CN107765211A - A kind of detecting system to failing to understand radio and television intrusion signal - Google Patents
A kind of detecting system to failing to understand radio and television intrusion signal Download PDFInfo
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- CN107765211A CN107765211A CN201710970119.5A CN201710970119A CN107765211A CN 107765211 A CN107765211 A CN 107765211A CN 201710970119 A CN201710970119 A CN 201710970119A CN 107765211 A CN107765211 A CN 107765211A
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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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna
-
- 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
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
- G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/04—Position of source determined by a plurality of spaced direction-finders
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a kind of detecting system to failing to understand radio and television intrusion signal, including：Multi-section portable wireless signal receiver, cordless communication network, gateway processes center, internet and message processing module, the direction finding and positioning of radio and television intrusion signal can be rapidly carried out simultaneously, find unknown signal source, it is simple to operate, operating personnel are not required to possess professional knowledge, and measurement work can be completed according to operating procedure；It is small volume, in light weight using the wireless signal receiver of hand-held, avoid under complicated local environment, vehicle or large scale equipment can not reach in time, and can not be to the DF and location of intrusion signal；With breakpoint transmission function, when direction finding tracking of the wireless signal receiver to intrusion signal blocking or when other reasonses lose due to the short time, the tracking to intrusion signal angle information can be kept.
Description
Technical field
The present invention relates to location technology, particularly a kind of detecting system to failing to understand radio and television intrusion signal.
Background technology
In recent years, with China radio communication service rapid development, the problem of Radio Spectrum Resource relative shortage
It is more and more prominent.Radio-frequency spectrum is detected, electric wave is safeguarded and uses order, makes full use of and protect radio-frequency spectrum to provide
Source, protection radio subscriber are investigated and prosecuted to the normal use of radio frequency and break rules and regulations, illegally set platform transmitting unknown signal, especially
It is related to illegal transmitting broadcast television signal, turns into being necessarily required to for radio control.
In monitoring radio-frequency spectrum field, the Passive Localization Technology of wireless signal is divided into active location and passive location.
At present, passive location technology typically is used in radio monitoring system, both by between sensed signal sources and multiple monitoring stations
Some characteristic parameters of transmitting signal, so as to estimate the position of signal source.
In the prior art such as Japan Patent " finding out device (clear 64-78179) in orientation " and " angle-measuring equipment (flat 2-
141684) what ", the former designed is simple amplitude-comparison direction finding, i.e. eight antennas of 45 ° of arrangement interval in the same plane, is led to
Cross switch to be connected with a receiver, be also equipped with an omnidirectional antenna and be individually connected with another receiver；The latter is and increased
A saturation loop is added, its defect is to be simply possible to use in fixed monitoring station, pertains only to direction finding.Also one kind is by a variety of instrument and equipments
The integrated fixation being formed by connecting or onboard wireless monitor direction-finding system, although mobile monitoring function can also be provided, entirely
System it is bulky, system complex, maintenance difficult, involve great expense, and need the local environment condition that monitors and respectively differ
Sample, some environment vehicles or large scale equipment are not appropriate for using, can not reached in time, or even can not reach at all.At this moment, with regard to nothing
Method is convenient, it is timely, comprehensive, DF and location to failing to understand wireless signal is provided exactly, come tackle may generation event, and be
Emergency response and commander provide enough information.Further, since the limitation of use occasion and time, fixed or vehicle-mounted monitoring system
It is difficult to the requirement for meeting early warning and monitoring comprehensively.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of detecting system to failing to understand radio and television intrusion signal, with
Overcome the shortcomings of above-mentioned existing Passive Localization Technology, there is provided one kind is convenient, timely, comprehensively and accurately fails to understand broadcast television signal
DF and location method.
The purpose of the present invention is mainly achieved through the following technical solutions：
A kind of detecting system to failing to understand radio and television intrusion signal, including：Portable wireless signal receiver 1, information
Processing module 5, the portable wireless signal receiver 1 are multi-section；
The portable wireless signal receiver 1 receives not clear broadcast television signal and GPS/ Big Dipper satellite signals, will wrap
Include the data including the positional information of portable wireless signal receiver 1, not clear broadcast television signal parameter and angle information
Block, it is wirelessly transmitted to message processing module 5；
Described information processing module 5 receives and handled the data block, to the receiver location information in data block
Carry out Coordinate Conversion, on the basis of latest position information and angle information, draw on the electronic map each receiver to fail to understand
Broadcast television signal come to ray；Calculate the intersecting point coordinate between the ray that all receivers are drawn；According to these intersection point institutes
The polygon of composition determines polygon center point coordinate value；The center point coordinate value is exactly the not clear broadcast television signal
Launch site, and the center point coordinate value is shown on the electronic map.
Further, the portable wireless receiver 1 includes direction-finder antenna 11, stepping electric rotating machine 12, radiofrequency signal
Real-time measurement apparatus 13, data storage device 14, field strength computing device 15, electronic compass 16, the and of GPS/ Big Dippeves positioner 17
Wireless communication apparatus 18；
The direction-finder antenna 11 is used for receiving not clear broadcast television signal；
The stepping electric rotating machine 12 is connected with the direction-finder antenna 11, for driving the direction-finder antenna 11 at 360 degree
In the range of rotate；
The radiofrequency signal real-time measurement apparatus 13 is connected with the direction-finder antenna 11, for measuring the direction-finder antenna 11
The field strength data of the vision signal received；
The data storage device 14 is connected with the real-time measurement apparatus 13, to the real-time measurement apparatus 13 measurement
Signal strength data enter row buffering and storage, and by the signal strength data output of storage to the field strength computing device 15；
The electronic compass 16 is connected with the stepping electric rotating machine 12, is pointed to for measuring antenna between north geographic pole
Angle, and be output to the field strength computing device 15 by obtained angle value is measured；
The GPS/ Big Dippeves positioner 17 includes GPS/ Beidou antennas and positioning calculation module, for the hand-held
Wireless receiver 1 carries out satellite navigation positioning, obtains the geographical location information at current time, is output to the field strength computing device
15；
The field strength computing device 15 is quickly compared the field strength data of storage, is filtered out the direction-finder antenna 11 and is revolved
Turn the maximum field intensity values of reception signal during one 360 degree, and the bearing data provided with reference to the electronic compass 16, come
Field strength maximum direction is determined, while GPS/ Big Dippeves positioner 17 is measured to the test dot position information of output, shape of packing jointly
Into measuring data block, the wireless communication apparatus 18 is output to；
The wireless communication apparatus 18 wirelessly sends measuring data block.
Further, the field strength computing device 15, which is set with, loses the retention time；Received in the direction-finder antenna 11
When unknown signal is lost, the field strength computing device 15 can not determine field strength maximum direction；The field strength computing device 15 according to
The angle information at moment is lost, measuring data block is continued to output, until direction-finder antenna 11 receives unknown signal again；If lose
The mistake time exceeds the retention time, and the field strength computing device 15 thinks dropout, stops output measuring data block.
Further, the loss retention time is 60 seconds.
Further, the direction-finder antenna 11 is the VHF/UHF antennas for being operated in metric wave and decimetric wave radio and television frequency range.
Further, the angle value that the electronic compass 16 measures is 0 degree according to due north in units of spending, dextrorotation
Turn to calculate, scope is between 0~360 degree.
Further, the data structure of the measuring data block includes：
Portable wireless receiver coding information, the coding is corresponding with portable wireless receiver, and encodes unique；
Angle information, the angle information are the angle value in the field strength maximum direction measured；
Positional information, the positional information are the geographical coordinate (x of positioner measurementd,yd)；
Signal characteristic information, the signal characteristic include the frequency values and signal level value of unknown signal；
Time of measuring information, the time of measuring information include the date and time of measurement；
Data number information, the information to be formed is numbered to the data measured every time；
Information of check code, include data block word length and parity check code.
Further, the form that the wireless communication apparatus 18 sends data block is GSM/GPRS/CDMA with TCP/IP numbers
According to bag or short message.
Further, in addition to forwarding unit, by the forwarding unit by the portable wireless signal receiver 1
Measuring data block is sent to described information processing module 5.
Further, the forwarding unit includes cordless communication network 2, gateway processes center 3 and internet 4,
The cordless communication network 2 reports and submits the measuring data block of the portable wireless signal receiver 1 to gateway processes center 3；
The gateway processes center 3 is sent measuring data block to described information processing module 5 by internet 4.
The present invention has the beneficial effect that：
The direction finding and positioning of radio and television intrusion signal can be rapidly carried out simultaneously, find unknown signal source, operation letter
Single, operating personnel are not required to possess professional knowledge, and measurement work can be completed according to operating procedure；
It is small volume, in light weight using the wireless signal receiver of hand-held, avoid under complicated local environment, vehicle or
Large scale equipment can not reach in time, and can not be to the DF and location of intrusion signal；
By multiple wireless signal receiver networkings, by the coding of wireless receiver, different measurement points are distinguished, intrusion is believed
Number carry out direction finding, realize the fast positioning to intrusion signal；
Unknown signal source is distinguished and determined according to frequency values and signal level value, avoids the interference of other signal sources；
At the time of according to date, time and message numbering to judge DATA REASONING, entered using the measurement data of synchronization
Row positioning calculation, improve positioning precision；
With breakpoint transmission function, when direction finding of the wireless signal receiver to intrusion signal tracks blocking due to the short time
Or during other reasonses loss, the tracking to intrusion signal angle information can be kept.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is the system structure diagram of the present invention；
Fig. 2 is the portable wireless receiver principle structure chart of the present invention；
Fig. 3 is the localization method flow chart of positioner.
Fig. 4 is the overall structure diagram of passive location device.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing forms the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.
The specific embodiment of the present invention, a kind of detecting system to failing to understand radio and television intrusion signal is disclosed, such as
Shown in Fig. 1, including：Portable wireless signal receiver 1, cordless communication network 2, gateway processes center 3, message processing module 5
And the internet 4 of connection gateway processes center 3 and message processing module 5, the portable wireless signal receiver 1
To be multiple.
As shown in Fig. 2 portable wireless receiver 1 is real-time including direction-finder antenna 11, stepping electric rotating machine 12, radiofrequency signal
Measurement apparatus 13, data storage device 14, field strength computing device 15, electronic compass 16, GPS/ Big Dippeves positioner 17 and wireless
Communication device 18；
The direction-finder antenna 11 is used for receiving not clear broadcast television signal, is the very strong reception antenna of an auxiliary direction, this
Embodiment is using the VHF/UHF antennas for being operated in metric wave and decimetric wave radio and television frequency range；
The stepping electric rotating machine 12 is connected with the direction-finder antenna 11, for driving the direction-finder antenna 11 at 360 degree
In the range of rotate；
The radiofrequency signal real-time measurement apparatus 13 is connected with the direction-finder antenna 11, for measuring the direction-finder antenna 11
The field strength data of the vision signal received；
The data storage device 14 is connected with the real-time measurement apparatus 13, to the real-time measurement apparatus 13 measurement
Signal strength data enter row buffering and storage, and by the signal strength data output of storage to the field strength computing device 15；
The electronic compass 16 is an Angle Measurement Module, is connected with the stepping electric rotating machine 12, for measuring day
Angle between line sensing and north geographic pole, and the angle value that measurement is obtained is output to the field strength computing device 15, measures
Angle value be in units of degree, according to due north be 0 degree, turn clockwise calculating, and scope is between 0~360 degree；
The GPS/ Big Dippeves positioner 17 includes GPS/ Beidou antennas and positioning calculation module, for the hand-held
Wireless receiver 1 carries out satellite navigation positioning, obtains the geographical location information at current time, is output to the field strength computing device
15；
The field strength computing device 15 is quickly compared the field strength data of storage, is filtered out the direction-finder antenna 11 and is revolved
Turn the maximum field intensity values of reception signal during one 360 degree, and the bearing data provided with reference to the electronic compass 16, come
Field strength maximum direction is determined, while GPS/ Big Dippeves positioner 17 is measured to the test dot position information of output, shape of packing jointly
Into measuring data block, the wireless communication apparatus 18 is output to.
When the unknown signal that due to blocking or other reasonses, direction-finder antenna 11 receives is lost, the field strength computing device 15
Field strength maximum direction can not be determined；Loss retention time of the field strength computing device 15 according to setting, according to the loss moment
Angle information, measuring data block is continued to output, until direction-finder antenna 11 receives unknown signal again；If drop-out time exceeds
Retention time, the field strength computing device 15 think dropout, stop output measuring data block until receiving again not
Clear signal；The loss retention time can be set according to application scenarios, and 60 are arranged in the present embodiment loss retention time
Second.
The data structure of the measuring data block includes：
Portable wireless receiver coding information, the coding is corresponding with portable wireless receiver, and encodes unique；
Angle information, the angle information are the angle value in the field strength maximum direction measured；
Positional information, the positional information are the geographical coordinate (x of positioner measurementd,yd)；
Signal characteristic information, the signal characteristic include the frequency values and signal level value of unknown signal；
Time of measuring information, the time of measuring information include the date and time of measurement；
Data number information, the information to be formed is numbered to the data measured every time；
Information of check code, include data block word length and parity check code.
The wireless communication apparatus 18 in the form of TCP/IP packets or short message, is passed through using GSM/GPRS/CDMA
Cordless communication network 2 reports and submits the measuring data block to the gateway processes center 3 of system.
The gateway processes center 3 is sent the measuring data block to message processing module by internet 4
5。
Message processing module 5 is embedded with GIS platform, for handling portable wireless receiver 1 described in multi-section
The direction finding message and geographical location information sent, and analysis result is shown on the electronic map.
In measurement, multiple survey crews carry portable wireless receiver 1 in different location to not clear wireless signal
DF and location is carried out, each survey crew is during close to wireless signal transmission target, in different geographical locations not
It is disconnected to measure positioning, and send to message processing module 5.Described information processing module 5 receives according to each portable wireless
The receiver coding information that machine is sent in information distinguishes different radio receiver, and each wireless receiver is sent to the ground in information
Reason position coordinates is converted to the coordinate system coordinate value corresponding with electronic map, and believes according to time of measuring information and data number
Breath determines the latest news that each receiver is sent；Positional information and angle information are sent in electronic map according to each receiver
On draw ray；Calculate the intersecting point coordinate between the ray that all receivers are drawn；The polygon formed according to these intersection points
Polygon center point coordinate value is determined, the center point coordinate value is exactly the launch site of required unknown signal, and by described in
Center point coordinate value is shown on the electronic map.
As shown in figure 3, a kind of combined positioning method to failing to understand radio and television intrusion signal multi-point cooperative direction finding, including with
Lower step：
Step S1, multiple portable wireless receivers are in different location to failing to understand that the field strength of radio and television intrusion signal is carried out
Monitoring, obtains the data block information in each place, the data block information is sent to message processing module；The data block letter
Breath includes the temporal information and geographical coordinate, the feature of not clear radio and television intrusion signal of the portable wireless signal receiver
Angle value corresponding to value and maximum field intensity values.
The form of the data block is defined according to practical application, and the form of the present embodiment is defined as：Portable wireless receives
Angle value, geographical coordinate x corresponding to machine unique encodings, maximum field intensity valuesd, geographical coordinate yd, frequency, level, the date, the time, disappear
Breath numbering and check code.
Each key element value is arranged in order with space-separated in form defined above, is successively removed space during decoding, is obtained
To the data needed during data analysis.Any other can wirelessly send, and the message format that can be received can
It is the form of the contained lid of the present invention.
, will be according to setting when due to blocking or other reasonses, portable wireless receiver can not determine field strength maximum direction
The loss retention time, according to lose the moment angle information, measuring data block is continued to output, until portable wireless receiver
Again unknown signal is received；If drop-out time exceeds the retention time, portable wireless receiver stops output measurement data
Block, until receiving unknown signal again；The loss retention time can be set according to application scenarios, be lost in the present embodiment
The mistake retention time is arranged to 60 seconds.
Step S2, message processing module is received and pre-processed to the data block.
What the reception multi-section portable wireless of message processing module 5 receiver 1 was sent includes wireless direction-finding message data block, enters
Row includes judging the message format received, and message is decoded, carries out the pretreatment including Coordinate Conversion.As shown in figure 4,
Specifically include following sub-step：
Step S200, information is monitored and received
In this step, message processing module 5 monitors whether have the message that gateway processes center 3 is sent in real time, if it is,
The real-time reception portable wireless receiver 1 of message processing module 5 is included by what wireless network 2 and gateway processes center 3 were sent
The data block of wireless direction-finding message；If non-, then persistently monitor.
Step S201, data block information is detected by check code
The check code includes information word length and parity check code, and message processing module 5 is in the data block that receives
Information, if met the requirements, is decoded by judging that information word length and even-odd check are judged the form of message；Such as
Fruit is undesirable, receives again.
Step S202, data decoding is carried out according to the form defined
Message format according to defining is decoded, and is removed space and check code successively during decoding, is obtained data analysis
When the data that need：Portable wireless receiver unique encodings, angle value, geographical coordinate xd, geographical coordinate yd, frequency, level,
Date, time and message numbering.
Step S203, Coordinate Conversion is carried out
Judge whether to need Coordinate Conversion, if desired, the coordinate system then used according to electronic map, in the message that receives
Comprising geographical position coordinates (xd,yd) Coordinate Conversion is carried out, do not need such as, be directly entered in next step.
For example, when being positioned using GPS system, the geographical position coordinates (x that is included in the message receivedd,yd) sat for WGS84
The lower data of mark system, and electronic map uses for Beijing 54 Coordinate System, then Coordinate Conversion is carried out, by WGS84 coordinate systems in message
Geographical position coordinates (xd,yd) be converted to the Beijing 54 Coordinate System coordinate value (x corresponding with electronic mapt,yt)。
Step S204, the data received are increased in data queue memory.
Step S3, according to corresponding to the temporal information of each portable wireless receiver, geographical coordinate and maximum field intensity values
Angle value draws ray on the electronic map.
Message processing module 5 is judged in message queue according to the portable wireless receiver unique encodings included in data
The number of receiver, according to temporal information, geographical coordinate (xt,yt) and angle value ray is drawn on map.Comprise the following steps：
Step S301, obtain wireless receiver measurement geographical coordinate and with maximum field intensity values corresponding to angle value, distinguish
Different wireless receiver simultaneously judges whether data are newest and and at same time point；It is newest, carry out step S302；Otherwise,
Data are abandoned.
The newest wireless signal direction finding and positioning sent by each portable wireless receiver 1 is obtained from message queue
Information.Coding in message queue distinguishes different wireless receivers, judges message according to temporal information and number information
Whether it is newest and at same time point.
Step S302, angle value corresponding to according to portable wireless receiver geographical coordinate and with maximum field intensity values, in electricity
Ray is drawn on sub- map；Finished until ray corresponding to all portable wireless receivers for participating in monitoring is drawn.
With newest and in the message at same time point the wireless receiver geographical coordinate (x judgedt,yt) it is origin,
According to the angle value in latest news, using due north as 0 degree, turn clockwise calculating, draws ray on the electronic map.
Encoded according to portable wireless receiver, all portable wireless receivers for participating in monitoring are drawn on map and penetrated
Line, draw the oriented radial for the wireless intrusion signal position that hand-held wireless receiver on diverse geographic location is measured.
Step S4, the intersecting point coordinate between the ray that all receivers are drawn is calculated.
The coordinate put on the optional two rays i and j of the ray that all receivers are drawn, ray i meets formula y=k [i]
× (x-x [i])+y [i], (x [i], the y [i]) is to draw ray i portable wireless receiver current time in electronic map
On coordinate, the k [i] be portable wireless receiver measurement angle value；The coordinate put on ray j meets formula y=k
[j] × (x-x [j])+y [j], (x [j], the y [j]) is to draw ray j portable wireless receiver current time electronically
Coordinate on figure, the k [j] are the angle values of portable wireless receiver measurement；Coordinate on the crosspoint of two lines is expired
Sufficient formula：K [j] × (x-x [j])+y [j]=k [i] × (x-x [i])+y [i], transformation for mula obtain ray i and j x-axis coordinate
ForRay i and j y-axis coordinate in two kinds of situation, if when ray i's
Angle value is 90 degree of multiple, then the y-axis coordinate y=k [j] in crosspoint × (x-x [j])+y [j], otherwise：The then y-axis in crosspoint
Coordinate y=k [i] × (x-x [i])+y [i]；
Same time point is traveled through, the ray that all wireless receivers are drawn, according to above-mentioned computational methods, obtains all friendships
The coordinate of crunode, coordinate data is stored in array Ex and Ey, the length of array is N, and the N is crosspoint number.
Step S5, the polygon center point coordinate value of intersecting point coordinate composition is determined.
The center point coordinate value for the polygon that these intersection points are formed is calculated, the step calculates central point according to equation below
Coordinate (X, Y) value：Wherein N is intersection point number, and Ex [i] is intersection point i x-axis coordinate value, and Ey [i] is
Intersection point i y-axis coordinate value.This center point coordinate value is exactly the place in required wireless transmission source.
Step S6, central point is identified on the electronic map.
Center point coordinate value (X, the Y) display of gained will be calculated on the electronic map.In whole wireless signal DF and location
During, direction finding personnel can send letter by portable wireless receiver 1 in different geographical position to message processing module 5
Number, message processing module 5 can constantly carry out center position judgement according to the message sent, more accurately to position wireless transmission
The position in source.
Message processing module 5 is based on MAPGIS platform developments in the present embodiment, but this method is equally applicable to other
GIS platform.The coordinate system of the map used in system can use the coordinate system such as WGS84, Beijing 54, Xi'an 80 or
Self-defined coordinate system.
In summary, the detecting system provided in an embodiment of the present invention to failing to understand radio and television intrusion signal, can be quick
Ground carries out the direction finding and positioning of radio and television intrusion signal simultaneously, finds unknown signal source, simple to operate, operating personnel are not required to have
Standby professional knowledge, measurement work can be completed according to operating procedure；
It is small volume, in light weight using the wireless signal receiver of hand-held, avoid under complicated local environment, vehicle or
Large scale equipment can not reach in time, and can not be to the DF and location of intrusion signal；
By multiple wireless signal receiver networkings, by the coding of wireless receiver, different measurement points are distinguished, intrusion is believed
Number carry out direction finding, realize the fast positioning to intrusion signal；
Unknown signal source is distinguished and determined according to frequency values and signal level value, avoids the interference of other signal sources；
At the time of according to date, time and message numbering to judge DATA REASONING, entered using the measurement data of synchronization
Row positioning calculation, improve positioning precision；
With breakpoint transmission function, when direction finding of the wireless signal receiver to intrusion signal tracks blocking due to the short time
Or during other reasonses loss, the tracking to intrusion signal angle information can be kept.
It will be understood by those skilled in the art that realizing all or part of flow of above-described embodiment method, meter can be passed through
Calculation machine program instructs the hardware of correlation to complete, and described program can be stored in computer-readable recording medium.Wherein, institute
Computer-readable recording medium is stated as disk, CD, read-only memory or random access memory etc..
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
Claims (10)
- A kind of 1. detecting system to failing to understand radio and television intrusion signal, it is characterised in that including：Portable wireless signal receives Machine (1), message processing module (5), the portable wireless signal receiver (1) are multi-section；The portable wireless signal receiver (1) receives not clear broadcast television signal and GPS/ Big Dipper satellite signals, will include Data including portable wireless signal receiver (1) positional information, not clear broadcast television signal parameter and angle information Block, it is wirelessly transmitted to message processing module (5)；Described information processing module (5) receives and handles the data block, and the receiver location information in data block is entered Row Coordinate Conversion, on the basis of latest position information and angle information, it is wide to failing to understand that each receiver is drawn on the electronic map Broadcast TV signal come to ray；Calculate the intersecting point coordinate between the ray that all receivers are drawn；According to these intersection point institute groups Into polygon determine polygon center point coordinate value；The center point coordinate value is exactly the hair of the not clear broadcast television signal Place is penetrated, and the center point coordinate value is shown on the electronic map.
- 2. detecting system according to claim 1, it is characterised in that the portable wireless receiver (1) includes direction finding Antenna (11), stepping electric rotating machine (12), radiofrequency signal real-time measurement apparatus (13), data storage device (14), field strength calculate Device (15), electronic compass (16), GPS/ Big Dippeves positioner (17) and wireless communication apparatus (18)；The direction-finder antenna (11) is used for receiving not clear broadcast television signal；The stepping electric rotating machine (12) is connected with the direction-finder antenna (11), for driving the direction-finder antenna (11) 360 Rotated in the range of degree；The radiofrequency signal real-time measurement apparatus (13) is connected with the direction-finder antenna (11), for measuring the direction-finder antenna (11) the field strength data of the vision signal received；The data storage device (14) is connected with the real-time measurement apparatus (13), and the real-time measurement apparatus (13) is measured Signal strength data enter row buffering and storage, and by the signal strength data output of storage to the field strength computing device (15)；The electronic compass (16) is connected with the stepping electric rotating machine (12), is pointed to for measuring antenna between north geographic pole Angle, and be output to the field strength computing device (15) by obtained angle value is measured；The GPS/ Big Dippeves positioner (17) includes GPS/ Beidou antennas and positioning calculation module, for the hand-held without Line receiver (1) carries out satellite navigation positioning, obtains the geographical location information at current time, is output to the field strength computing device (15)；The field strength computing device (15) is quickly compared the field strength data of storage, filters out the direction-finder antenna (11) rotation Turn the maximum field intensity values of reception signal during one 360 degree, and the bearing data provided with reference to the electronic compass (16), To determine field strength maximum direction, while GPS/ Big Dippeves positioner (17) is measured to the test dot position information of output, beaten jointly Bag forms measuring data block, is output to the wireless communication apparatus (18)；The wireless communication apparatus (18) wirelessly sends measuring data block.
- 3. detecting system according to claim 2, it is characterised in that the field strength computing device (15) is set with loss and protected Hold the time；When the unknown signal that the direction-finder antenna (11) receives is lost, the field strength computing device (15) can not determine field Strong maximum direction；The field strength computing device (15) according to lose the moment angle information, continue to output measuring data block, until Direction-finder antenna (11) receives unknown signal again；If drop-out time exceeds the retention time, the field strength computing device (15) Think dropout, stop output measuring data block.
- 4. detecting system according to claim 3, it is characterised in that the loss retention time is 60 seconds.
- 5. detecting system according to claim 2, it is characterised in that the direction-finder antenna (11) is to be operated in metric wave and divide The VHF/UHF antennas of metric wave radio and television frequency range.
- 6. detecting system according to claim 2, it is characterised in that the angle value of the electronic compass (16) measurement is to spend It it is 0 degree according to due north, turn clockwise calculating, and scope is between 0~360 degree for unit.
- 7. detecting system according to claim 2, it is characterised in that the data structure of the measuring data block includes：Portable wireless receiver coding information, the coding is corresponding with portable wireless receiver, and encodes unique；Angle information, the angle information are the angle value in the field strength maximum direction measured；Positional information, the positional information are the geographical coordinate (x of positioner measurementd,yd)；Signal characteristic information, the signal characteristic include the frequency values and signal level value of unknown signal；Time of measuring information, the time of measuring information include the date and time of measurement；Data number information, the information to be formed is numbered to the data measured every time；Information of check code, include data block word length and parity check code.
- 8. detecting system according to claim 2, it is characterised in that the wireless communication apparatus (18) sends data block Form is GSM/GPRS/CDMA with TCP/IP packets or short message.
- 9. according to the detecting system described in claim any one of 1-8, it is characterised in that also including forwarding unit, by described Forwarding unit sends the measuring data block of the portable wireless signal receiver (1) to described information processing module (5).
- 10. detecting coefficient according to claim 9, it is characterised in that the forwarding unit includes cordless communication network (2), gateway processes center (3) and internet (4), the cordless communication network (2) is by the portable wireless signal The measuring data block of receiver (1) is reported and submitted to gateway processes center (3)；The gateway processes center (3) passes through internet nets Network (4) sends measuring data block to described information processing module (5).
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| CN201710970119.5A CN107765211B (en) | 2017-10-18 | 2017-10-18 | System for detecting intrusion signal of unknown broadcast television |
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| CN201710970119.5A CN107765211B (en) | 2017-10-18 | 2017-10-18 | System for detecting intrusion signal of unknown broadcast television |
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| CN107765211B CN107765211B (en) | 2021-05-28 |
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| CN107765211B (en) | 2021-05-28 |
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