CN108519608A - A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method - Google Patents
A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method Download PDFInfo
- Publication number
- CN108519608A CN108519608A CN201810194682.2A CN201810194682A CN108519608A CN 108519608 A CN108519608 A CN 108519608A CN 201810194682 A CN201810194682 A CN 201810194682A CN 108519608 A CN108519608 A CN 108519608A
- Authority
- CN
- China
- Prior art keywords
- signal
- satellite navigation
- array antenna
- interference
- bay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- 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
-
- 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
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/37—Hardware or software details of the signal processing chain
Abstract
The present invention principally falls into technical field of satellite navigation, and in particular to a method of based on array antenna realize satellite navigation it is anti-interference and survey appearance.The method for surveying appearance includes the following steps：Satellite navigation array antenna is set, for receiving satellite navigation radio-frequency signal；Each bay corresponding radio-frequency front-end channel, the radio-frequency front-end channel all the way in the satellite navigation array antenna handle the radiofrequency signal that bay receives, and generate digital baseband signal；Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes, to wave beam null is formed, to eliminate interference in interference；The satellite navigation signals carrier phase that each bay receives is recovered, the posture of appearance model computing array antenna is surveyed using array antenna.The method of the invention carries out anti-interference process to the signal received using array antenna and surveys appearance operation, realizes that appearance function is surveyed in satellite navigation under interference environment.
Description
Technical field
The present invention principally falls into technical field of satellite navigation, and in particular to one kind realizing that satellite navigation is anti-based on array antenna
Interference and the method for surveying appearance.
Background technology
Global Satellite Navigation System (GNSS) includes mainly the GPS system in the U.S., the GLONASS systems of Russia, Europe
Galileo systems, China Beidou satellite navigation system (BDS).Wherein, the Beidou satellite navigation system in China has been completed
The construction of No. two Big Dipper No.1, Big Dipper systems, for China periphery and the Asian-Pacific area provides the urban satellite navigation service, the Big Dipper three
System is being built, and is expected to provide service signal in the year two thousand twenty or so for Global Subscriber.Since navigation satellite is apart from the earth
Very remote and satellite launch power limited so that navigation signal reaches very faint when ground.Satellite navigation reception is set
It is standby to be highly prone to various electromagnetic interferences, cause receiving device can not work normally, cannot achieve normal location navigation, posture is surveyed
Measure function.
The attitude measurement of aircraft is significant in aerospace, and is widely used.Based on Global Satellite Navigation System
The attitude measurement pattern of foundation surveys appearance pattern compared to traditional inertia, and because of its precision height, initialization time is short, stability height etc.
Advantage is widely used in all kinds of aircraft, on ship naval vessels.But the load that appearance precision depends on navigation signal is surveyed in satellite navigation
Wave phase measures, and receiver will be unable to work normally after being interfered, and causes to survey the failure of appearance algorithm.
The present invention receives satellite navigation signals by array of designs antenna, and the signal to receiving carries out at radio-frequency front-end
Reason, adaptive array signal processing, array antenna carrier phase difference survey the processes such as appearance processing, realize defending under interference environment
Star navigator fix surveys appearance function.
Invention content
In view of the above technical problems, the present invention provide a kind of satellite navigation based on array antenna it is anti-interference and survey appearance side
Method realizes that satellite navigation is anti-interference and attitude measurement by array of designs antenna and adaptive anti-jamming processing.
The present invention is achieved by the following technical solutions：
A kind of satellite navigation anti-interference method based on array antenna, the described method comprises the following steps：
Satellite navigation array antenna is set, for receiving satellite navigation radio-frequency signal；
The corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, the radio frequency
Front passage handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes to formation in interference
Wave beam null eliminates interference, obtains glitch-free satellite navigation signals.
Further, the satellite navigation array antenna includes 4 bays or 7 bays；
When including 4 bays, centered on one of bay, other three antennas are evenly distributed in
Around center antenna array element and equilateral triangle is constituted, three bays of surrounding are half at a distance from center antenna array element
Carrier phase wavelength；
When including 7 bays, centered on one of bay, other six antennas are evenly distributed in
Around center antenna array element and regular hexagon is constituted, six bays of surrounding are half at a distance from center antenna array element
The length of side of carrier wavelength, regular hexagon is also half of carrier phase wavelength.
Further, the bay receives the navigation radiofrequency signal that GNSS satellite is emitted, the navigation radiofrequency signal
It is supplied to and connects after the electromagnetic wave signal is transformed into voltage signal or current signal by the bay for electromagnetic wave signal
The radio-frequency front-end of receipts machine.
Further, per the radio-frequency front-end channel described all the way include the first bandpass filter, the first low noise amplifier, mixing
Device, the second low noise amplifier, the second bandpass filter, A/D converter, AGC Control and channel calibration module；
The radio-frequency front-end is used to be converted into including GNSS signal and frequency by the navigation radiofrequency signal that bay exports
The lower digital baseband signal of rate, and be filtered, amplify in the process, gain control, channel calibration；
The bay, first bandpass filter, first low noise amplifier, the frequency mixer, described
Two band-pass filter, second low noise amplifier, the A/D converter and the channel calibration module are sequentially connected；It is local
Oscillator is connect with the frequency mixer；One end of the AGC Control is connect with the A/D converter, the other end and described the
Two low noise amplifiers connect；
First bandpass filter is used to filter out various interference and the noise except GNSS signal wave band, is filtered
Wave simulation signal；
First low noise amplifier is used to carry out power to the filtered analog signals that first bandpass filter exports
Amplification obtains radio frequency amplified signal；
The frequency mixer is used to the radio frequency amplified signal and the local oscillation signal that the local oscillator generates carrying out phase
Multiply, exports mixed frequency signal；
Second bandpass filter is used to filter out the high frequency section in the mixed frequency signal, output analog intermediate frequency letter
Number；
Second low noise amplifier is used to carry out the analog if signal that second bandpass filter exports
Power amplification obtains analog intermediate frequency amplified signal；
The A/D converter is used to the analog intermediate frequency amplified signal being converted to digital medium-frequency signal, and by the number
Word intermediate-freuqncy signal gives the AGC Control and the channel calibration module respectively；
The AGC Control is used to adjust the gain of second low noise amplifier, and the input of the A/D converter is made to believe
Number amplitude maintains a constant；
The channel calibration module exports digital baseband signal for being corrected to Ro-vibrational population.
Further, the way of the digital baseband signal obtained, it is identical as the number of bay in array antenna, i.e., pair
In the array antenna that array element number is M, m railway digital baseband signal can be obtained in total.
Further, the anti-interference process module carries out adaptive array signal processing to the digital baseband signal,
Specially：
Phase weighting control is carried out to each bay and changes array antenna beam direction, to suppress elimination interference signal；
Under the premise of ensureing that the amplitude per railway digital baseband signal is equal, by adjusting the phase shift weights per road array element signal,
Every road array element signal weighting summation is synthesized into composite signal total all the way, obtaining glitch-free satellite with elimination interference leads
Navigate signal.
Further, the composite signal is：
Y (n)=w1(n)x1(n)+w2(n)x2(n)+...wM-1(n)xM-1(n)+xM(n)；
Wherein, x1(n),x2(n),x3(n),...,xM(n) it is the digital baseband signal on the roads 1~M, xj(n) antenna is indicated
Array element j indicates that M array element signals weight phase by phase shift in the digital baseband intermediate-freuqncy signal of moment n, j=1,2 ..., M, y (n)
The composite signal added；
Choose the intermediate-freuqncy signal of the digital baseband all the way x of the center array element positioned at antenna array centreM(n) as with reference to letter
Number, and to other M-1 railway digital baseband intermediate frequency signals x1(n),x2(n),...,xM-1(n) phase shift processing is carried out, from the 1st road to the
The digital medium-frequency signal phase shift weights on the roads M-1 are respectively w1(n),w2(n),...,wM-1(n)。
Further, wi(n) it is the intermediate-freuqncy signal phase shift value or intermediate-freuqncy signal weights on the i-th tunnel, since amplitude remains unchanged,
Only change phase, therefore phase shift value is identical with weights, wherein i=1,2 ..., M-1；Defining weight coefficient vector W is
W=[w1(n),w2(n),...,wM-1(n),1]T
It is necessary to meet following condition by weight coefficient vector W：
In formula, PminIndicate that the minimum power of composite signal, y (n) indicate composite signal.
A method of the elimination satellite navigation based on array antenna is interfered surveys appearance to realize, array day is based on using described
The satellite navigation anti-interference method of line, the method includes：
The satellite navigation array antenna is set on carrier, receives satellite navigation radio-frequency signal；
The corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, the radio frequency
Front passage handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes to formation in interference
Wave beam null eliminates interference, obtains glitch-free satellite navigation signals；
After recovering the satellite navigation signals carrier phase that each bay receives, appearance model is surveyed using array antenna
The ambiguity of carrier phase between bay is calculated, solves the posture of array antenna, and then calculate the carrier
Posture.
The advantageous effects of the present invention：
Satellite navigation anti-interference method provided by the invention based on array antenna, uses array antenna received satellite navigation
Signal, and antenna beam is controlled by the method for phase weighting and is directed toward, inhibit to eliminate interference signal, realize under interference environment
Satellite navigation and positioning speed measuring function.
The anti-interference survey attitude positioning method of satellite navigation provided by the invention based on array antenna, in adaptive anti-jamming processing
Afterwards, interference signal is eliminated, the carrier phase value of every road array element signals is recovered, passes through carrier phase difference computing array antenna
The satellite navigation attitude measurement under interference environment may be implemented in posture.
Description of the drawings
Fig. 1 is that the satellite navigation based on array antenna is anti-interference in the embodiment of the present invention 1 and surveys attitude positioning method schematic diagram；
Fig. 2 is in the embodiment of the present invention 1 when including 4 bays, and 4 bays are structured the formation schematic diagram；
Fig. 3 is in the embodiment of the present invention 1 when including 7 bays, and 7 bays are structured the formation schematic diagram；
Fig. 4 is radio-frequency front-end access diagram in the embodiment of the present invention 1.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is explained in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, and
It is not used in the restriction present invention.
On the contrary, the present invention covers any replacement done in the spirit and scope of the present invention being defined by the claims, repaiies
Change, equivalent method and scheme.Further, in order to make the public have a better understanding the present invention, below to the thin of the present invention
It is detailed to describe some specific detail sections in section description.Part without these details for a person skilled in the art
Description can also understand the present invention completely.
Embodiment 1
The present embodiment provides a kind of satellite navigation anti-interference method based on array antenna, the method includes following steps
Suddenly：
1) satellite navigation array antenna is set, for receiving satellite navigation radio-frequency signal；
The satellite navigation array antenna is the antenna array arranged by the specifically mode of structuring the formation by M bay, is used
In reception satellite navigation radio-frequency signal.In the present embodiment, M=4 or M=7, each bay can receive GPS L1,
The satellite navigation signals of the frequency points such as BDS B1, BDS B3.
As shown in Fig. 2, when the satellite navigation array antenna includes 4 bays, by the 4 bay cloth
Battle array is Y types, i.e., centered on one of bay, other three antennas are evenly distributed in around center antenna array element
And equilateral triangle is constituted, three bays of surrounding are half of carrier phase wavelength at a distance from center antenna array element, and λ is indicated
Satellite navigation signals carrier phase wavelength；
As shown in figure 3, when the satellite navigation array antenna includes 7 bays, by the 7 bay cloth
Battle array is the regular hexagon containing a center array element, i.e., centered on one of bay, other six antennas uniformly divide
Cloth is around center antenna array element and constitutes regular hexagon, and six bays of surrounding are at a distance from center antenna array element
Half of carrier wavelength, the i.e. length of side of regular hexagon are half of carrier phase wavelength, and λ indicates satellite navigation signals carrier phase wave
It is long.
2) the corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, it is described to penetrate
Frequency front passage handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Each bay corresponds to radio-frequency front-end channel all the way, and for the array antenna of M bay, shared M are penetrated
Frequency front passage (M=4 or M=7).
Include the first bandpass filter, the first low noise amplifier, frequency mixer, the second band per the radio-frequency front-end channel described all the way
Bandpass filter, the second low noise amplifier, A/D converter, AGC Control and channel calibration module；
The radio-frequency front-end is used to be converted into including GNSS signal and frequency by the navigation radiofrequency signal that bay exports
The lower digital baseband signal of rate, and be filtered, amplify in the process, gain control, channel calibration；
The bay, first bandpass filter, first low noise amplifier, the frequency mixer, described
Two band-pass filter, second low noise amplifier, the A/D converter and the channel calibration module are sequentially connected；It is described
Local oscillator is connect with the frequency mixer；One end of the AGC Control is connect with the A/D converter, the other end and institute
State the connection of the second low noise amplifier.
First bandpass filter is used to filter out various interference and the noise except GNSS signal wave band, is filtered
Wave simulation signal；
First low noise amplifier is used to carry out power to the filtered analog signals that first bandpass filter exports
Amplification obtains radio frequency amplified signal；
The frequency mixer is used to the radio frequency amplified signal and the local oscillation signal that the local oscillator generates carrying out phase
Multiply, exports mixed frequency signal；
Second bandpass filter is used to filter out the high frequency section in mixed frequency signal, exports analog if signal；
Second low noise amplifier is used to carry out power to the analog if signal that second bandpass filter exports
Amplification obtains analog intermediate frequency amplified signal；
The A/D converter is used to the analog intermediate frequency amplified signal being converted to digital medium-frequency signal, and by the number
Word intermediate-freuqncy signal gives the AGC Control and the channel calibration module respectively；
The AGC Control is used to adjust the gain of second low noise amplifier, and the input of the A/D converter is made to believe
Number amplitude maintains a constant；
The channel calibration module exports digital baseband signal for being corrected to Ro-vibrational population.
3) the anti-interference process module carries out adaptive array signal processing to the digital baseband signal, to each antenna
Array element carries out phase weighting control and changes array antenna beam direction, to suppress elimination interference signal；Ensureing per railway digital base
It, will be per road bay letter by adjusting the phase shift weights per road array element signal under the premise of the amplitude of band signal is equal
Number weighting summation synthesizes composite signal total all the way, and glitch-free satellite navigation signals are obtained to eliminate interference.Specially：
For the array antenna that array element number is M, the digital baseband signal on the roads M can be obtained, respectively the number on the roads Ji Mei
Baseband signal is x1(n),x2(n),x3(n),...,xM(n), wherein xj(n) indicate bay j in the digital baseband of moment n
Frequency signal, j=1,2 ..., M.
Choose the intermediate-freuqncy signal of the digital baseband all the way x of the center array element positioned at antenna array centreM(n) as with reference to letter
Number, and to other M-1 railway digital baseband signals x1(n),x2(n),...,xM-1(n) phase shift processing is carried out, amplitude remains unchanged.It is false
If the digital medium-frequency signal phase shift value on the 1st road to the roads M-1 is respectively w1(n),w2(n),...,wM-1(n), wherein | wi(n) |=
1, i=1,2 ..., M-1, then composite signal y (n) is：
Y (n)=w1(n)x1(n)+w2(n)x2(n)+...wM-1(n)xM-1(n)+xM(n)
Wherein, wi(n) it is known as the weight coefficient on the i-th tunnel, i=1,2 ..., M-1, defining weight coefficient vector W is
W=[w1(n),w2(n),...,wM-1(n),1]T
It is necessary to meet following condition by weight coefficient vector W：
In formula, PminIndicate that the minimum power of composite signal, y (n) indicate composite signal.
That is weight coefficient vector W should make the power of synthesized output signal minimum.
The present embodiment also provides a kind of method of the elimination satellite navigation interference to realize survey appearance based on array antenna, such as schemes
Shown in 1, the method includes：
The satellite navigation array antenna is set on carrier, receives satellite navigation radio-frequency signal；
The corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, the radio frequency
Front passage handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes to formation in interference
Wave beam null eliminates interference, obtains glitch-free satellite navigation signals.
After recovering the satellite navigation signals carrier phase that each bay receives, appearance model is surveyed using array antenna
The ambiguity of carrier phase between bay is calculated, solves the posture of array antenna, and then calculate the carrier
Posture；
After carrying out anti-interference process to the signal that array antenna receives, interference is disappeared in obtained composite signal
It removes, the capture of satellite navigation signals can be carried out according to composite signal, tracking is handled, the acquisition location navigation knot after navigation calculation
Fruit.
Ambiguity of carrier phase and calculating attitude of carrier between the survey appearance model calculating array element using array antenna
Detailed process it is as follows：
According to composite signal and per road signal phase shift value, satellite navigation is recovered from each bay received signal
Signal carrier phase value, it is assumed that the carrier-phase measurement of bay 1 to bay M are respectively φ1,φ2,...,φM。
It is referred on the basis of center antenna array element M, bay i and the carrier phase list of center antenna array element M Relative Navigation satellite s are poor
Value can be expressed as
In formula, i=1,2 ..., M-1, λ are satellite navigation signals carrier wavelength,Indicate bay i and bay
The carrier phase list difference of M relative satellites s, esIndicate array antenna to the unit sight line vector of satellite s, biIndicate array element M to battle array
The baseline vector of first i,Indicate the carrier phase list difference integer ambiguity of array element i and array element M,Indicate carrier phase list
Mistake is poor.
Array element i and the carrier phase list difference of center array element M relative satellites s are made of integer part and fractional part.It is whole
Number partAnd fractional partRespectively
Wherein, round () indicates that round number, frac () indicate the decimal residual after round.
Assuming that have in the air it is N number of altogether regard satellite, then baseline vector b can be solvedi：
In formula,yiIt indicates to measure arrow
Amount, HiIndicate measurement matrix,Indicate the fractional part of k-th of carrier phase list difference, ek,TIndicate the list of kth satellite
Position sight line vector, k=1,2 ..., N.
The elevation angle theta of baseline can be solved by baseline pitch angle, azimuth and baseline vector relationshipiThe azimuth and
In formula, θiWithThe elevation angle and azimuth of baseline vector, b are indicated respectivelyi,e,bi,n,bi,uBaseline vector is indicated respectively
East orientation, north orientation, day is to component, diIndicate baseline vector biLength.
By taking application of the array antenna on unmanned plane as an example, as shown in Fig. 2, when the satellite navigation array antenna includes 4
When a bay, it is assumed that 1 direction of array element 4- array elements is heading, and 3 direction of array element 2- array elements is port wing-starboard wing
Direction, then solving baseline vector biAfter (i=1,2 ..., M-1), tail-heading vector b can be obtainedAfterwards-preceding=
b1, port wing-starboard wing direction vector is bL-R=b3-b2, nothing can be solved according to the relationship of baseline vector and attitude angle
Three man-machine attitude angles.
Claims (9)
1. a kind of satellite navigation anti-interference method based on array antenna, which is characterized in that the described method comprises the following steps：
Satellite navigation array antenna is set, for receiving satellite navigation radio-frequency signal；
The corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, the radio-frequency front-end
Channel handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes to formation wave beam in interference
Null eliminates interference, obtains glitch-free satellite navigation signals.
2. a kind of satellite navigation anti-interference method based on array antenna according to claim 1, which is characterized in that described to defend
Star navigation array antenna includes 4 bays or 7 bays；
When including 4 bays, centered on one of bay, other three antennas are evenly distributed in center
Around bay and equilateral triangle is constituted, three bays of surrounding are half of carrier wave at a distance from center antenna array element
Phase wave length；
When including 7 bays, centered on one of bay, other six antennas are evenly distributed in center
Around bay and regular hexagon is constituted, six bays of surrounding are half of carrier wave at a distance from center antenna array element
The length of side of wavelength, regular hexagon is also half of carrier phase wavelength.
3. a kind of satellite navigation anti-interference method based on array antenna according to claim 1, which is characterized in that the day
Linear array member receives the navigation radiofrequency signal that GNSS satellite is emitted, which is electromagnetic wave signal, the antenna array
After the electromagnetic wave signal is transformed into voltage signal or current signal by member, it is supplied to the radio-frequency front-end of receiver.
4. a kind of satellite navigation anti-interference method based on array antenna according to claim 1, which is characterized in that per all the way
The radio-frequency front-end channel includes the first bandpass filter, the first low noise amplifier, frequency mixer, the second low noise amplifier, second
Bandpass filter, A/D converter, AGC Control and channel calibration module；
The radio-frequency front-end be used for by the navigation radiofrequency signal that bay export be converted into include GNSS signal and frequency compared with
Low digital baseband signal, and be filtered, amplify in the process, gain control, channel calibration；
The bay, first bandpass filter, first low noise amplifier, the frequency mixer, second band
Bandpass filter, second low noise amplifier, the A/D converter and the channel calibration module are sequentially connected；Local oscillations
Device is connect with the frequency mixer；One end of the AGC Control is connect with the A/D converter, and the other end is low with described second
Amplifier of making an uproar connects；
First bandpass filter is used to filter out various interference and the noise except GNSS signal wave band, obtains filtering mould
Quasi- signal；
First low noise amplifier is used to carry out power amplification to the filtered analog signals that first bandpass filter exports,
Obtain radio frequency amplified signal；
The frequency mixer is defeated for the radio frequency amplified signal to be multiplied with the local oscillation signal that the local oscillator generates
Go out mixed frequency signal；
Second bandpass filter is used to filter out the high frequency section in the mixed frequency signal, exports analog if signal；
Second low noise amplifier is used to carry out power to the analog if signal that second bandpass filter exports
Amplification obtains analog intermediate frequency amplified signal；
The A/D converter is used to the analog intermediate frequency amplified signal being converted to digital medium-frequency signal, and will be in the number
Frequency signal gives the AGC Control and the channel calibration module respectively；
The AGC Control is used to adjust the gain of second low noise amplifier, makes the input signal width of the A/D converter
Value maintains a constant；
The channel calibration module exports digital baseband signal for being corrected to Ro-vibrational population.
5. a kind of satellite navigation anti-interference method based on array antenna according to claim 1, which is characterized in that obtain
The way of digital baseband signal, it is identical as the number of bay in array antenna, i.e., it is the array day of M for array element number
Line can obtain m railway digital baseband signal in total.
6. a kind of satellite navigation anti-interference method based on array antenna according to claim 1, which is characterized in that described anti-
Processing module is interfered to carry out adaptive array signal processing to the digital baseband signal, specially：
Phase weighting control is carried out to each bay and changes array antenna beam direction, to suppress elimination interference signal；It is protecting
It, will be every by adjusting the phase shift weights per road array element signal under the premise of card is equal per the amplitude of railway digital baseband signal
Road array element signal weighting summation synthesizes composite signal total all the way, and glitch-free satellite navigation letter is obtained to eliminate interference
Number.
7. a kind of satellite navigation anti-interference method based on array antenna according to claim 6, which is characterized in that the conjunction
It is at signal：
Y (n)=w1(n)x1(n)+w2(n)x2(n)+...wM-1(n)xM-1(n)+xM(n)；
Wherein, x1(n),x2(n),x3(n),...,xM(n) it is the digital baseband signal on the roads 1~M, xj(n) bay j is indicated
In the digital baseband intermediate-freuqncy signal of moment n, j=1,2 ..., M, y (n) indicate that M array element signals are obtained by phase shift weighting summation
The composite signal arrived；
Choose the intermediate-freuqncy signal of the digital baseband all the way x of the center array element positioned at antenna array centreM(n) it is used as and refers to signal, and is right
Other M-1 railway digital baseband intermediate frequency signals x1(n),x2(n),...,xM-1(n) phase shift processing is carried out, from the 1st road to the roads M-1
Digital medium-frequency signal phase shift weights are respectively w1(n),w2(n),...,wM-1(n)。
8. a kind of satellite navigation anti-interference method based on array antenna according to claim 7, which is characterized in that wi(n) it is
The intermediate-freuqncy signal phase shift value or intermediate-freuqncy signal weights on the i-th tunnel, since amplitude remains unchanged, only change phase, therefore phase shift value and
Weights are identical, wherein i=1,2 ..., M-1；Defining weight coefficient vector W is
W=[w1(n),w2(n),...,wM-1(n),1]T
It is necessary to meet following condition by weight coefficient vector W：
In formula, PminIndicate that the minimum power of composite signal, y (n) indicate composite signal.
9. a kind of elimination satellite navigation based on array antenna is interfered to realize the method for surveying appearance, any using claim 1-8
Satellite navigation anti-interference method based on array antenna described in, which is characterized in that the method includes：
The satellite navigation array antenna is set on carrier, receives satellite navigation radio-frequency signal；
The corresponding radio-frequency front-end channel all the way of each bay in the satellite navigation array antenna, the radio-frequency front-end
Channel handles the radiofrequency signal that bay receives, and generates digital baseband signal；
Anti-interference process module carries out adaptive array signal processing to the digital baseband signal, comes to formation wave beam in interference
Null eliminates interference, obtains glitch-free satellite navigation signals；
After recovering the satellite navigation signals carrier phase that each bay receives, surveys appearance model using array antenna and calculate
Ambiguity of carrier phase between bay, solves the posture of array antenna, and then calculates the posture of the carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194682.2A CN108519608A (en) | 2018-03-09 | 2018-03-09 | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810194682.2A CN108519608A (en) | 2018-03-09 | 2018-03-09 | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108519608A true CN108519608A (en) | 2018-09-11 |
Family
ID=63432747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810194682.2A Pending CN108519608A (en) | 2018-03-09 | 2018-03-09 | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108519608A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633692A (en) * | 2018-11-26 | 2019-04-16 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | GNSS navigation satellite signal anti-interference processing method |
| CN109831240A (en) * | 2018-12-18 | 2019-05-31 | 西安思丹德信息技术有限公司 | A kind of anti-interference airborne data link system based on array antenna |
| CN111722255A (en) * | 2020-06-09 | 2020-09-29 | 上海交通大学 | Space-time modulation-based regional navigation positioning system and method |
| CN111866619A (en) * | 2020-07-09 | 2020-10-30 | 成都傅立叶电子科技有限公司 | Digital acquisition method, receiving method and device for multi-target remote measurement ground station |
| CN113009521A (en) * | 2021-03-02 | 2021-06-22 | 北京航空航天大学 | Aerial target detection device based on GNSS forward scattering characteristic |
| CN113109844A (en) * | 2021-04-15 | 2021-07-13 | 中国人民解放军63812部队 | Deception signal detection method and device based on linear antenna array |
| CN113376663A (en) * | 2021-05-12 | 2021-09-10 | 中国科学院国家授时中心 | Evaluation method for actually measured navigation signal ground receiving power |
| CN114660552A (en) * | 2022-03-03 | 2022-06-24 | 北京卫星信息工程研究所 | Satellite-borne GNSS-S radar ship target signal receiving and direct interference suppression method |
| CN116260499A (en) * | 2023-05-10 | 2023-06-13 | 成都星航微波技术有限公司 | Satellite-borne multi-beam T/R phased array and solar power supply automatic unfolding system |
| CN117200813A (en) * | 2023-11-07 | 2023-12-08 | 成都飞机工业（集团）有限责任公司 | Method and system for detecting burst signal of radio navigation system |
Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201388192Y (en) * | 2009-03-17 | 2010-01-20 | 张建城 | Big Dipper multi-mode time service receiving device |
| CN101800363A (en) * | 2009-02-10 | 2010-08-11 | 石家庄世纪森诺通讯有限公司 | Integrated double-mode time-service active antenna and double-mode analog-digital demodulation module |
| CN101825717A (en) * | 2010-04-16 | 2010-09-08 | 北京航空航天大学 | Carrier smoothing code pseudorange technology-based dynamic attitude positioning method |
| CN101872010A (en) * | 2009-04-24 | 2010-10-27 | 郑州威科姆科技股份有限公司 | Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module |
| CN101900819A (en) * | 2010-07-15 | 2010-12-01 | 哈尔滨工业大学 | Blind adaptive space-time array anti-interference method for navigation receiver |
| CN102353970A (en) * | 2011-06-10 | 2012-02-15 | 北京航空航天大学 | GPS/SINS (global positioning system/strapdown inertial navigation system) combined navigating system with high anti-interference performance and realizing method thereof |
| US20120319902A1 (en) * | 2011-06-15 | 2012-12-20 | Astrium Gmbh | Antenna beam forming for tracking a trasmitter signal |
| CN203688805U (en) * | 2014-01-22 | 2014-07-02 | 哈尔滨工业大学 | Satellite navigation signal intermediate-frequency sampling apparatus |
| CN104076368A (en) * | 2014-06-25 | 2014-10-01 | 芜湖航飞科技股份有限公司 | GPS anti-interference antenna technology |
| CN104300993A (en) * | 2014-09-22 | 2015-01-21 | 中国科学院国家授时中心 | BPL long wave timing frequency adjustment receiver |
| CN104297768A (en) * | 2014-09-29 | 2015-01-21 | 济南鼎润电子科技有限公司 | Front-end system capable of simultaneously receiving GPS signals and Beidou second-generation signals and application of front-end system |
| CN104320155A (en) * | 2014-11-11 | 2015-01-28 | 济南鼎润电子科技有限公司 | Beidou I navigation chip front-end transmit-receive circuit system and work method thereof |
| CN104330809A (en) * | 2014-03-17 | 2015-02-04 | 中国民航大学 | Multi-information-source estimation based satellite navigation deception jamming inhibition method |
| CN104635244A (en) * | 2015-02-03 | 2015-05-20 | 芜湖航飞科技股份有限公司 | Anti-interference antenna on satellite navigation receiver |
| CN104698473A (en) * | 2015-03-24 | 2015-06-10 | 芜湖航飞科技股份有限公司 | Space-time anti-interference filter system of GPS receiver |
| US20150226856A1 (en) * | 2013-03-13 | 2015-08-13 | Mayflower Communications Company, Inc. | Distortionless mean phase antijam nulling of gps signals |
| CN102565834B (en) * | 2011-11-30 | 2015-09-16 | 重庆九洲星熠导航设备有限公司 | A kind of single-frequency GPS direction-finding system and DF and location method thereof |
| CN105223590A (en) * | 2015-10-27 | 2016-01-06 | 国信军创(岳阳)六九零六科技有限公司 | A kind of mixed satellite navigation anti-interference method and device |
| CN105301606A (en) * | 2015-09-21 | 2016-02-03 | 湖南中森通信科技有限公司 | Anti-interference method and device for navigation receiver of cascade structure |
| CN105403904A (en) * | 2015-11-26 | 2016-03-16 | 中国航天时代电子公司 | Antenna-array-based satellite-navigation single-frequency attitude determination method |
| CN105490688A (en) * | 2015-11-24 | 2016-04-13 | 航天恒星科技有限公司 | Anti-interference method and anti-interference device for array antenna |
| CN205157787U (en) * | 2015-10-27 | 2016-04-13 | 国信军创(岳阳)六九零六科技有限公司 | Mix satellite navigation anti jamming unit |
| CN105515632A (en) * | 2015-11-24 | 2016-04-20 | 航天恒星科技有限公司 | Anti-interference method and device for array antennas |
| CN105629266A (en) * | 2015-12-30 | 2016-06-01 | 中国电子科技集团公司第五十四研究所 | Blind-adaptive combined suppression method for satellite navigation cheating jamming and suppressing jamming |
| CN106291605A (en) * | 2016-08-30 | 2017-01-04 | 北京航天长征飞行器研究所 | A kind of satellite navigation anti-interference reception system |
| CN106556849A (en) * | 2016-11-11 | 2017-04-05 | 深圳市天弓导航科技有限公司 | A kind of digital beam froming method of satellite navigation receiving equipment |
| CN107202577A (en) * | 2017-06-08 | 2017-09-26 | 南京理工大学 | A kind of micro- PNT systems based on GNSS, chip atomic clock and micro- inertial navigation |
| CN107247274A (en) * | 2017-06-27 | 2017-10-13 | 重庆九洲星熠导航设备有限公司 | A kind of four quick self-adapted methods of array element anti-interference antenna passage |
| CN107356944A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method for improving satellite navigation array antenna interference free performance |
| CN107367774A (en) * | 2017-06-06 | 2017-11-21 | 芜湖航飞科技股份有限公司 | A kind of sounding system processing unit for Beidou navigation |
-
2018
- 2018-03-09 CN CN201810194682.2A patent/CN108519608A/en active Pending
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800363A (en) * | 2009-02-10 | 2010-08-11 | 石家庄世纪森诺通讯有限公司 | Integrated double-mode time-service active antenna and double-mode analog-digital demodulation module |
| CN201388192Y (en) * | 2009-03-17 | 2010-01-20 | 张建城 | Big Dipper multi-mode time service receiving device |
| CN101872010A (en) * | 2009-04-24 | 2010-10-27 | 郑州威科姆科技股份有限公司 | Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module |
| CN101825717A (en) * | 2010-04-16 | 2010-09-08 | 北京航空航天大学 | Carrier smoothing code pseudorange technology-based dynamic attitude positioning method |
| CN101900819A (en) * | 2010-07-15 | 2010-12-01 | 哈尔滨工业大学 | Blind adaptive space-time array anti-interference method for navigation receiver |
| CN102353970A (en) * | 2011-06-10 | 2012-02-15 | 北京航空航天大学 | GPS/SINS (global positioning system/strapdown inertial navigation system) combined navigating system with high anti-interference performance and realizing method thereof |
| US20120319902A1 (en) * | 2011-06-15 | 2012-12-20 | Astrium Gmbh | Antenna beam forming for tracking a trasmitter signal |
| CN102565834B (en) * | 2011-11-30 | 2015-09-16 | 重庆九洲星熠导航设备有限公司 | A kind of single-frequency GPS direction-finding system and DF and location method thereof |
| US20150226856A1 (en) * | 2013-03-13 | 2015-08-13 | Mayflower Communications Company, Inc. | Distortionless mean phase antijam nulling of gps signals |
| CN203688805U (en) * | 2014-01-22 | 2014-07-02 | 哈尔滨工业大学 | Satellite navigation signal intermediate-frequency sampling apparatus |
| CN104330809A (en) * | 2014-03-17 | 2015-02-04 | 中国民航大学 | Multi-information-source estimation based satellite navigation deception jamming inhibition method |
| CN104076368A (en) * | 2014-06-25 | 2014-10-01 | 芜湖航飞科技股份有限公司 | GPS anti-interference antenna technology |
| CN104300993A (en) * | 2014-09-22 | 2015-01-21 | 中国科学院国家授时中心 | BPL long wave timing frequency adjustment receiver |
| CN104297768A (en) * | 2014-09-29 | 2015-01-21 | 济南鼎润电子科技有限公司 | Front-end system capable of simultaneously receiving GPS signals and Beidou second-generation signals and application of front-end system |
| CN104320155A (en) * | 2014-11-11 | 2015-01-28 | 济南鼎润电子科技有限公司 | Beidou I navigation chip front-end transmit-receive circuit system and work method thereof |
| CN104635244A (en) * | 2015-02-03 | 2015-05-20 | 芜湖航飞科技股份有限公司 | Anti-interference antenna on satellite navigation receiver |
| CN104698473A (en) * | 2015-03-24 | 2015-06-10 | 芜湖航飞科技股份有限公司 | Space-time anti-interference filter system of GPS receiver |
| CN105301606A (en) * | 2015-09-21 | 2016-02-03 | 湖南中森通信科技有限公司 | Anti-interference method and device for navigation receiver of cascade structure |
| CN105223590A (en) * | 2015-10-27 | 2016-01-06 | 国信军创(岳阳)六九零六科技有限公司 | A kind of mixed satellite navigation anti-interference method and device |
| CN205157787U (en) * | 2015-10-27 | 2016-04-13 | 国信军创(岳阳)六九零六科技有限公司 | Mix satellite navigation anti jamming unit |
| CN105490688A (en) * | 2015-11-24 | 2016-04-13 | 航天恒星科技有限公司 | Anti-interference method and anti-interference device for array antenna |
| CN105515632A (en) * | 2015-11-24 | 2016-04-20 | 航天恒星科技有限公司 | Anti-interference method and device for array antennas |
| CN105403904A (en) * | 2015-11-26 | 2016-03-16 | 中国航天时代电子公司 | Antenna-array-based satellite-navigation single-frequency attitude determination method |
| CN105629266A (en) * | 2015-12-30 | 2016-06-01 | 中国电子科技集团公司第五十四研究所 | Blind-adaptive combined suppression method for satellite navigation cheating jamming and suppressing jamming |
| CN106291605A (en) * | 2016-08-30 | 2017-01-04 | 北京航天长征飞行器研究所 | A kind of satellite navigation anti-interference reception system |
| CN106556849A (en) * | 2016-11-11 | 2017-04-05 | 深圳市天弓导航科技有限公司 | A kind of digital beam froming method of satellite navigation receiving equipment |
| CN107356944A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The method for improving satellite navigation array antenna interference free performance |
| CN107367774A (en) * | 2017-06-06 | 2017-11-21 | 芜湖航飞科技股份有限公司 | A kind of sounding system processing unit for Beidou navigation |
| CN107202577A (en) * | 2017-06-08 | 2017-09-26 | 南京理工大学 | A kind of micro- PNT systems based on GNSS, chip atomic clock and micro- inertial navigation |
| CN107247274A (en) * | 2017-06-27 | 2017-10-13 | 重庆九洲星熠导航设备有限公司 | A kind of four quick self-adapted methods of array element anti-interference antenna passage |
Non-Patent Citations (1)
| Title |
|---|
| 陈国安: "卫星导航接收机空间自适应调零抗干扰技术研究", 《导航与控制》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633692A (en) * | 2018-11-26 | 2019-04-16 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | GNSS navigation satellite signal anti-interference processing method |
| CN109831240B (en) * | 2018-12-18 | 2021-07-30 | 西安思丹德信息技术有限公司 | Anti-interference airborne data link system based on array antenna |
| CN109831240A (en) * | 2018-12-18 | 2019-05-31 | 西安思丹德信息技术有限公司 | A kind of anti-interference airborne data link system based on array antenna |
| CN111722255A (en) * | 2020-06-09 | 2020-09-29 | 上海交通大学 | Space-time modulation-based regional navigation positioning system and method |
| CN111866619A (en) * | 2020-07-09 | 2020-10-30 | 成都傅立叶电子科技有限公司 | Digital acquisition method, receiving method and device for multi-target remote measurement ground station |
| CN111866619B (en) * | 2020-07-09 | 2022-04-22 | 成都傅立叶电子科技有限公司 | Digital acquisition method, receiving method and device for multi-target remote measurement ground station |
| CN113009521A (en) * | 2021-03-02 | 2021-06-22 | 北京航空航天大学 | Aerial target detection device based on GNSS forward scattering characteristic |
| CN113009521B (en) * | 2021-03-02 | 2022-11-18 | 北京航空航天大学 | Aerial target detection device based on GNSS forward scattering characteristic |
| CN113109844A (en) * | 2021-04-15 | 2021-07-13 | 中国人民解放军63812部队 | Deception signal detection method and device based on linear antenna array |
| CN113376663A (en) * | 2021-05-12 | 2021-09-10 | 中国科学院国家授时中心 | Evaluation method for actually measured navigation signal ground receiving power |
| CN113376663B (en) * | 2021-05-12 | 2023-12-19 | 中国科学院国家授时中心 | Evaluation method for ground receiving power of actually measured navigation signal |
| CN114660552A (en) * | 2022-03-03 | 2022-06-24 | 北京卫星信息工程研究所 | Satellite-borne GNSS-S radar ship target signal receiving and direct interference suppression method |
| CN114660552B (en) * | 2022-03-03 | 2023-03-10 | 北京卫星信息工程研究所 | Satellite-borne GNSS-S radar ship target signal receiving and direct interference suppression method |
| CN116260499A (en) * | 2023-05-10 | 2023-06-13 | 成都星航微波技术有限公司 | Satellite-borne multi-beam T/R phased array and solar power supply automatic unfolding system |
| CN117200813A (en) * | 2023-11-07 | 2023-12-08 | 成都飞机工业（集团）有限责任公司 | Method and system for detecting burst signal of radio navigation system |
| CN117200813B (en) * | 2023-11-07 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Method and system for detecting burst signal of radio navigation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108519608A (en) | A kind of satellite navigation based on array antenna is anti-interference and surveys attitude positioning method | |
| Masters | Surface remote sensing applications of GNSS bistatic radar: Soil moisture and aircraft altimetry | |
| CN107315183A (en) | The calibration method of aeronautical satellite array antenna received system | |
| Li et al. | A robust anti-jamming navigation receiver with antenna array and GPS/SINS | |
| CN110376614B (en) | Navigation anti-interference enhanced load system and method based on low-earth-orbit satellite | |
| CN101900819B (en) | Blind adaptive space-time array anti-interference method for navigation receiver | |
| CN105388499B (en) | Method for overcoming near-far effect by using double antennas in pseudo-satellite foundation enhancement system | |
| CN103941267A (en) | Satellite navigation deception interference suppression method combined with denoising and DOA estimation | |
| CN109239741A (en) | The automatic calibration test system of the more array-element antennas of navigation satellite | |
| US3787862A (en) | Radio direction finder system | |
| CN109061695A (en) | A kind of navigation locating method suitable for attitude maneuver satellite | |
| CN103176191A (en) | Pseudo-satellite near-far effect inhibition method based on multi-constrained beam forming | |
| CN112558075A (en) | Multiband multi-beam shipborne satellite meteorological information receiving and wind field detecting system | |
| CN106556849A (en) | A kind of digital beam froming method of satellite navigation receiving equipment | |
| CN103869347A (en) | Beidou satellite navigation and positioning system | |
| CN109283555A (en) | It defends and leads Wave beam forming ways for inference prohibition | |
| US6906664B2 (en) | Method and system using a GPS-based phased-array scheme for three-axis attitude determination | |
| CN115113133A (en) | Dual-channel electromagnetic spectrum direction-finding positioning system based on unmanned aerial vehicle spinning | |
| CN110208737A (en) | A kind of ultrashort wave binary channels broadband direction-finding system and thresholding determine direction-finding method | |
| US10481273B1 (en) | Systems and methods for GNSS processing during interference suppression | |
| CN113009521A (en) | Aerial target detection device based on GNSS forward scattering characteristic | |
| CN108008347A (en) | Direction-finding method for ACAS | |
| Xie et al. | Experimental research of multi-FM based passive radar | |
| CN109116387A (en) | Navigational satellite reflected signal intermediate frequency Enhancement Method | |
| CN103091685A (en) | Space-time cascade anti-interference device based on inertial navigation processing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180911 |
|
| RJ01 | Rejection of invention patent application after publication |