System, defend by the whole world
Star navigation system) signal in frequency range, the target satellite signal is Big Dipper B1 frequency band signals, gps signal or GLONASS letters
Number.
Wherein, when target satellite signal is gps signal, yield value and digital filter mistake to VGA in radio-frequency front-end
The IQ amplitudes of the gps signal filtered out are detected, if detecting, VGA yield value is less than preset gain, and digital filter mistake
The IQ amplitudes of the gps signal filtered out are less than the default amplitude of the I/Q signal corresponding to gps signal, then judge to be mixed with gps signal
Interference signal, according between the difference and the IQ amplitudes of gps signal and default amplitude between VGA yield value and preset gain
Difference adjust PGA yield value, and the I/Q signal exported according to the yield value of the PGA after adjustment to radio-frequency front-end is put
Greatly, the IQ amplitudes for the gps signal that digital filter filters out are made to reach default amplitude, required for meeting subsequent demodulation processing
Ask；If detecting, VGA yield value is more than or equal to preset gain, or the IQ amplitudes of gps signal that digital filter filters out
More than or equal to the default amplitude of the I/Q signal corresponding to gps signal, then judge do not have interference signal in gps signal, set
PGA yield value is 0, and the I/Q signal of radio-frequency front-end output is not processed.
When target satellite signal is Big Dipper B1 frequency band signals, to the yield value and digital filter of VGA in radio-frequency front-end
The IQ amplitudes of the Big Dipper B1 frequency band signals filtered out are detected, if detecting, VGA yield value is less than preset gain, and numeral
The IQ amplitudes for the Big Dipper B1 frequency band signals that filters filter goes out are less than the default width of the I/Q signal corresponding to Big Dipper B1 frequency band signals
Value, then judge to be mixed with interference signal in Big Dipper B1 frequency band signals, according to the difference between VGA yield value and preset gain and
Difference between the IQ amplitudes and default amplitude of Big Dipper B1 frequency band signals adjusts PGA yield value, and according to the PGA after adjustment
The I/Q signal that is exported to radio-frequency front-end of yield value be amplified, the IQ amplitudes of Big Dipper B1 frequency band signals is reached default amplitude,
To meet that subsequent demodulation handles necessary requirement；If detecting, VGA yield value is more than or equal to preset gain, or digital filter
The IQ amplitudes of the Big Dipper B1 frequency band signals filtered out are more than or equal to the default width of the I/Q signal corresponding to Big Dipper B1 frequency band signals
Value, then judge do not have interference signal in Big Dipper B1 frequency band signals, the yield value for setting PGA is 0, to the IQ of radio-frequency front-end output
Signal does not process.
When target satellite signal is GLONASS signal, yield value and digital filters filter to VGA in radio-frequency front-end
The IQ amplitudes of the GLONASS signal gone out are detected, if detecting, VGA yield value is less than preset gain, and digital filter
The IQ amplitudes of the GLONASS signal filtered out are less than the default amplitude of the I/Q signal corresponding to GLONASS signal, then judge
Interference signal is mixed with GLONASS signal, according to the difference and GLONASS signal between VGA yield value and preset gain
IQ amplitudes and default amplitude between difference adjust PGA yield value, and according to the yield value of the PGA after adjustment to radio frequency
The I/Q signal of front end output is amplified, and the IQ amplitudes of GLONASS signal is reached default amplitude, to meet that subsequent demodulation is handled
Necessary requirement；If detecting, VGA yield value is more than or equal to preset gain, or the GLONASS letters that digital filter filters out
Number IQ amplitudes be more than or equal to GLONASS signal corresponding to I/Q signal default amplitude, then judge GLONASS signal in not
With interference signal, the yield value for setting PGA is 0, and the I/Q signal of radio-frequency front-end output is not processed.
It is that a kind of satellite signal receiving apparatus provided in an embodiment of the present invention is carried out to the satellite-signal of reception referring to Fig. 2
The schematic flow sheet of the method for processing, including：
S1, by RF front ends by antenna receive and through LNA and Saw processing after satellite-signal be converted to I/Q signal；
S2, by PGA I/Q signal is transmitted to digital filter；
S3, filter out from I/Q signal by digital filter I/Q signal corresponding to target satellite signal；
The IQ for the target satellite signal that S4, the yield value of VGA in extraction RF front ends and the digital filter filter out
Amplitude；
S5, judge whether VGA yield value is less than preset gain, and whether the IQ amplitudes of target satellite signal are less than default
Amplitude；If so, step S6 is then performed, if it is not, then performing step S7；
S6, the yield value for adjusting PGA, so that the IQ amplitudes reach the default amplitude；
S7, PGA yield value is set to 0.
The scheme that the embodiment of the present application is proposed, when the yield value of VGA in radio-frequency front-end is less than preset gain, and numeral filter
When the IQ amplitudes for the target satellite signal that ripple device filters out are less than default amplitude, judge to be mixed with interference signal in satellite-signal, enter
And PGA yield value is adjusted, the I/Q signal of radio-frequency front-end output is amplified, while interference signal is also exaggerated, but due to
Base-band digital wave filter has very high incoming level scope, even if interference signal by a certain degree of amplification, is not more than
The incoming level scope that base-band digital wave filter can bear, so that interference signal is complete after base-band digital wave filter
Portion filters out, and the IQ amplitudes for the target satellite signal that base-band digital filters filter goes out meet that subsequent demodulation handles necessary requirement,
So as to eliminate influence of the interference to positioning performance, the anti-interference and job stability of satellite signal receiving apparatus are improved, and
Without additionally putting into manpower and materials into original test interference, different disposal is carried out without for disturbance.
It should be noted that described embodiment is the part of the embodiment of the application, rather than whole embodiments.
Based on the embodiment in the application, institute that those of ordinary skill in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of the application protection.
For be illustrated more clearly that the application previous embodiment provide scheme, based on above-mentioned satellite signal receiving apparatus pair
The same inventive concept of method that the satellite-signal of reception is handled, the embodiment of the present application also proposed a kind of satellite-signal and connect
Receiving apparatus.In a kind of optional embodiment, satellite signal receiving apparatus is Beidou receiver.
It is a kind of structural representation of satellite signal receiving apparatus provided in an embodiment of the present invention referring to Fig. 3, including before RF
End, PGA, baseband circuit, antenna, LNA and Saw.Wherein, the baseband circuit includes digital filter and BBP,
The RF front ends include VGA, AGC, frequency mixer and ADC, and the satellite signal receiving apparatus also includes reference oscillator.PGA goes here and there
It is associated between the digital filter in RF front ends and baseband circuit.
Wherein, the RF front ends be used for by the antenna receive and through the LNA and the Saw processing after satellite-signal
Be converted to the I/Q signal exported to the PGA.The digital filter is used to filter out target satellite letter from the I/Q signal
I/Q signal (such as Big Dipper BPIQ signals) corresponding to number.The PGA is used to be less than default increase in the yield value for detecting VGA
Benefit, and when the IQ amplitudes of target satellite signal are less than default amplitude, the yield value of the PGA is adjusted, so that the number
The IQ amplitudes for the target satellite signal that word filters filter goes out reach default amplitude.
In the present embodiment, by PGA to the target satellite signal that is filtered out in VGA yield value and digital filter
IQ amplitudes are detected, if detecting, VGA yield value is more than or equal to preset gain, or the IQ amplitudes of target satellite signal are big
In or equal to default amplitude, then judge do not have interference signal in target satellite signal, the yield value for giving tacit consent to PGA is 0, before RF
The I/Q signal of end output does not process；If detecting, VGA yield value is less than preset gain, and filtered out in digital filter
The IQ amplitudes of target satellite signal are less than default amplitude, then judge there is interference signal in target satellite signal, according to VGA increasing
The difference between difference and the IQ amplitudes of target satellite signal and default amplitude between beneficial value and preset gain adjusts PGA
Yield value, and the I/Q signal exported according to the yield value of the PGA after adjustment to RF front ends is amplified, so that digital filter
Filtering interference signals, while the IQ amplitudes of the target satellite signal filtered out reach default amplitude, so as to realize to interference signal
Effective detection, and after interference is detected, the yield value by adjusting PGA realizes the I/Q signal exported to RF front ends again
Amplification, eliminate influence of the interference signal to satellite signal receiving apparatus.Wherein, the satellite-signal includes the letter in GNSS frequency ranges
Number, the target satellite signal is Big Dipper B1 frequency band signals, gps signal or GLONASS signal.As shown in Fig. 2 digital filter
Filter out the Big Dipper BPIQ signals for meeting BBP requirement, GPS BPIQ signals and GLO BPIQ signals, BBP
Location information is obtained by demodulating these signals, so as to ensure satellite signal receiving apparatus normal work.
The scheme that the embodiment of the present application is proposed, by PGA to the mesh that is filtered out in VGA yield value and digital filter
The IQ amplitudes of mark satellite-signal are detected, and to judge whether to be mixed with interference signal in satellite-signal, and are judging to be mixed with interference
After signal, the I/Q signal that RF front ends export is amplified again by the yield value for adjusting PGA, eliminates interference signal to satellite
The influence of signal receiving device, so as to improve the anti-interference of satellite signal receiving apparatus and job stability, and without volume
Outer input manpower and materials carry out different disposal into original test interference without for disturbance.
It should be noted that described embodiment is the part of the embodiment of the application, rather than whole embodiments.
Based on the embodiment in the application, institute that those of ordinary skill in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of the application protection.
Below in conjunction with the accompanying drawing in the application, clear, complete description is carried out to the technical scheme in the application, is shown
So, described embodiment is the part of the embodiment of the application, rather than whole embodiments.Based on the implementation in the application
Example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all belongs to
In the scope of the application protection.
As shown in figure 4, it is the structural representation of another satellite signal receiving apparatus proposed in the application preferred embodiment
Figure, the satellite signal receiving apparatus is by gain adjustment module and is series at digital filter in radio-frequency front-end and baseband circuit
Between PGA, realize the detection of the interference signal to approaching target satellite-signal wave band, and after interference signal is detected, adjust
Whole PGA yield value, eliminate the interference signal of approaching target satellite-signal wave band.
In a kind of optional embodiment, the function of gain adjustment module is realized by BBP.
It should be noted that in order to realize the commercial applications of triones navigation system, government actively encourages Big Dipper chip
Development, current domestic many chip manufacturers have developed Beidou II passive location navigation chip successively.And due to north
Bucket satellite navigation system can only cover the Asian-Pacific area at present, almost all of in order to realize the broader applications of navigation chip
Big Dipper positioning chip is also compatible with devising the satellite navigation system that has been realized in Global coverage greatly to GPS and GLONASS two
Signal receives.This requires satellite signal receiving apparatus to have wider bandwidth, and the bandwidth of satellite signal receiving apparatus is wider,
More interference signals are also had while effective satellite-signal is received therewith to enter.
In satellite signal receiving apparatus received signal, effective frequency range of Big Dipper B1 wave bands is：1559~
1563MHz, GPS effective frequency range is：1574.4~1576.4MHz, GLONASS effective frequency range is：1597~1606MHz,
As shown in Figure 5.Wherein, Big Dipper B1 distances GPS has 11MHz frequency range, and distance GLONASS has 38MHz.It is compatible in current tradition
Support BDS (Compass Navigation Satellite System, Beidou satellite navigation system), GPS and GLONASS
In satellite signal receiving apparatus, BDS, GPS and GLONASS share same radio frequency path and same bandpass filter, therefore
Can be lossless from the signal in the range of 1559MHz to the GPS of Big Dipper 1576.4MHz (or 1606MHz to GLONASS)
Enter in satellite signal receiving apparatus, include effective target satellite signal, i.e. Big Dipper B1 frequency band signals, GPS among these
Signal, GLONASS signal, also include the interference signal of approaching target satellite-signal wave band.It is typical GNSS filters referring to Fig. 6
The S21 frequency curve charts of ripple device, it can be seen that while BDS signals, gps signal and GLONASS signal enter chip, just
Falling the interference signal between BDS and GPS frequency or between GPS and GLONASS frequencies loss-free can enter satellite
Inside reception device.Because such interference is interior in GNSS bands but not in the effective band in BDS, GPS or GLONASS, therefore
It is referred to as to close on the out-of-band interference of B1 frequency ranges.Due to closing on effective frequency of the out-of-band interference very close to Big Dipper B1 of Big Dipper B1 wave bands
Section, therefore be difficult to be eliminated by way of radio circuit filtering, cause its it is lossless enter in satellite signal receiving apparatus,
Similarly, the out-of-band interference for closing on other echo signal wave bands also can be lossless enter satellite signal receiving apparatus.
In order to ensure the ADC normal works in satellite signal receiving apparatus and adapt to changeable satellite environment, ADC is set
There is very wide gain ranging, such as the VGA gain scope of high pass GNSS chip internals is -11~+17dB.In addition, in order to ensure
BBP in satellite signal receiving apparatus can normally demodulate effective target satellite signal, be input to baseband circuit
The IQ amplitudes of target satellite signal will also meet certain scope, and the evil of positioning performance can be caused if super go beyond the scope
Change.It is some and the out-of-band interference of approaching target satellite-signal can cause VGA gain value and the IQ amplitudes of target satellite signal to reduce
Disturb too by force, then VGA gain value and the IQ amplitudes of target satellite signal can be caused to be less than reasonable value range, so as to influence Base-Band Processing
Detection and demodulation of the device to target satellite signal, so as to cause the positioning performance of satellite signal receiving apparatus to deteriorate.Therefore, it is necessary to
Whether effective detection goes out to have the out-of-band interference of approaching target satellite-signal wave band to enter satellite signal receiving apparatus, and once sentences
The disconnected out-of-band interference for having approaching target satellite-signal wave band, which enters then to need to eliminate this interference, determines satellite signal receiving apparatus
The influence of position performance.
In the present embodiment, gain adjustment module VGA in RF front ends are detected yield value is less than preset gain, and number
When the IQ amplitudes for the target satellite signal that word filters filter goes out are less than default amplitude, PGA yield value is adjusted, so that the IQ
Amplitude reaches default amplitude；Otherwise, PGA yield value is set to 0.
Specifically, first testing the satellite signal receiving apparatus not interfered with, obtain pre- in the case of not interfering with
If the default amplitude of the I/Q signal corresponding to gain and target satellite signal.For example, when target satellite signal is Big Dipper B1 frequency ranges
During signal, the default amplitude of the I/Q signal corresponding to VGA preset gain and Big Dipper B1 frequency band signals is obtained, can by calculating
Know, the signal launched positioned at the big-dipper satellite of earth middle orbit plane after Atmospheric attenuation by reaching the strong of earth surface
Spend for -130dBm or so, it is contemplated that the antenna gain (may be postiive gain in a certain direction) of satellite signal receiving apparatus and
The signal handling capacity of baseband chip, can extrapolate satellite-signal scope that satellite signal receiving apparatus receives for-
160dBm~-120dBm.In the environment in the absence of any interference, PGA default gain value is set as 0.In testing, pass through
- 160~-120dBm satellite-signal is inputted to satellite signal receiving apparatus, and records the gain of the VGA under each power level
Value and the IQ amplitudes of Big Dipper B1 frequency band signals are to do statistical analysis, so as to draw VGA preset gain and Big Dipper B1 frequency band signals
The default amplitude of corresponding I/Q signal.Wherein, the test data of satellite signal receiving apparatus is as shown in table 1.
Table 1
Wherein, CN0 is carrier over noise power spectral density ratio, is commonly used to gauge signal intensity or defines GNSS receiver
Sensitivity.As can be known from the table data, during satellite signal receiving apparatus inputs -160~-120dBm satellite-signals, VGA
Yield value is held essentially constant, and the IQ amplitudes of Big Dipper B1 frequency band signals slightly reduce with the reduction of satellite-signal, but work as and defend
After star signal is reduced to certain level, the IQ amplitudes of Big Dipper B1 frequency band signals tend towards stability.According to the test result, in conjunction with base
Provided with processor can then obtain VGA preset gain and Big Dipper B1 frequency band signals institute to the detectability of Big Dipper B1 frequency band signals
The default amplitude of corresponding I/Q signal, and be stored in gain adjustment module.
In the real work scene of satellite signal receiving apparatus, VGA in gain adjustment module extract real-time RF front ends
The IQ amplitudes for the target satellite signal that yield value and digital filters filter go out, and by the yield value and preset gain of the VGA
It is compared, by the IQ amplitudes of the target satellite signal compared with default amplitude, to determine whether that approaching target is defended
The out-of-band interference of star signal enters satellite signal receiving apparatus.If the yield value of the VGA is more than or equal to preset gain or institute
The IQ amplitudes for stating target satellite signal are more than or equal to default amplitude, then judge that the out-of-band interference without approaching target satellite-signal is entered
Enter satellite signal receiving apparatus；If the VGA gain value is less than preset gain and the IQ amplitudes of the target satellite signal are less than
Default amplitude, the then out-of-band interference for being determined with approaching target satellite-signal enter satellite signal receiving apparatus.
When not detecting the interference signal of approaching target satellite-signal, acquiescence PGA yield values are 0, i.e., will not be to ADC
The I/Q signal of output carries out any enhanced processing.When being tested with the out-of-band interference of approaching target satellite-signal, gain-adjusted
Module is according to the difference between current VGA gain value and preset gain and the IQ amplitudes of target satellite signal and default amplitude
Between difference carry out adjust automatically PGA yield value, the IQ for making PGA further be exported according to the PGA yield values after adjustment to ADC
Signal is amplified, while interference signal is also exaggerated, but because digital filter has very high incoming level scope, even if
Interference signal is not more than the incoming level scope that digital filter can bear by a certain degree of amplification.Therefore, quilt is worked as
After digital filter, the interference signal outside band can be filtered out all the I/Q signal of amplification, only remaining to be amplified to default width
I/Q signal corresponding to the target satellite signal of value enters BBP, so as to realize BBP to satellite-signal
Correct demodulation.
In specific application scenarios, such as smart mobile phone can start Big Dipper positioning work(when opening camera and being shot
Energy (positional information of recording photograph), now, target satellite signal is Big Dipper B1 band signals.And because the MCLK of camera is
23.88MHz, its 66 frequency multiplication are 1576.08MHz, apart from Big Dipper B1 wave bands (1559~1563MHz) 13MHz and are placed exactly in GPS
In frequency range, therefore the interference signal of camera zero-decrement can be entered inside satellite receiver.As shown in table 2, it is assumed that certain
The VGA of satellite receiver preset gain is 0, and the default amplitude of the I/Q signal corresponding to Big Dipper B1 frequency band signals is 200.
Table 2
When camera does not work, the VGA gain value that gain adjustment module detects is 2dB, higher than preset gain, the Big Dipper
The IQ amplitudes of B1 frequency band signals are 300, higher than default amplitude, then judge that state no interference signal enters satellite receiver, PGA increasing
Beneficial value will not be adjusted, i.e. PGA uses the gain given tacit consent to (default gain value is arranged to 0dB).Taken pictures when opening camera
When, due to very strong interference at 1576.08MHz be present, cause VGA yield value to be reduced to -8dB from 2dB, less than default increasing
Benefit, and the decline of VGA gain value causes effective Big Dipper B1 frequency band signals amplification deficiency, makes the IQ amplitudes of Big Dipper B1 frequency band signals
100 are reduced to from 300, less than default amplitude, now gain adjustment module is determined with interference signal and enters satellite receiver, and
PGA yield value is brought up into 10dB from 0dB simultaneously, the PGA of raising gain is put the I/Q signal that ADC is exported again
Greatly, so as to ensureing that the IQ amplitudes of the Big Dipper B1 frequency band signals after digital filter reach default amplitude, i.e. Big Dipper B1 frequency ranges
The IQ amplitudes of signal bring up to 300 from 100 before adjustment, are disturbed also not accordingly even when existing when being taken pictures using camera
The normal positioning performance of satellite signal receiving apparatus can be influenceed.
The scheme that the embodiment of the present application is proposed, when the yield value of VGA in radio-frequency front-end is less than preset gain, and numeral filter
When the IQ amplitudes for the target satellite signal that ripple device filters out are less than default amplitude, judge to be mixed with interference signal in satellite-signal, enter
And PGA yield value is adjusted, the IQ amplitudes of target satellite signal are amplified, after meeting the IQ amplitudes of target satellite signal
Continuous demodulation process necessary requirement, so as to eliminate influence of the interference to positioning performance, improve the anti-interference of satellite signal receiving apparatus
Property and job stability, and without additionally putting into manpower and materials into original test interference, be carried out without for disturbance
Different disposal.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can lead to
Hardware realization is crossed, the mode of necessary general hardware platform can also be added by software to realize.Based on such understanding, this hair
Bright technical scheme can be embodied in the form of software product, and the software product can be stored in a non-volatile memories
In medium (can be CD-ROM, USB flash disk, mobile hard disk etc.), including some instructions are causing a computer equipment (can be
Personal computer, server, or network equipment etc.) perform method described in each implement scene of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, does not represent the quality of implement scene.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into protection scope of the present invention.
Claims (6)
1. a kind of method that satellite signal receiving apparatus is handled the satellite-signal of reception, the satellite signal receiving apparatus
Including radio-frequency front-end and baseband circuit, it is characterised in that the satellite signal receiving apparatus also include be series at radio-frequency front-end and
Programmable gain amplifier in baseband circuit between digital filter,
When the yield value of VGA in the radio-frequency front-end is less than preset gain, and the target satellite that the digital filter filters out
When the IQ amplitudes of signal are less than default amplitude, the yield value of the programmable gain amplifier is adjusted, so that the IQ amplitudes reach
To the default amplitude；Otherwise, the yield value of the programmable gain amplifier is set to 0.
2. the method as described in claim 1, it is characterised in that the satellite-signal includes the signal in GNSS frequency ranges, described
Target satellite signal is Big Dipper B1 frequency band signals, gps signal or GLONASS signal.
3. a kind of satellite signal receiving apparatus, including radio-frequency front-end and baseband circuit, it is characterised in that the satellite signal receiving
Device also includes gain adjustment module and the programmable increasing being series in radio-frequency front-end and baseband circuit between digital filter
Beneficial amplifier,
The gain adjustment module is used for the VGA yield value in the radio-frequency front-end and is less than preset gain, and the numeral filter
When the IQ amplitudes for the target satellite signal that ripple device filters out are less than default amplitude, the gain of the programmable gain amplifier is adjusted
Value, so that the IQ amplitudes reach the default amplitude；Otherwise, the yield value of the programmable gain amplifier is set to 0.
4. satellite signal receiving apparatus as claimed in claim 3, it is characterised in that the satellite-signal is included in GNSS frequency ranges
Signal, the target satellite signal is Big Dipper B1 frequency band signals, gps signal or GLONASS signal.
5. a kind of satellite signal receiving apparatus, including radio-frequency front-end and baseband circuit, it is characterised in that the satellite signal receiving
Device also includes being series at the programmable gain amplifier in radio-frequency front-end and baseband circuit between digital filter, the numeral
The I/Q signal corresponding with target satellite signal that wave filter is used to will filter out feeds back to the programmable gain amplifier；
The programmable gain amplifier is used for the VGA yield value in the radio-frequency front-end and is less than preset gain, and the IQ
When the amplitude of signal is less than default amplitude, adjust gain value, so that the amplitude of the I/Q signal reaches the default amplitude；It is no
Then, yield value is set to 0.
6. satellite signal receiving apparatus as claimed in claim 5, it is characterised in that the satellite-signal is included in GNSS frequency ranges
Signal, the target satellite signal is Big Dipper B1 frequency band signals, gps signal or GLONASS signal.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824507A (en) * | 2019-11-27 | 2020-02-21 | 中国科学院微小卫星创新研究院 | Simulator of upper note receiving processor of navigation satellite |
| CN110971251A (en) * | 2019-12-25 | 2020-04-07 | 中电科航空电子有限公司 | Airborne electromagnetic wave equipment, anti-interference system, method and device |
| CN111366949A (en) * | 2019-12-16 | 2020-07-03 | 广东小天才科技有限公司 | Positioning method and system based on enhanced GNSS signal and smart watch |
| CN111399001A (en) * | 2020-03-31 | 2020-07-10 | 和芯星通科技(北京)有限公司 | Method and device for processing broadband interference |
| CN112436859A (en) * | 2020-11-11 | 2021-03-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN113839635A (en) * | 2021-09-29 | 2021-12-24 | 四川安迪科技实业有限公司 | Anti-interference self-adaptive AGC (automatic gain control) adjusting method and device based on smooth filtering |
| CN116094593A (en) * | 2023-04-12 | 2023-05-09 | 山东新科凯邦通信器材有限公司 | Signal detection method based on optical fiber communication |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055309A (en) * | 2007-05-25 | 2007-10-17 | 北京东方联星科技有限公司 | Configurable general radio frequency processing method and system of navigation satellite signal |
| US20080242249A1 (en) * | 2007-03-30 | 2008-10-02 | Broadcom Corporation | Three stage algorithm for automatic gain control in a receiver system |
| CN101281245A (en) * | 2008-05-27 | 2008-10-08 | 北京大学 | Method and apparatus for receiving army and civil dual-purpose global satellite navigation system multi-module radio frequency |
| CN102231636A (en) * | 2011-06-21 | 2011-11-02 | 清华大学 | Radio frequency front end device of receiver and signal receiving method thereof |
| CN102590828A (en) * | 2012-02-15 | 2012-07-18 | 北京中科贝银科技有限公司 | Method for reducing quantized noise of ADC (analog to digital converter) in satellite navigation receiver |
| CN103262426A (en) * | 2010-12-07 | 2013-08-21 | 马维尔国际贸易有限公司 | Rf peak detection scheme using baseband circuits |
-
2017
- 2017-05-23 CN CN201710369505.9A patent/CN107390236B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080242249A1 (en) * | 2007-03-30 | 2008-10-02 | Broadcom Corporation | Three stage algorithm for automatic gain control in a receiver system |
| CN101055309A (en) * | 2007-05-25 | 2007-10-17 | 北京东方联星科技有限公司 | Configurable general radio frequency processing method and system of navigation satellite signal |
| CN101281245A (en) * | 2008-05-27 | 2008-10-08 | 北京大学 | Method and apparatus for receiving army and civil dual-purpose global satellite navigation system multi-module radio frequency |
| CN103262426A (en) * | 2010-12-07 | 2013-08-21 | 马维尔国际贸易有限公司 | Rf peak detection scheme using baseband circuits |
| CN102231636A (en) * | 2011-06-21 | 2011-11-02 | 清华大学 | Radio frequency front end device of receiver and signal receiving method thereof |
| CN102590828A (en) * | 2012-02-15 | 2012-07-18 | 北京中科贝银科技有限公司 | Method for reducing quantized noise of ADC (analog to digital converter) in satellite navigation receiver |
Non-Patent Citations (1)
| Title |
|---|
| 李棚 等: "用于导航接收机的高线性度可编程增益放大器" * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824507A (en) * | 2019-11-27 | 2020-02-21 | 中国科学院微小卫星创新研究院 | Simulator of upper note receiving processor of navigation satellite |
| CN111366949A (en) * | 2019-12-16 | 2020-07-03 | 广东小天才科技有限公司 | Positioning method and system based on enhanced GNSS signal and smart watch |
| CN111366949B (en) * | 2019-12-16 | 2022-05-27 | 广东小天才科技有限公司 | Positioning method and system based on enhanced GNSS signal and smart watch |
| CN110971251A (en) * | 2019-12-25 | 2020-04-07 | 中电科航空电子有限公司 | Airborne electromagnetic wave equipment, anti-interference system, method and device |
| CN111399001A (en) * | 2020-03-31 | 2020-07-10 | 和芯星通科技(北京)有限公司 | Method and device for processing broadband interference |
| CN112436859A (en) * | 2020-11-11 | 2021-03-02 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN113839635A (en) * | 2021-09-29 | 2021-12-24 | 四川安迪科技实业有限公司 | Anti-interference self-adaptive AGC (automatic gain control) adjusting method and device based on smooth filtering |
| CN113839635B (en) * | 2021-09-29 | 2023-06-20 | 四川安迪科技实业有限公司 | Anti-interference self-adaptive AGC (automatic gain control) adjusting method and device based on smooth filtering |
| CN116094593A (en) * | 2023-04-12 | 2023-05-09 | 山东新科凯邦通信器材有限公司 | Signal detection method based on optical fiber communication |
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