CN106792871A - Main passive mobile terminal detection alignment system and its method for work for combining - Google Patents
Main passive mobile terminal detection alignment system and its method for work for combining Download PDFInfo
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- CN106792871A CN106792871A CN201610941046.2A CN201610941046A CN106792871A CN 106792871 A CN106792871 A CN 106792871A CN 201610941046 A CN201610941046 A CN 201610941046A CN 106792871 A CN106792871 A CN 106792871A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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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
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
Alignment system and its method of work are detected the present invention relates to a kind of mobile terminal for leading passive combination.The system includes 1 omnidirectional's active transmitting antenna and energized process and launch channel；4 ~ 8 orientations dumb antenna and reception processing channels；Digital processing part；Operation control terminal；The system can intelligent search analyzing network circumstance, adaptively adapt to all kinds of mobile terminal targets, can by signaling information interact realize to functions such as the analysis identification of all kinds of mobile terminal targets and DF and locations.And improve the confidence level of reaction speed and measurement result, can synchronously realize measuring the identity code identification of mobile terminal with position of orientation and estimate, detection is greatly improved with direction finding speed, can support that detection positioner is detected and DF and location between traveling to destination mobile terminal, and using radio frequency analog and base-band digital Treatment Integrating Design Technology technology, realize the microminaturization and low-power consumption of device.
Description
Technical field
The invention belongs to mobile Internet message area, it is related at the mobile Internet information transmission technology and signal and information
Reason technology, specifically related to a kind of mobile terminal detection alignment system and its method of work for leading passive combination.
Background technology
With the development of informationized society, the owning amount of various types of digital mobile terminal is increased rapidly, digital mobile terminal
Effective utilization and its a series of problems for bringing it is increasingly notable.Being networked by digital mobile terminal for having carries out normal information biography
It is defeated, it is some to position specific objective using extraordinary digital mobile terminal（Old man, child, vehicle, toy etc.）Position or motion
Route, so there is difference in different society individuality or social sector or field to different types of mobile terminal detection positioning
Demand, with the further development of broadband wireless network technology and microelectric technique product, this demand can further amplify.
All kinds of digital mobile terminals carry out mesh information transmission using different customizing messages forms and signal system.At present
Generally the signaling information alternating transmission mode using extended frequency hopping signal system and based on a certain specific protocol form realizes networking, its
In each mobile subscriber terminal must have specific electronic identity code information, and distribute the resources such as corresponding time slot or code channel
Its normal information exchange can be ensured, these have established technical foundation for the different mobile subscriber terminal of detection.Detect simultaneously
Position all kinds of mobile subscriber terminals, it is necessary to so that detection means can adapt to the network environment and signal of each correspondence mobile terminal
Environment, and can be added thereto with the identity of manager, thus it is required to be generated and transmitted by signal system therewith and letter
Form identical radiofrequency signal is ceased to obtain the approval of all kinds of mobile terminals.Having hair must have receipts, can complete information exchange.
Hair is active active mode, and receipts then belong to passive passive working method, and both need the time-frequency coordinating and unifying and adapt to
The transceiving format standard of all kinds of mobile terminals, so that having certain adaptive ability and may be selected to set function.
The weak point of current research both at home and abroad：According to the survey, mobile terminal detection positioning both domestic and external is root at present
System uses the active working method of single channel, small part to use single channel or the pure passive type working method of multichannel mostly.Dan Xin
The active working method in road is needed to realize orienting by directional rotating antenna, and the rotation of directional aerial is driven by head, when
Effect property is poor and can not support that target works between advancing.Single channel or the pure passive type working method of multichannel need passively after sale
The information transmitting of mobile subscriber terminal, and duration is uncontrollable, thus operating efficiency and reliability be not high.
The content of the invention
Alignment system and its method of work, its pin are detected it is an object of the present invention to provide a kind of mobile terminal for leading passive combination
To defect in background technology, according to adapting to development of new techniques and informationized society integrated use, to solve under complex environment
It is basic effectively to use, it is proposed that combined from the passive active passive of master and using the treatment of 4 ~ 8 multiple channel reception amplitude-comparison direction findings
Angle, identity code detection and the treatment model of DF and location are carried out to mobile subscriber terminal.With new simulation and numeral
Integrated device part, has carried out comprehensive Design, and calculate with high performance software by wide band radio-frequency and high-speed digital video camera hardware
Law technology is guarantee so that rapidly and accurately realize detection, identity code identification, the side to various types of mobile subscriber terminal target
The functions such as position/position measurement estimation become a reality, and the matched with devices develops adaptation notebook, PDA, smart mobile phone etc.
The interactive software of kinds of platform, is easy to the actually used demand of different occasions.
In order to realize the above object the technical solution adopted by the present invention is：1 omnidirectional's active transmitting antenna and energized process
With launch channel；
4 ~ 8 orientations dumb antenna and reception processing channels, and each orientation dumb antenna and reception processing channel
The radio frequency reception frequency conversion of analog portion and the base band high-speed figure Treatment Integrating Design Technology of numerical portion is respectively adopted；
Digital processing part：The digit driver being made up of FPGA and DSP and D/A, it is embedded for each wireless in FPGA and DSP
The identical modulation of network Mobile user terminal produces the portion with coding and information format, the digital stimulus signal of signaling protocol form
Point, realization is interacted with the signaling information of various types of mobile subscriber terminal, and be made up of multi-channel A/D and FPGA and High Performance DSP
High-performance digital signal processor, being embedded in FPGA and DSP can carry out feature ginseng for each wireless network mobile subscriber terminal
Number extraction, digital demodulation decoding, Coded Analysis, protocol analysis and identity code identification；
Operation control terminal：Using notebook computer or PDA or smart mobile phone as operation control terminal, by manipulating digital processing list
Unit realizes detection, identity code identification and direction finding to the searching analysis of network environment and on this basis to mobile subscriber terminal
Positioning etc..
The invention also discloses a kind of method of work that alignment system is detected based on the main passive mobile terminal for combining, including
Following steps：
1）Based on the configuration feature of the main passive mobile terminal detection alignment system searching analysis surrounding network first for combining, and root
The selective running parameter of device is set automatically according to the configuration feature of network；
2）Active launch channel automatically generates the signaling similar with objective network network control signaling according to the running parameter for setting
Information is in the way of omnidirectional radiation to ambient radiation；
3）Destination mobile terminal in sphere of action is interacted with the control signaling of network-based control signaling and device simultaneously,
Made decisions according to its own decision rule for setting；
4）The relevant response that detection means is transmitted according to target terminal in the decision rule of all kinds of mobile terminals and interaction
Information analysis determine the identity code of each mobile terminal, and are set adaptively the preferential answering strategy to destination mobile terminal；
5）The at the same time dumb treatment of each reception processing channel of orientation dumb antenna and reception processing channel is simultaneously
The response message of each mobile terminal is parsed, in this, as the foundation of target classification identification, in the process real-time continuous ground acquisition
The up field intensity parameter of each individual goal；
6）The field intensity parameter of the different target mobile terminal obtained to orientation dumb antenna and reception processing channel compares
Value is calculated, and main lobe characteristic with reference to directional receiving antenna carries out correlated fitting treatment, finally gives that target is relative to detect positioning
The orientation of device.
The technical effects of the invention are that：The system can intelligent search analyzing network circumstance, be automatically obtained to wireless network
The despreading of network signal/solution jump, digital demodulation, Coded Analysis, data frame structure analysis, signaling protocol parsing etc., adaptively fit
All kinds of mobile terminal targets are answered, the analysis identification and direction finding realized to all kinds of mobile terminal targets can be interacted by signaling information
The functions such as positioning.Master is passive, and active passive is combined, and master is passive, and active passive is combined, and can improve reaction speed and measurement is tied
The confidence level of fruit；The treatment of 4 ~ 8 channel dumbs is newly increased, the identity code identification to mobile terminal and side can be synchronously realized
Position position measurement is estimated；Because detection and direction finding speed are greatly improved（By needed originally several minutes only need to till now less than
1 second）, it would be preferable to support detection positioner is detected and DF and location between traveling to destination mobile terminal；Using radio frequency mould
Intend and base-band digital Treatment Integrating Design Technology technology, realize the microminaturization and low-power consumption of device.
Brief description of the drawings
Fig. 1 is the main passive mobile terminal detection alignment system process structure design drawing for combining；
Fig. 2 is active active module emission control flow chart；
Fig. 3 is passive passive type module reception processing flow chart；
Fig. 4 is the main passive mobile terminal detection whole machine control flow chart of alignment system for combining；
Fig. 5 is the main passive mobile terminal detection whole machine information interaction diagrams of alignment system for combining；
Fig. 6 is the main passive mobile terminal detection positioning system hardware composition frame chart for combining.
Specific embodiment
Referring to the drawings, a kind of mobile terminal detection alignment system for leading passive combination, it is characterised in that including：
1 omnidirectional's active transmitting antenna and energized process and launch channel；
4 ~ 8 orientations dumb antenna and reception processing channels, and each orientation dumb antenna and reception processing channel
The radio frequency reception frequency conversion of analog portion and the base band high-speed figure Treatment Integrating Design Technology of numerical portion is respectively adopted；
Digital processing part：The digit driver being made up of FPGA and DSP and D/A, it is embedded for each wireless in FPGA and DSP
The identical modulation of network Mobile user terminal produces the portion with coding and information format, the digital stimulus signal of signaling protocol form
Point, realization is interacted with the signaling information of various types of mobile subscriber terminal, and be made up of multi-channel A/D and FPGA and High Performance DSP
High-performance digital signal processor, being embedded in FPGA and DSP can carry out feature ginseng for each wireless network mobile subscriber terminal
Number extraction, digital demodulation decoding, Coded Analysis, protocol analysis and identity code identification；
Operation control terminal：Using notebook computer or PDA or smart mobile phone as operation control terminal, by manipulating digital processing list
Unit realizes detection, identity code identification and direction finding to the searching analysis of network environment and on this basis to mobile subscriber terminal
Positioning etc.；
Preferably, the quantity of described orientation dumb antenna and reception processing channel is 4/8, the orientation dumb
Antenna and reception processing channel are arranged in orientation broad-band reception antenna group.
Mainly included based on above-mentioned technical proposal preferred scheme of the invention：
Antenna：Omni-directional wideband transmitting antenna, 4/8 array element orientation broad-band reception antenna group；It is arranged at load car roof（Such as luggage
Frame）, or supported with elevating lever.
Radio-frequency channel unit：Wide band radio-frequency launch channel 1（Containing wide-band radio frequency power amplifier）, wide band radio-frequency reception change
Frequency and digital processing channel 1, wide band radio-frequency receive channel 4/8（Each wide band radio-frequency receives channel requirements has identical width
Frequency characteristic）, transceiving radio frequency channel uses microminaturization design, and 4/8 wide band radio-frequency receive channel with it is follow-up
Multi-channel digital process part carries out integrated single board design, is allowed in structure more succinct reliable, and performance is high and power consumption is also low
。
Digital processing：The good digital driver being made up of high-performance FPGA and High Performance DSP and high-speed d/a,
FPGA and DSP embed the identical modulation and coding and information format, signaling protocol for different networks mobile subscriber terminal
The digital stimulus signal of form produces software, can realize being interacted with the signaling information of various types of mobile subscriber terminal；By multichannel
The high-performance digital signal processor of high-speed a/d and high-performance FPGA and High Performance DSP composition, embeds in FPGA and DSP and is directed to
Different networks mobile subscriber terminal can carry out characteristic parameter extraction, digital demodulation decoding, Coded Analysis, protocol analysis with
And identity code identification function.
Operation control terminal：Can be soft by manipulating treatment using notebook computer, PDA, smart mobile phone etc. as operation control terminal
Part realizes detection, identity code identification and direction finding to the searching analysis of network environment and on this basis to mobile subscriber terminal
Positioning etc..Operation control terminal can be manipulated by bluetooth, WiFi etc. with the digital terminal of Transmit-Receive Unit.
The further prioritization scheme of the program, will to 4/8 uniformity of passive directional receiving antenna main lobe direction characteristic
Ask.The active digital actuation is 1 with the quantity of radio-frequency transmissions channel, if using bimodulus or three mould equipment,
Required active digital actuation is 2 or 3 with the quantity of radio-frequency transmissions channel.The active numeral of each described
Encouraging can also process channel by the supporting 1 corresponding dumb based on omnidirectional antenna again with radio-frequency transmissions channel.The survey
Can be on the basis of traditional amplitude-comparison direction finding algorithm plus the treatment model of data correlated fitting to location algorithm.The positioning
Both can have been estimated by field intensity direction finding value and according to radio wave environment propagation attenuation model, or moved by detection means
The Bearing value of dynamic process carries out the mobile direction finding crossing location in single station.
The invention also discloses a kind of method of work that alignment system is detected based on the main passive mobile terminal for combining, it is special
Levy and be：Comprise the following steps：
1）Based on the configuration feature of the main passive mobile terminal detection alignment system searching analysis surrounding network first for combining, and root
The selective running parameter of device is set automatically according to the configuration feature of network；
2）Active launch channel automatically generates the signaling similar with objective network network control signaling according to the running parameter for setting
Information is in the way of omnidirectional radiation to ambient radiation；
3）Destination mobile terminal in sphere of action is interacted with the control signaling of network-based control signaling and device simultaneously,
Made decisions according to its own decision rule for setting；
4）The relevant response that detection means is transmitted according to target terminal in the decision rule of all kinds of mobile terminals and interaction
Information analysis determine the identity code of each mobile terminal, and are set adaptively the preferential answering strategy to destination mobile terminal；
5）The at the same time dumb treatment of each reception processing channel of orientation dumb antenna and reception processing channel is simultaneously
The response message of each mobile terminal is parsed, in this, as the foundation of target classification identification, in the process real-time continuous ground acquisition
The up field intensity parameter of each individual goal；
6）The field intensity parameter of the different target mobile terminal obtained to orientation dumb antenna and reception processing channel compares
Value is calculated, and main lobe characteristic with reference to directional receiving antenna carries out correlated fitting treatment, finally gives that target is relative to detect positioning
The orientation of device.
Method for optimizing based on the above method is comprised the following steps that：
1）Based on the configuration feature of the main passive mobile terminal detection positioner searching analysis surrounding network first for combining, and root
The selective running parameter of device is set automatically according to the configuration feature of network；
2）Active launch channel automatically generates the signaling similar with objective network network control signaling according to the running parameter for setting
Information is in the way of omnidirectional radiation to ambient radiation；
3）In sphere of action（Sensitivity reception processing scope）Interior destination mobile terminal simultaneously with network-based control signaling and dress
The control signaling put is interacted, and is made decisions according to its own decision rule for setting；
4）The relevant response that detection means is transmitted according to target terminal in the decision rule of all kinds of mobile terminals and interaction
Information analysis determine the identity code of each mobile terminal, and are set adaptively the preferential answering strategy to destination mobile terminal；
5）At the same time dumb is processed and parses each shifting each reception processing channel of the channel reception processing unit of broadband 4/8
The response message of dynamic terminal, in this, as the foundation of target classification identification, obtains each individual mesh to real-time continuous in the process
The up field intensity parameter of target（Including return value and measured value）；
6）The field intensity parameter of the different target mobile terminal obtained to the channel reception processing unit of broadband 4/8 carries out ratio calculation,
And combine the main lobe characteristic of directional receiving antenna（Can be obtained by measurement in advance）Correlated fitting treatment is carried out, mesh is finally given
The orientation of the relative detection positioner of mark, and target general location is moved by environmental electromagnetic wave transmission attenuation characteristic estimating.
Used as the further prioritization scheme of the method, when using car is carried as platform, carrying car can enter between traveling
Row target detection and azimuthal measurement, and by digital map navigation software schemed in real time on mark and draw, thus given on navigation map
Go out the band of position of mobile target.
Technical scheme is described in detail below in conjunction with accompanying drawing：
A kind of mobile terminal detection alignment system for leading passive combination, it implements technology can be divided into hardware and software part.
Wherein radio-frequency receiving-transmitting treatment integrated technique of the applying of hardware based on software radio framework, specific as follows：
1st, the radio-frequency transmissions technology based on software radio framework include wide band radio-frequency amplify, wideband digital up-conversion and
High-speed figure pumping signal is produced, and completes specific coding mode, data frame structure, protocol format, signal system and Modulation Types
The generation of signal, and by transmitting antenna to space radiation；
2nd, the reception processing technology based on software radio framework includes wide band radio-frequency reception, wideband digital down coversion and number
Word sampling processing, realizes the signal system and Modulation Types analysis identification, coded system, data frame to wideband received signal
Structure, protocol format analysis and parsing etc.；
3rd, integrated technique is processed using the radio-frequency receiving-transmitting based on software radio framework, it is real under the driving of functional software
Now with neighboring area in the range of all kinds of mobile terminals Signalling exchange；
4th, at the same time, the control passive passive type reception processing unit of 4/8 channel is carried out in master unit with various types of mobile terminal
While Signalling exchange, the up signaling-information to mobile terminal carries out radio frequency reception, despreading/solution jump, digital demodulation, coding point
The treatment such as analysis, data frame structure analysis, signaling protocol parsing, target separation and identification, single goal field intensity parameter measurement；
5th, by each mobile terminal of the passive passive type reception processing unit output of 4/8 channel, corresponding field intensity is believed in time
Breath, the azimuthal measurement to each mobile terminal is realized using amplitude-comparison direction finding algorithm model, using radio wave propagation loss model, is estimated
Count the positional distance of mobile terminal.
Software Realization Technique is specific as follows：
1st, under the operating system environments of Windows 7, with the programmed environments of VS 2010 and the database environments of ORACLE 10, exploitation
The application of the present apparatus and management software；
2nd, upper computer software is mainly constructed to peripheral wireless network resource information searching analysis with parsing and to making respectively
The analysis interacted with mobile terminal signaling information in regional extent and management platform；
3rd, the despreading of Target Wireless signal/solution jump, digital demodulation, Coded Analysis, data frame structure analysis, signaling protocol parsing
Realized by the embedded software of bottom FPGA and DSP Deng part；
4th, by ORACLE data base administrations, realize to processing functions such as target data storage, inquiry and comprehensive statistics.
Below by taking the wireless network mobile terminal using spread spectrum communication system as an example, process is implemented by of the invention
It is described below：
Overall system architecture schematic diagram as shown in Fig. 6, the technical system that the present apparatus is combined based on active/passive, its feature
For be described below active Signalling exchange, passive detection, multichannel amplitude-comparison direction finding positioning etc. three layer model in the present apparatus
Implement and apply.
First, active Signalling exchange
The main passive mobile terminal detection alignment system for combining detects periphery first according to mobile terminal target type to be detected
The affiliated wireless network parameter of environment, generates and objective network signal system and Modulation Types, coded system, data on this basis
The radiofrequency signal that the parameters such as frame structure, signaling format are matched completely.
The radiofrequency signal is after radio-frequency power amplifies by omnidirectional antenna to space radiation.
Mobile terminal in the range of surrounding enviroment medium sensitivity reception processing detects the main passive mobile terminal inspection for combining
The radiofrequency signal of alignment system radiation is surveyed, by treatment, cognition to network rings such as despreading, digital demodulation, decoding, solution signaling protocols
There is the presence of the signaling-information in border.
The signal enhancing of the passive mobile terminal detection alignment system radiation for combining of master is to certain thresholding, or movement is eventually
The radiofrequency signal of the spatial network radiofrequency signal opposite sets radiation that termination is received is weak, then the preferential answering device carries out signaling friendship
Mutually.
In signalling interactive process, the radio frequency reception channel of the main passive mobile terminal detection alignment system for combining receives each
The radiofrequency signal of mobile terminal radiating, is processed by despreading, digital demodulation, decoding, signaling resolution etc., and acquisition represents target movement
The specific coding information of terminal identity, is achieved in separating different mobile terminals, that is, realize the purpose of detection identification.
To detect that the different mobile terminal that identifies carries out list display, if without further need, no longer with
Each mobile terminal carries out Signalling exchange.If being found that the mobile terminal of specific objective in the mobile terminal that detection is identified,
The destination mobile terminal can then be selected, further carry out therewith deeper into signaling information interaction.
Selection carries out Signalling exchange to specific objective mobile terminal, mainly for passive detection module provides longer effect
Time, typically constantly report signal strength to destination mobile terminal hair（Signal quality）Control instruction, be allowed to constantly report
The radiofrequency field intensity values that the signalling radio signal of its own measurement apparatus radiation is obtained, the field intensity value is also that next step is moved to target
Terminal carries out the reference frame of amplitude-comparison direction finding and location estimation.
2nd, passive detection
Passive detection is the premise for realizing active active radiation to carry out Signalling exchange.On the one hand passive detection is detection periphery
Wireless network environment in regional extent, on the other hand be detect each network internal storage of neighboring area mobile terminal.
Passive detection to periphery region network environment is premiere feature.By dual-mode antenna and radio frequency duplexer, by width
Band radio frequency reception frequency conversion and digital processing channel wireless network signal present in space is carried out wide band radio-frequency reception, despreading,
The treatment such as digital demodulation, Coded Analysis, data frame structure analysis, signaling resolution, determines the type and network parameter of wireless network.
On the basis of wireless network type and network parameter is detected, further detection belongs to the mobile end of the network
End, now needs to detect the small-power radiofrequency signal of mobile terminal radiating, belongs to the uplink signal of wireless network.
Include numerous mobile terminal signals in the up-link of wireless network, it is necessary to by each individual mobile terminal area
Separate, the passive detection to uplink signal is mainly response of each mobile terminal of detection to network signal signal, and knows
The special code sequence of its individual identity is not described.
The uplink signal of wireless network generally uses identical communication system and Modulation Types with down link signal,
The industry such as coded system, data frame structure and signaling format are similar, and these are required for carrying out self adaptation during passive detection
Treatment.
The passive detection in this stage is realized that shared omnidirectional dual-mode antenna is double by radio frequency by transceiving integrated unit module
Work device is realized the differentiation of high-isolation by transceiver channel, requires that radio frequency duplexer can reach the isolation of more than 70dB here,
To ensure transmitting and receive and can work simultaneously, it is independent of each other.
3rd, multichannel amplitude-comparison direction finding positioning
The present apparatus carries out DF and location using 4/8 channel ratio width method.
If using 4 channel amplitude-comparison direction findings, using direction just to four pairs of directional aerials of the four corners of the world（Device is fixed
In outdoor）, or vehicle is directed at using direction（Device is loaded on the vehicle）Four pairs of directional aerials all around.
If using 8 channel amplitude-comparison direction findings, using direction just to the four corners of the world and it is positive and negative 45 °, positive and negative 135 °
Eight pairs of directional aerials（Device is fixed on outdoor）, or vehicle is directed at using direction（Device is loaded on the vehicle）All around and
Offset all around each 45 ° of eight pairs of directional aerials.
Using 4 channel amplitude-comparison direction findings, it is desirable to four wide band radio-frequency reception processing multi-channel operation characteristics（Particularly amplitude-
Frequency response characteristic）Unanimously, 4 four wide band radio-frequency reception processing channel synchronizations work, while from spacing wireless network signal
The middle uplink signal for receiving each mobile terminal, analyzed by despreading, digital demodulation, Coded Analysis, data frame structure and
Signaling information parse, isolate the different each individual mobile terminal of identity code, then extract specific objective mobile terminal or
The radio field intensity parameter of each individual mobile terminal of person.
4 wide band radio-frequency reception processing channels are carried to same specific objective mobile terminal or same individual mobile terminal
The radio field intensity parameter for taking is calculated according to amplitude-comparison direction finding algorithm, then can obtain specific objective mobile terminal or a certain
Orientation residing for the relative detection positioner of individual mobile terminal.
Using 8 channel amplitude-comparison direction findings, it is desirable to eight wide band radio-frequency reception processing multi-channel operation characteristics（Particularly amplitude-
Frequency response characteristic）Unanimously, 8 four wide band radio-frequency reception processing channel synchronizations work, while from spacing wireless network signal
The middle uplink signal for receiving each mobile terminal, analyzed by despreading, digital demodulation, Coded Analysis, data frame structure and
Signaling information parse, isolate the different each individual mobile terminal of identity code, then extract specific objective mobile terminal or
The radio field intensity parameter of each individual mobile terminal of person.
8 wide band radio-frequency reception processing channels are carried to same specific objective mobile terminal or same individual mobile terminal
The radio field intensity parameter for taking is calculated according to amplitude-comparison direction finding algorithm, then can obtain specific objective mobile terminal or a certain
Orientation residing for the relative detection positioner of individual mobile terminal.
According to the field intensity parameter that specific objective mobile terminal or a certain individual mobile terminal are measured, passed using correspondence electric wave
Broadcast the transmission attenuation model of environment, and destination mobile terminal radiation radio-frequency power or detection means launch channel radiation
Radio-frequency power, it is possible thereby to estimate mobile terminal from detection positioner it is general with a distance from.
Relative to 4 channel amplitude-comparison direction findings, the advantage of 8 channel amplitude-comparison direction findings is mainly antenna direction characteristic can be more
Sharp or antenna main lobe can be with narrower, thus one side antenna gain is higher, can improve measurement distance, on the other hand compared with
Narrow main lobe can improve direction finding precision.
In order to further improve direction finding precision, be increased in the amplitude-comparison direction finding algorithm of device and join the main lobe of antenna
Count up to during site preparation is placed to algorithm and be weighted the Fitting Calculation.
There is the main lobe beam shape of directional receiving antenna in the product information that antenna producer provides, but simply refer to, it is actual
Main lobe parameter it is conditional be preferably to be measured to microwave dark room, no microwave dark room condition can be on spacious ground
Domain space carries out field survey and obtains with calibrated radiation source.
It is worth noting that, either 4 channel amplitude-comparison direction finding, or 8 channel amplitude-comparison direction findings, most important of which is that
By way of passive passive reception processing, Signalling exchange is carried out in main transceiver channel and each individual mobile terminal of the present apparatus
During, correct each individual mobile terminal of Division identification, and accurately extract its field intensity parameter.So in the course of the work, needing
It is synchronous with the main transceiver channel of the present apparatus.
Field intensity parameter measurement can measure the RF signal strength that the present apparatus is launched by controlling mobile terminal, and send
Measurement report and receive parsing and obtain.Can also be that the uplink signal field intensity that direct measurement destination mobile terminal is launched is obtained
Arrive.The former stablizes relatively, and the latter's measuring speed is faster.
Positioning result to destination mobile terminal can be obtained in real time, thus support mobile unit in motion process to week
Mobile terminal in surrounding environment enters Mobile state DF and location.In motion process is measured, measurement in real time obtains target and carries car relatively
Orientation, add carry car itself GPS location data, it is possible on the electronic map（Or navigation map）Mark and draw target in real time
The rhumb line intersecting area of mobile terminal, the region is exactly the possible position estimation point of destination mobile terminal, and the method compares
Estimation by radio wave propagation loss model is more accurate.
Claims (3)
1. a kind of mobile terminal for leading passive combination detects alignment system, it is characterised in that including：
1 omnidirectional's active transmitting antenna and energized process and launch channel；
4 ~ 8 orientations dumb antenna and reception processing channels, and each orientation dumb antenna and reception processing channel
The radio frequency reception frequency conversion of analog portion and the base band high-speed figure Treatment Integrating Design Technology of numerical portion is respectively adopted；
Digital processing part：The digit driver being made up of FPGA and DSP and D/A, it is embedded for each wireless in FPGA and DSP
The identical modulation of network Mobile user terminal produces the portion with coding and information format, the digital stimulus signal of signaling protocol form
Point, realization is interacted with the signaling information of various types of mobile subscriber terminal, and be made up of multi-channel A/D and FPGA and High Performance DSP
High-performance digital signal processor, being embedded in FPGA and DSP can carry out feature ginseng for each wireless network mobile subscriber terminal
Number extraction, digital demodulation decoding, Coded Analysis, protocol analysis and identity code identification；
Operation control terminal：Using notebook computer or PDA or smart mobile phone as operation control terminal, by manipulating digital processing list
Unit realizes detection, identity code identification and direction finding to the searching analysis of network environment and on this basis to mobile subscriber terminal
Positioning etc..
2. a kind of mobile terminal for leading passive combination according to claim 1 detects alignment system, it is characterised in that：It is described
Orientation dumb antenna and the quantity of reception processing channel be 4/8, the orientation dumb antenna and reception processing are believed
Road is arranged in orientation broad-band reception antenna group.
3. a kind of mobile terminal based on main passive combination detects the method for work of alignment system, it is characterised in that：Including as follows
Step：
1）Based on the configuration feature of the main passive mobile terminal detection alignment system searching analysis surrounding network first for combining, and root
The selective running parameter of device is set automatically according to the configuration feature of network；
2）Active launch channel automatically generates the signaling similar with objective network network control signaling according to the running parameter for setting
Information is in the way of omnidirectional radiation to ambient radiation；
3）Destination mobile terminal in sphere of action is interacted with the control signaling of network-based control signaling and device simultaneously,
Made decisions according to its own decision rule for setting；
4）The relevant response that detection means is transmitted according to target terminal in the decision rule of all kinds of mobile terminals and interaction
Information analysis determine the identity code of each mobile terminal, and are set adaptively the preferential answering strategy to destination mobile terminal；
5）The at the same time dumb treatment of each reception processing channel of orientation dumb antenna and reception processing channel is simultaneously
The response message of each mobile terminal is parsed, in this, as the foundation of target classification identification, in the process real-time continuous ground acquisition
The up field intensity parameter of each individual goal；
6）The field intensity parameter of the different target mobile terminal obtained to orientation dumb antenna and reception processing channel compares
Value is calculated, and main lobe characteristic with reference to directional receiving antenna carries out correlated fitting treatment, finally gives that target is relative to detect positioning
The orientation of device.
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| CN112055408A (en) * | 2019-06-06 | 2020-12-08 | 广州慧睿思通信息科技有限公司 | Terminal positioning method and direction finding system |
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