CN109633694A - A kind of civilian GPS satellite navigation receiver interference signal building method - Google Patents
A kind of civilian GPS satellite navigation receiver interference signal building method Download PDFInfo
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- CN109633694A CN109633694A CN201811642047.2A CN201811642047A CN109633694A CN 109633694 A CN109633694 A CN 109633694A CN 201811642047 A CN201811642047 A CN 201811642047A CN 109633694 A CN109633694 A CN 109633694A
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- gps satellite
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- navigation receiver
- satellite navigation
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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
-
- 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
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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)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a kind of civilian GPS satellite navigation receiver interference signal building methods, GPS satellite quantity in present viewing field is obtained by civilian GPS satellite navigation receiver, pseudorange, spreading code, the information such as Doppler shift, coordinate of the dummy location in rectangular coordinate system is set, calculate every GPS satellite signal travel to by satellite navigation receiver antenna with travel to the time difference at specified false coordinate, calculate interfering signal power level, N road interference signal of the construction for N GPS satellite in the visual field, the road the N interference signal of generation is superimposed, form interference output signals.Signal power of the present invention is much smaller than conventional interfering signal power, and the protection zone that the interference signal of generation is formed is much larger than the protection scope that conventional interference signal is formed, and the interference of dipper system civil signal receiver is applied also for after parameter is modified.
Description
Technical field
The invention belongs to satellite navigations to fight field, be that one kind is prevented using civilian GPS satellite navigation receiver to sensitivity
The method of region progress Illegal survey and invasion.
Background technique
Civilian GPS satellite navigation receiver is widely used to the positioning, time service and navigation of every profession and trade, and plays and want emphatically
Effect.But it is also utilized this year, Illegal survey is carried out to China military area and carries commercial by part criminal
Small drone carries out illegal invasion to emphasis sensitizing range.Serious prestige is constituted to China's military affairs sensitive information and social security
The side of body.
Currently, the protection to sensitizing range is mainly used with satellite navigation signals with the high-power compacting interference signal of frequency band
Protected, conventional interference signal type include: continuous wave CO_2 laser, narrow-band noise interference, broadband noise interference, Sweeping nonlinearity and
Impulse modulation interference.Conventional compacting interference method is simple and easy, and civilian GPS satellite navigation receiver can be made in interference region
Failure, to play the role of locality protection.But with the development of satellite navigation Anti-Jamming Technique, so that conventional pressing type is dry
It disturbs signal power to be effectively suppressed, high-power compacting interference method is caused to strongly reduce the effective protection range of sensitizing range.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of civilian GPS satellite navigation receiver interference signal structure
Method is made, the constellation and temporal information and disclosed civil navigation signal coded modulation format weight of navigation satellite in the visual field are utilized
Structure corresponds to the satellite navigation interference signal of a certain dummy location coordinate, and by power regulation interference signal is propagated and reach
The power level value on protection zone boundary is maintained at -90dBmW magnitude.Compared to conventional pressing type interference method, the method for the present invention structure
The interference signal made is not easy by anti-interference antenna detection senses and inhibits, but can destroy and adapter tube intrusion protection region it is civilian
The track loop of GPS satellite navigation receiver, finally make civilian GPS satellite navigation receiver generate mistake positioning result or
It can not position, to play the protective effect to sensitizing range.
The technical solution adopted by the present invention to solve the technical problems the following steps are included:
The first step obtains GPS satellite quantity N, t moment every in present viewing field by civilian GPS satellite navigation receiver
GPS satellite and pass through the pseudorange ρ between normal domestic GPS satellite navigation receiver antennan(t), spread spectrum codes Cn(t), Doppler's frequency
Inclined Δ fn(t), carrier wave initial phase θn, spatial position of the every satellite in rectangular coordinate systemWith navigation message Dn(t), subscript n=1,2 ..., N, subscript s indicate satellite；
Coordinate P of the dummy location in rectangular coordinate system is arranged in second step(j)=[x(j),y(j),z(j)], subscript j indicates dry
It disturbs, calculates the pseudorange between the coordinate points and every GPS satellite
Third step, calculate every GPS satellite signal travel to by civilian GPS satellite navigation receiver antenna with propagate
To specified false coordinate P(j)The time difference at placeWherein, C=3 × 108M/s passes for electromagnetic wave
Broadcast speed；
4th step, protection scope radius R as needed calculate interfering signal power level
Wherein, λ is the corresponding wavelength of GPS L1 frequency point centre frequency；
5th step, construction are directed to the road the N interference signal of N GPS satellite in the visual field,
Wherein, n=1,2 ..., N, f0For GPS satellite civil signal transmission carrier frequency；
The road the N interference signal of generation is superimposed by the 6th step, forms interference output signals
The beneficial effects of the present invention are:
1) under the conditions of realizing identical protection scope, the method for the present invention signal power is much smaller than conventional interfering signal power；
2) under the conditions of identical transmission power, the protection zone that the interference signal that the method for the present invention generates is formed is much larger than conventional
The protection scope that interference signal is formed；
3) in the case where civilian GPS satellite navigation receiver has resistance to compression disturbed condition, even if the method for the present invention generation is dry
It disturbs signal to be inhibited by anti-interference process device, the post fit residuals signal after inhibiting can still lure that civilian GPS satellite navigation receives into
Machine generates location of mistake result or can not position.
The method of the present invention applies also for the interference of dipper system civil signal receiver after parameter is modified.
Specific embodiment
Below with reference to embodiment, the present invention is further described, and the invention includes, but is not limited to, the following examples.
The present invention realizes that steps are as follows:
Step 1: obtaining GPS satellite quantity N, t moment in present viewing field by normal domestic GPS satellite navigation receiver
Every GPS satellite and pass through the pseudorange ρ between normal domestic GPS satellite navigation receiver antennan(t), spread spectrum codes Cn(t), how general
Strangle frequency deviation Δ fn(t), carrier wave initial phase θn, spatial position of the every satellite in rectangular coordinate systemWith navigation message Dn(t) (subscript n=1,2 ..., N, subscript s indicate satellite).
Step 2: coordinate P of the setting dummy location in rectangular coordinate system(j)=[x(j),y(j),z(j)] (subscript j indicates dry
Disturb), and calculate the pseudorange between the coordinate points and every GPS satelliteCalculation method is as follows:
Step 3: calculate every GPS satellite signal travel to by normal domestic GPS satellite navigation receiver antenna with
Travel to specified false coordinate P(j)The time difference Δ t at placen(t), calculation method is as follows:
Wherein, C=3 × 108M/s is propagation velocity of electromagnetic wave.
Step 4: protection scope radius R (unit is rice) calculates interfering signal power level P as neededtrans(unit is
DBmW), calculation method is as follows:
Wherein, λ is the corresponding wavelength of GPS L1 frequency point centre frequency, and unit is rice.
Step 5: N road interference signal of the construction for N GPS satellite in the visual field, the method is as follows:
Wherein, n=1,2 ..., N, f0For GPS satellite civil signal transmission carrier frequency.
Step 6: the road the N interference signal of generation is superimposed, interference output signals s is formed(j), the method is as follows:
The method of the present invention is interfered for civilian GPS satellite navigation receiver, is suitable for carrying out emphasis sensitizing range
Protection is a kind of method for preventing from carrying out Illegal survey and invasion to sensitizing range using civilian GPS satellite navigation receiver.With
For illustrating a specific embodiment of the invention for the interference of civilian GPS L1 frequency satellites navigation neceiver.
Step 1: assuming that visual GPS satellite number N=12 in present viewing field, passes through normal domestic GPS satellite navigation receiver
It obtains every GPS satellite of t moment in present viewing field and passes through the pseudorange ρ between normal domestic GPS satellite navigation receiver antennan
(t), Doppler shift Δ fn(t), carrier wave initial phase θn, spatial position of the every satellite in rectangular coordinate systemWith navigation message Dn(t) (subscript n=1,2 ..., 12, subscript s indicates satellite).
Step 2: coordinate P of the setting dummy location in rectangular coordinate system(j)=[x(j),y(j),z(j)] (subscript j indicates dry
Disturb), and the pseudorange between the coordinate points and 12 GPS satellites is calculated using formula (1)N=1,2 ..., 12.
Step 3: calculating 12 GPS satellite signals using formula (2) and travel to through normal domestic GPS satellite navigation receiver
At antenna and travel to specified false coordinate P(j)The time difference Δ t at placen(t), n=1,2 ..., 12.
Step 4: assuming that needing R=500 meters of protection scope radius, calculating interfering signal power level P using formula (3)trans
=0.3885dBmW, calculating process are as follows:
Wherein, 0.19 is the corresponding wavelength of GPS L1 frequency point centre frequency, and unit is rice.
Step 5: using formula (4) construction for 12 tunnel interference signals of 12 GPS satellites in the visual field, process is as follows:
Wherein, n=1,2 ..., N.
Step 6: the 12 tunnel interference signals generated in step 5 being superimposed using formula (5), is formed and is led for civilian GPS satellite
The interference signal s of boat receiver(j)。
Claims (1)
1. a kind of civilian GPS satellite navigation receiver interference signal building method, it is characterised in that include the following steps:
The first step obtains every GPS satellite quantity N, t moment GPS in present viewing field by civilian GPS satellite navigation receiver and defends
Star and pass through the pseudorange ρ between normal domestic GPS satellite navigation receiver antennan(t), spread spectrum codes Cn(t), Doppler shift Δ
fn(t), carrier wave initial phase θn, spatial position of the every satellite in rectangular coordinate systemWith
Navigation message Dn(t), subscript n=1,2 ..., N, subscript s indicate satellite；
Coordinate P of the dummy location in rectangular coordinate system is arranged in second step(j)=[x(j),y(j),z(j)], subscript j indicates interference,
Calculate the pseudorange between the coordinate points and every GPS satellite
Third step, calculate every GPS satellite signal travel to by civilian GPS satellite navigation receiver antenna with travel to finger
Fixed false coordinate P(j)The time difference at placeWherein, C=3 × 108M/s is Electromagnetic Wave Propagation speed
Degree；
4th step, protection scope radius R as needed calculate interfering signal power levelWherein, λ
For the corresponding wavelength of GPS L1 frequency point centre frequency；
5th step, construction are directed to the road the N interference signal of N GPS satellite in the visual field,
Wherein, n=1,2 ..., N, f0For GPS satellite civil signal transmission carrier frequency；
The road the N interference signal of generation is superimposed by the 6th step, forms interference output signals
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Cited By (7)
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| CN110361761A (en) * | 2019-08-28 | 2019-10-22 | 上海无线电设备研究所 | A kind of production GNSS cheating interference method |
| CN111045056A (en) * | 2019-11-29 | 2020-04-21 | 交通运输部长江通信管理局 | Method and device for eliminating interference satellite signal by receiver |
| CN111751846A (en) * | 2020-05-22 | 2020-10-09 | 中南民族大学 | Unmanned aerial vehicle-mounted satellite navigation interference signal detection method |
| CN112162301A (en) * | 2020-09-29 | 2021-01-01 | 海南大学 | Satellite navigation positioning method and chip for resisting deception jamming |
| CN113219500A (en) * | 2021-03-31 | 2021-08-06 | 成都飞机工业（集团）有限责任公司 | Satellite signal forwarding system used in semi-closed environment |
| CN117406249A (en) * | 2023-12-14 | 2024-01-16 | 成都安则优科技有限公司 | Anti-unmanned aerial vehicle satellite navigation equipment and data playback method |
| CN117590430A (en) * | 2023-11-27 | 2024-02-23 | 湖南跨线桥航天科技有限公司 | M code signal smart interference method for GPS captured by punching code |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361761A (en) * | 2019-08-28 | 2019-10-22 | 上海无线电设备研究所 | A kind of production GNSS cheating interference method |
| CN111045056A (en) * | 2019-11-29 | 2020-04-21 | 交通运输部长江通信管理局 | Method and device for eliminating interference satellite signal by receiver |
| CN111045056B (en) * | 2019-11-29 | 2024-04-30 | 交通运输部长江通信管理局 | Method and device for eliminating interference satellite signals of receiver |
| CN111751846A (en) * | 2020-05-22 | 2020-10-09 | 中南民族大学 | Unmanned aerial vehicle-mounted satellite navigation interference signal detection method |
| CN112162301A (en) * | 2020-09-29 | 2021-01-01 | 海南大学 | Satellite navigation positioning method and chip for resisting deception jamming |
| CN112162301B (en) * | 2020-09-29 | 2023-09-29 | 海南大学 | Anti-deception jamming satellite navigation positioning method and chip |
| CN113219500A (en) * | 2021-03-31 | 2021-08-06 | 成都飞机工业（集团）有限责任公司 | Satellite signal forwarding system used in semi-closed environment |
| CN113219500B (en) * | 2021-03-31 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | Satellite signal forwarding system used in semi-closed environment |
| CN117590430A (en) * | 2023-11-27 | 2024-02-23 | 湖南跨线桥航天科技有限公司 | M code signal smart interference method for GPS captured by punching code |
| CN117590430B (en) * | 2023-11-27 | 2024-04-19 | 湖南跨线桥航天科技有限公司 | M code signal smart interference method for GPS captured by punching code |
| CN117406249A (en) * | 2023-12-14 | 2024-01-16 | 成都安则优科技有限公司 | Anti-unmanned aerial vehicle satellite navigation equipment and data playback method |
| CN117406249B (en) * | 2023-12-14 | 2024-03-08 | 成都安则优科技有限公司 | Anti-unmanned aerial vehicle satellite navigation equipment and data playback method |
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