CN105376856A - Detection system and cooperative communication positioning method for disaster assistance - Google Patents
Detection system and cooperative communication positioning method for disaster assistance Download PDFInfo
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- CN105376856A CN105376856A CN201510698867.3A CN201510698867A CN105376856A CN 105376856 A CN105376856 A CN 105376856A CN 201510698867 A CN201510698867 A CN 201510698867A CN 105376856 A CN105376856 A CN 105376856A
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- base station
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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
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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
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
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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
Abstract
The invention discloses a detection system and cooperative communication positioning method for disaster assistance. An emergency rescue base station establishes a rescue network, and a mobile phone is guided to connection, and initial positioning is carried out; handheld detection terminals are used for relay and real-time auxiliary positioning, communicate with the emergency rescue base station via a special communication channel, and receive induction signals and amplify the induction signals to detect a communication blind area, and the signals are amplified after detection and sent to the emergency rescue base station; the emergency rescue base station broadcasts the mobile phone information in real time, and sends the mobile phone information to the handheld detection terminals, and the handheld detection terminals extracts mobile phone signal information and self position information and uploads the information in real time; and the emergency rescue base station receives the data uploaded by all the handheld detection terminals in real time, then positions all mobile phones in the disaster area in real time and carries out broadcasting, and updates the position of the target mobile phone in real time. The method can be used to implement multi-target rescue tasks in a large range, and compared with mobile base station equipment, the cost is greatly reduced, the positioning precision is high, and the practicality is high.
Description
Technical field
The present invention relates to public safety, telecommunications and field of locating technology, particularly a kind of detection system and cooperation communicating and positioning method thereof being applicable to disaster assistance.
Background technology
Along with the develop rapidly of human civilization, the curtain yarn of universe secret is peeled from level to level.But up to nowadays, natural calamity is still difficult to prediction, surprise attack, causes massive losses difficult to the appraisal again and again.Life-and-death matter, and life is the most valuable property, and it is very urgent to search and rescue victim after disaster.All the time, rescue work is always by search and rescue equipment is kept in check: because signal is weak, interference is many, and tradition, based on the life-detection instrument inefficiency of vital sign, is difficult to the search-and-rescue work that competent disaster occasion is interior especially on a large scale; RFID, GPS, the Big Dipper, locate mode that WIFI equally accurate is higher then need victim be furnished with and open relevant device, lack actual operation, are difficult to extensive use.
Information age, mobile phone becomes the requisite daily necessities of people gradually.According to statistics, the victim of more than 80% carries with mobile phone, and in other words, mobile phone is most popular electronic product under burst fire-disaster occasion.Thus, utilize mobile phone to search and rescue to get twice the result with half the effort undoubtedly.In recent years, a kind of mode based on setting up portable emergency relief base station causes and pays close attention to widely.By improving emergency relief base station broadcast signal transmitting power or adopting jammer shielding to deposit the downstream signal of base station, the mobile phone in finite region can be made to trigger mobile phone gravity treatment and be connected to emergency relief base station; Then emergency relief base station induction mobile phone transmits, and the time obtaining mobile phone signal arrives, intensity or angle information analyzing and positioning.This is for a rescue great advantage beyond doubt, but the method faces following problem: detect multiple target mobile phones according to single portable base stations, positioning precision is very low, and investigative range is limited, inefficiency; According to limited several portable base stations combined detection location, there is interference mutually between base station, be difficult to effective cooperation, efficiency and investigative range are not high; Detect according to a lot of portable base stations, except the problems referred to above, because base station equipment is comparatively accurate, searching and rescuing cost can significantly promote; In addition, adopt multiple portable base stations to also have a large drawback, due to the blindness of searching, multiple portable base stations can cause the great wasting of resources to the detection of same mobile phone non-cooperating formula.
Summary of the invention
The problems such as the detection cost faced is high, investigative range is little, detection accuracy is low, detection blindness are searched and rescued based on mobile phone under solving disaster environment, the present invention proposes a kind of be applicable to disaster assistance detection system and cooperation communicating and positioning method, large-range monitoring and the optimization of the precision search among a small circle mode of searching and rescuing that achieves searches and rescues with satisfied reality the demand that occasion efficiently locates on a large scale.
For realizing above-mentioned requirements, technical scheme of the present invention comprises:
One, a kind of cooperation communicating and positioning method being applicable to disaster assistance:
First set up the rescue network covering disaster region by emergency relief base station, signal is brought out in transmitting makes the mobile phone in disaster region be connected to rescue network and induce it to transmit, and carries out Primary Location according to the handset emissions signal received to mobile phone; By approximated channel propagation model with deposit the coverage that communication network power etc. determines emergency relief base station network, connect the cell phone apparatus in the area of coverage.
Relaying and real-time assist location is carried out by multiple hand-held detecting terminal in disaster region, hand-held detecting terminal uses in devastated by rescue personnel is hand-held, hand-held detecting terminal is by private communication channel and emergency relief base station communication, and the signal that real-time listening target mobile phones is launched, hand-held detecting terminal receives bringing out signal and amplifying of emergency relief base station simultaneously, relaying detection is carried out to the communication blind district of emergency relief base station, and the mobile phone signal detected by communication blind district amplification is sent to emergency relief base station;
The communication information between the target mobile phones being connected to emergency relief base station and schedule information real-time broadcast and schedule information are sent to all hand-held detecting terminal in disaster region by emergency relief base station, with the signal making hand-held detecting terminal monitor target mobile phones transmitting, rescue personnel searches victim according to schedule information simultaneously; Schedule information is in order to dispatch each hand-held detecting terminal detection zones of different, and to avoid the wasting of resources and poor efficiency cooperation, real-time detection obtains more high-precision mobile phone position information; Transmitting of the communication information receiving target mobile phone of the target mobile phones that hand-held detecting terminal sends according to emergency relief base station real-time broadcast, therefrom extract mobile phone signal information, mobile phone signal information and own location information are uploaded to emergency relief base station in real time by private communication channel;
After the data that the emergency relief base station all hand-held detecting terminals of reception are uploaded in real time, all mobile phones in disaster region are relocated in real time, obtain more high-precision mobile phone position information, and mobile phone position information and schedule information are broadcasted send that each is hand-held to, obtain more high-precision mobile phone position information, hand-held detecting terminal display-object mobile phone location, rescue personnel instructs by the content hand-held detecting terminal showing information and rescues, can rescue according to schedule information, circulation real-time detection like this upgrades target mobile phones position and sends hand-held detecting terminal so that field rescue.
In described real-time detection process, emergency relief base station interval is brought out target mobile phones and is transmitted, to upgrade target mobile phones position.
Described mobile phone signal information comprises signal strength signal intensity and sense.Described target mobile phones is the mobile phone being connected to emergency relief base station.The communication information of the target mobile phones that described emergency relief base station broadcast sends comprises target mobile phones identification code (IMSI, international mobile subscriber identity) and the communication channel information such as time slot, frequency.The information such as the appointment searching target handset identity code that described schedule information refers to assign emergency relief base station, path or region, to arrange each hand-held detecting terminal cooperation detection.
Described Primary Location specifically adopts: the signal that emergency relief base station is launched according to target mobile phones adopts TDOA (time-difference-of-arrival, signal arrival time difference), SSOA (signal-strength-of-arrival, signal arrives intensity) or AOA (angle-of-arrival, direction of arrival degree) localization method target mobile phones position is tentatively obtained, to reduce Search Area or to find victim comparatively multizone; When adopting above-mentioned localization method tentatively to obtain, Primary Location position is whole rescue network coverage.
Relocating adopted localization method in real time to all mobile phones in disaster region after the data that the described emergency relief base station all hand-held detecting terminals of reception are uploaded in real time is: all position datas that emergency relief base station collects according to each hand-held detecting terminal position, utilize SSOA or AOA method to carry out many anchor points optimum position.
Two, a kind of detection system being applicable to disaster assistance:
Comprise emergency relief base station and multiple hand-held detecting terminal carrying out relaying and location, hand-held detecting terminal is by private communication channel and emergency relief base station communication, receive bringing out signal and amplifying of emergency relief base station, the communication blind district of emergency relief base station is detected, and the mobile phone signal detected by communication blind district amplification is sent to emergency relief base station; And transmitting of the communication information receiving target mobile phone of the target mobile phones that hand-held detecting terminal sends according to emergency relief base station real-time broadcast, therefrom extract mobile phone signal information, mobile phone signal information and own location information are uploaded to emergency relief base station in real time by private communication channel; Hand-held detecting terminal has display screen, display screen display-object mobile phone location and schedule information;
Described emergency relief base station, sets up the rescue network covering disaster region, and signal is brought out in transmitting makes the mobile phone in disaster region be connected to rescue network and induce it to transmit, and carries out Primary Location according to the handset emissions signal received to mobile phone; And all hand-held detecting terminal communication information real-time broadcast between the target mobile phones being connected to emergency relief base station is sent in disaster region, the signal monitored target mobile phones to make hand-held detecting terminal and launch; After the data that the emergency relief base station all hand-held detecting terminals of reception are uploaded in real time, all mobile phones in disaster region are relocated in real time, and mobile phone position information and schedule information are broadcasted send that each is hand-held to, schedule information is in order to dispatch each hand-held detecting terminal detection zones of different, to avoid the wasting of resources and poor efficiency cooperation, real-time detection obtains more high-precision mobile phone position information.
Described hand-held detecting terminal specifically can comprise the hardware modules such as antenna, duplexer, low noise amplifier, locating module, power amplifier, power supply, FPGA module and display screen.
Described emergency relief base station comprises:
Rescue network set up module, rescue network set up module launch bring out signal make mobile phone in disaster region be connected to rescue network concurrent penetrate signal;
Victim's administration module, handset identity code information (the IMSI of emergency relief base station is connected in victim's management module records disaster region, international mobile subscriber identity), and Weeding personnel, to be rescued the handset identity code information of victim and unrelated person;
Terminal communication module, terminal communication block configuration is also set up and the communication connection of hand-held detecting terminal, and comprising provides Random Access Channel, distribute dedicated broadcast channel and set up private communication channel, realizes communication each other;
Data analysis locating module, data analysis locating module obtains the positional information of target mobile phones according to the data analysis that the handset emissions signal received and hand-held detecting terminal are uploaded in real time.
Scheduler module, position is estimated according to each hand-held detecting terminal and region internal object mobile phone, schedule information is sent to dispatch to hand-held detecting terminal, comprise configuration rescue resource, specify preferential detection order and the formulation search coverage of each detecting terminal, realize detection with overall scheduling optimum optimum with precision.The distribution according to target mobile phones all in region and hand-held detecting terminal can be followed further, specify preferential detection order.In conjunction with GDOP (GeometricDilutionofPrecision, geometric dilution of precision) etc. the planning detective path of each hand-held detecting terminal or region, the optimized detection to each target mobile phones is realized with minimum resource, as detecting terminal being evenly distributed on mobile phone surrounding to be measured, avoid being distributed in the precision rapid drawdown caused in same direction.
Described hand-held detecting terminal comprises:
Trunk module, the signal of trunk module to the emergency relief base station received and mobile phone carries out amplification process and propagates;
Communication module, communication module launches private communication signal access emergency relief base station, receive the broadcast message from emergency relief base station, comprise target mobile phones to transmit the channel information at place and estimation positional information etc., monitor target mobile phones signal and upload to emergency relief base station together with believing with the position of self;
Data processing module, data processing module extracts signal strength signal intensity and the signal direction information of target mobile phones signal;
Locating module, locating module adopts the locating modules such as GPS, the Big Dipper, inertia measurement to obtain self-position, to upload to emergency relief base station evaluating objects mobile phone location;
Display module, display module shows from the target mobile phones position of emergency relief base station and schedule information on a display screen, as all target mobile phones in viewing area on map.
Described mobile phone signal information comprises signal strength signal intensity and sense, and the communication information of described target mobile phones comprises the channel information such as time slot, frequency.
Described target mobile phones is the mobile phone being connected to emergency relief base station.
The invention has the beneficial effects as follows:
The method that the present invention includes hand-hold type link terminal is searched and rescued disaster region, avoids the shortcomings such as signal disturbs mutually, cost is high, detection accuracy is low, detection efficient is low adopting a large amount of base station sounds equipment to cause.
The present invention utilizes relaying detection blind area, greatly saves equipment cost; A large amount of hand-held detecting terminal cooperation detection, and utilize emergency relief base station as service platform co-positioned, substantially increase detection accuracy; Utilize mobile phone distribution in estimation region, emergency relief base station, make search and rescue have the overall situation and see, substantially increase detection efficient.
Accompanying drawing explanation
Fig. 1 is that the hand-held detecting terminal of the present invention and emergency relief base station collaboration detect schematic diagram.
Fig. 2 is that rescue network and an embodiment of bringing out signal are set up in emergency relief base station of the present invention.
Fig. 3 is emergency relief base station of the present invention, mobile phone and the direct communication process of hand-held detecting terminal.
Fig. 4 is the configuration diagram of the hand-held detecting terminal of the present invention.
Fig. 5 is the overall flow figure of emergency relief base station and hand-held detecting terminal co-positioned.
Fig. 6 is the function relation figure between the positioning precision of embodiment and hand-held detecting terminal quantity.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As in figure the inventive method, by approximated channel propagation model with deposit the coverage that communication network power etc. determines emergency relief base station network, connect the cell phone apparatus in the area of coverage, register all users, and reject rescue personnel and the mobile phone IMSI code of the personnel that have been rescued; Emergency relief base station induction mobile phone transmits, and utilizes mobile phone signal information to carry out Primary Location to victim's mobile phone in region; Rescue personnel holds after hand-held detecting terminal enters emergency relief base station coverage area, initiatively initiates access request, after emergency relief base station receives request, launches downstream signal and sets up private communication channel with hand-held detecting terminal and be connected; In Xia Chuan region, emergency relief base station, mobile phone locating information is to hand-held detecting terminal, and rescue personnel searches and rescues according to emergency relief base station location information; Hand-held ultimate terminal is amplified base station broadcast signal and is launched, detection emergency relief base station coverage less than blind area, region as larger in loss of signal under ruins, and relay forwarding is carried out to the mobile phone feedback signal received; Hand-held detecting terminal is passed to by with under the channel information communicated between mobile phone in emergency relief base station, hand-held detecting terminal monitors the signal of handset emissions on this channel, and the mobile phone signal such as signal strength signal intensity, angle information and the positional information of self are uploaded to emergency relief base station; After receiving the signal that each hand-held detecting terminal uploads, the data analysis module of emergency relief base station positions the mobile phone in region, and positioning position information and schedule information are broadcast to each hand-held detecting terminal by private communication channel; Rescue personnel searches victim according to the locating information of base station broadcast and schedule information, and in the process, emergency relief base station interval brings out handset emissions signal, upgrades mobile phone location again, improves positioning precision.
Emergency relief base station triggers mobile phone reselection modes comprises raising power or adopts jammer to shield other base station downlink signal etc.; The induction mobile phone mode of transmitting comprises location updating, makes a phone call, sends short messages.
Emergency relief base station Primary Location refers to the signal according to handset emissions, adopts the localization methods such as TDOA, AOA, SSOA to carry out according to a preliminary estimate target mobile phones position, reduces Search Area or finds victim's comparatively multizone; Described emergency relief architecture refers to utilize the information that base station receives hand-held detecting terminal and uploads signal angle and intensity etc., and according to channel model, carry out the analysis of many anchor points optimum position to victim.
Hand-held detecting terminal of the present invention can be used as a kind of life-detection instrument based on mobile phone signal, by realizing that relaying detects, the emergency searching and rescuing function such as co-positioned and rescue scheduling of resource alternately between hand-held detecting terminal and emergency relief base station.
One is functionally, it creatively changes " mouthpiece " role of conventional repeater, hand-held detecting terminal adds the functional modules such as special-purpose terminal communication module, data processing module, locating module and display module on relay function module basis, coordinating the detection system being formed and establish the function such as aggregate relay, detection search, co-positioned, scheduling of resource and communication system with emergency relief base station further, is the novel system being applicable to disaster assistance.
Two is in working method, the present invention does not adopt the locate mode of traditional fixed anchor point, can adopt and locate based on distance relation function and optimized calculation method, utilize the dynamic realtime co-positioned mode of many anchor points sensing (can multiple anchor point kinetic measurement, co-positioned also upgrades in real time), and by the search-and-rescue work that emergency relief base station is taken the whole situation into account and plan accordingly, form novel search and rescue mode, compare traditional life survey meter and the incomparable advantage such as to possess.
Embodiments of the invention are as follows:
The present invention is put into practice to help those skilled in the art by following examples.Unless explicitly requested, otherwise independent parts and function optional, and operation order can change.In view of interlinking between 2G, 3G, 4G and even 5G etc. in communication network standard, the present invention is applicable to various situation.For ease of illustrating, the present embodiment is mainly main with GSM (GlobalSystemforMobileCommunication, global system for mobile communications).
The schematic diagram that in the embodiment of the present invention, hand-held detecting terminal and emergency relief base station collaboration detect as shown in Figure 1.Adopt three base stations in the present embodiment: dominant base, bear service centre role, its data analysis module carried is responsible for processing the data since base station, mobile phone, Hand held detection terminal; Two, from base station, cooperate and cover, and the signal message received is sent to dominant base.It is noted that two nonessential from base station, when only having dominant base to exist, do not affect enforcement of the present invention.Be assist location from base station functions one, the higher TDOA locate mode of precision can be implemented on a large scale, improve mobile phone location precision according to a preliminary estimate.; Two is better network coverages, reduces coverage hole, is connected into all mobile phones in region most possibly.
Fig. 5 gives emergency relief base station and sets up rescue network and the concrete steps of bringing out handset emissions signal.First, emergency relief base station needs to set up rescue network.When Nei Yuan base station, region is all ruined, mobile phone can be searched for all channels and find BCCH channel (BroadcastChannel, broadcast channel), and now disposed emergency relief base station, mobile phone can be connected into rescue network automatically; When also having base station to exist in region, mobile phone can be connected into and deposit base station, after now disposing emergency relief base station, need trigger mobile phone gravity treatment.Mobile phone reselection modes, a kind of information of adjacent cells that can make in emergency relief base station reading current base station BCCH signal, disguise oneself as adjacent cell, then improves power, triggers mobile phone gravity treatment, the handoff procedure in similar communication; Two is adopt jammer, and launch white noise, shield the BCCH signal of other base stations except emergency relief base station, the existing BCCH channel of mobile phone None-identified, lower meeting of having no option is connected into emergency relief base station automatically.
Be connected in region after mobile phone, emergency relief base station utilizes victim's administration module, the mobile phone IMSI code register information of timely Weeding personnel, unrelated person and the personnel that have been rescued.
Under idle pulley, mobile phone transmits hardly.Therefore, after successfully forcing mobile phone to be connected into rescue network, handset emissions signal need be brought out in emergency relief base station.Mobile phone transmits in following several situation: switching on and shutting down, dialing/receiving telephone, transmitting-receiving short message, data, services, cell reselection, location updating etc.If victim is clear-headed and when can reply, TCH channel (TrafficChannel can be set up by make a phone call or data, services etc., Traffic Channel), have signal when voice or data upload and send convenient detection, victim even can be allowed to report position.When victim cannot reply, by sending short messages, making a phone call, the mode such as location updating sets up SDCCH (StandaloneDedicatedControlChannel, Separate Dedicated Control Channel), now participate in without the need to victim, mobile phone can transmit automatically.
Fig. 3 is emergency relief base station, mobile phone and the direct communication process of hand-held detecting terminal.Emergency relief base station needs to communicate with mobile phone, handheld detecting device, therefore, except generally and mobile communication function and above-mentioned rescue network set up except module, emergency relief base station also needs
A) terminal communication module, configure and set up the communication connection with hand-held detecting terminal, frequency Random Access Channel is by default provided, palm relay equipment can send random access request in this frequency, then according to request dispatching time slot as the private communication channel communicated with, and distribute a frequency or time slot as the broadcast channel to all hand-held detecting terminals;
B) locating module, obtains the positional information of self, and GPS module can be utilized to obtain self coordinate;
C) data analysis locating module, according to the mobile phone signal information of acquisition and the positional information of hand-hold type relaying detector, positions analysis by many anchor points optimum position method to mobile phone.
D) scheduler module, estimates position according to mobile phone in each hand-held detecting terminal and region, dispatches hand-held detecting terminal, reasonable disposition rescue resource.According to the distribution of target mobile phones all in region and hand-held detecting terminal, preferential detection order is specified to be sent to hand-held detecting terminal to distribute rescue resource rationally, as preferentially searched the mobile phone of close quarters.In conjunction with GDOP (GeometricDilutionofPrecision, geometric dilution of precision) etc. the planning detective path of each hand-held detecting terminal or region, the optimized detection to each target mobile phones is realized with minimum resource, as detecting terminal being evenly distributed on mobile phone surrounding to be measured, avoid being distributed in the precision rapid drawdown caused in same direction.The schedule information that rescue personnel can send over according to scheduler module carries out work in rescue.
Above-mentioned module can adopt SDR (SoftwareDefinedRadio, software radio) method developed improves traditional base station, configuration with design peripheral hardware after, utilize programmable module (FPGA or DSP) to realize the function such as base band signal process, data analysis.On software, rescue network is increased to traditional base station and sets up module, terminal communication module, data analysis locating module etc.; Hardware increases the functional modules such as GPS module, power amplification knob or jammer.
Hand-held detecting terminal need have:
A) trunk module, after carrying out demodulation coding, then goes out through modulation amplifying emission to the signal from base station and mobile phone received;
B) communication module, set up and be connected with the private communication between emergency relief base station, launch access request to connect emergency relief network, and the broadcast message received from emergency relief base station, comprise target mobile phones to transmit the channel information at place, the estimation positional information etc. of target mobile phones, monitor target mobile phones signal, and upload the information such as the positional information of self, the signal strength signal intensity of target mobile phones or angle in real time;
C) data processing module, extracts the data such as signal strength signal intensity, angle of target mobile phones signal;
D) locating module, adopts GPS locating module to obtain self-position, to upload to emergency relief base station evaluating objects mobile phone location, utilizes inertia measuring module to follow the tracks of to improve precision simultaneously, and strengthens the location under the complex environment such as tunnel, indoor;
E) display module, the target mobile phones position passed down emergency relief base station and schedule information show on a display screen, as all target mobile phones in viewing area on map, greatly improve detection efficient.
Fig. 4 be the hand-held detecting terminal of the present invention position framework and method schematic diagram, concrete implement in the hand-held detecting terminal mode practical function that utilizes SDR to develop.On hardware, the devices such as inertia measuring module, memory, high-performance FPGA, special SIM card, power supply such as omnidirectional antenna group, low noise amplifier, filter, duplexer, power amplifier, display screen, GPS locating module, accelerometer and gyroscope can be adopted.The functions such as the communication module of hand-held detecting terminal are realized by software module, utilize the identity information of special SIM card to set up private communication channel, upload or download various information as broadcast message, access request information, mobile phone signal information, map datum, route planning information, mobile phone position information etc.
In the present embodiment, omnidirectional antenna group can be adopted, so that diversity reception, weaken multipath fading impact; Base station broadcast signal and mobile phone signal enter duplexer after antenna sets, are connected to the receiving terminal of FPGA successively after the first filter, low noise amplifier, the second filter, frequency mixer, the 3rd filter.FPGA is connected with memory, special SIM card, display screen and comprises the positioning components such as GPS module, accelerometer, gyroscope; Output another road again by duplexer after modulator, power amplifier and emission filter of FPGA is connected to antenna transmission.FPGA module realizes based on software development the base band signal process comprising demodulation coding etc., comprehensive GPS module and inertia measuring module locating information obtain the position of hand-held detecting terminal self, and realize communication module, the data processing module of above-mentioned hand-held detecting terminal, support intermediate module and display module etc.
As shown in Figure 2, emergency relief base station interval is initiated again to upgrade, and can arrange and be spaced apart 1 minute, moves update detection after enough distances until rescue personnel, to ensure to measure the independence between sample.
Because disaster field scattering object is many, cause angle location to miss by a mile, therefore in the embodiment of the present invention, adopt SSOA localization method, positioning precision is analyzed.The field test model in the many places of this enforcement basis on location, the relation between large scale propagation loss and distance is as follows:
PL
i＝PL
0+10lg((x
i-x)
2+(y
i-y)
2)+L
e+n
i
Wherein, PL
ifor hand-held detecting terminal detects the path loss obtained, PL
0range transmission source---the loss at mobile phone 1m place, (x
i, y
i) be the coordinate of hand-held detecting terminal, (x, y) is the position coordinates of target mobile phones, L
ethe difference before receive loss and Free propagation loss, i.e. excess loss, n
ifor white noise, according to actual measurement, under the environment of ruins, slow fading can describe with white noise.Adopt omnidirectional antenna group significantly to weaken the impact of the random rapid fading of small scale by space diversity in this enforcement, as auxiliary, but also frequency diversity can have been adopted to improve anti-rapid fading performance or other modes based on frequency hopping.
Due to the impact of non line of sight effect, large scale fading effect, the positioning precision of single hand-held detecting terminal misses by a mile, and thus the present invention adopts co-positioned mode.In example of the present invention, in search coverage, the mobile phone signal strength information received and own location information are uploaded to emergency relief base station by hand-held detecting terminal, and the data analysis module of base station positions mobile phone according to all information.One large advantage of field intensity location is that equipment is simple, the clock synchronization module of costliness without the need to complexity.
For many anchor points sensing mode of hand-held detecting terminal co-positioned multiple in search coverage, the present embodiment adopts the mode based on iteration SDP method (SemidefiniteProgramming, Semidefinite Programming) to be optimized target location.This method has and only has a globe optimum, avoids the interference problem of additive method.Fig. 6 is the function relation figure between positioning precision and hand-held detecting terminal quantity.Positioning precision and the theoretic limit of accuracy---CRLB (CramerRaoLowerBound, the carat Metro limit) closely, reduces search and rescue scope greatly.
The embodiment of the present invention is intermittent renewal position, and namely rescue personnel carries hand-held detecting terminal progressively near victim.In the process, new hand-held detecting terminal position and mobile phone strength information is utilized to estimate target mobile phones position again.Along with the reduction of region of search, positioning precision is also corresponding progressively to be improved.In above-mentioned example when among a small circle, second time detects, positioning precision reaches about 3m, instant invention overcomes the low precision problem only relying on architecture thus, substantially increase detection efficient and precision, compare former communicating and positioning method and there is outstanding technique effect.
In addition, in the present invention, each functional unit can be integrated in a processing module, or point stands in several separate modular; Part of module can adopt hardware mode to realize, and also can adopt software function model form.This example only provides a kind of software and hardware collocation mode preferably.
Above-described embodiment is the present invention's wherein a kind of execution mode; but embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under the change made; modify; substitute, combination, simplify; all should be the substitute mode of equivalence, all should be included in protection scope of the present invention.
Claims (10)
1. one kind is applicable to the cooperation communicating and positioning method of disaster assistance, the rescue network covering disaster region is first set up by emergency relief base station, signal is brought out in transmitting makes the mobile phone in disaster region be connected to rescue network and induce it to transmit, and according to the handset emissions signal received, Primary Location is carried out to mobile phone, it is characterized in that:
Relaying and real-time assist location is carried out by multiple hand-held detecting terminal in disaster region, hand-held detecting terminal is by private communication channel and emergency relief base station communication, hand-held detecting terminal receives bringing out signal and amplifying of emergency relief base station, the communication blind district of emergency relief base station is detected, and the mobile phone signal detected by communication blind district amplification is sent to emergency relief base station;
The communication information and schedule information real-time broadcast that are connected to the target mobile phones of emergency relief base station are sent to all hand-held detecting terminal in disaster region by emergency relief base station, with the signal making hand-held detecting terminal monitor target mobile phones transmitting; The communication information of target mobile phones that hand-held detecting terminal sends according to emergency relief base station real-time broadcast and transmitting of schedule information receiving target mobile phone, therefrom extract mobile phone signal information, mobile phone signal information and own location information are uploaded to emergency relief base station in real time by private communication channel;
After the data that the emergency relief base station all hand-held detecting terminals of reception are uploaded in real time, all mobile phones in disaster region are relocated in real time, obtain more high-precision mobile phone position information and broadcast sends that each is hand-held to, obtain more high-precision mobile phone position information, circulation real-time detection like this upgrades target mobile phones position and sends hand-held detecting terminal so that field rescue.
2. a kind of cooperation communicating and positioning method being applicable to disaster assistance according to claim 1, is characterized in that: in described real-time detection process, and emergency relief base station interval is brought out target mobile phones and transmitted, to upgrade target mobile phones position.
3. a kind of cooperation communicating and positioning method being applicable to disaster assistance according to claim 1, is characterized in that: described mobile phone signal information comprises signal strength signal intensity and sense.
4. a kind of cooperation communicating and positioning method being applicable to disaster assistance according to claim 1, is characterized in that: the communication information of the target mobile phones that described emergency relief base station broadcast sends comprises target mobile phones identification code and the communication channel information such as time slot, frequency.
5. a kind of cooperation communicating and positioning method being applicable to disaster assistance according to claim 1, is characterized in that: described Primary Location specifically adopts: emergency relief base station adopts the localization method of TDOA, SSOA or AOA tentatively to obtain target mobile phones position according to the signal that target mobile phones is launched; When adopting above-mentioned localization method tentatively to obtain, Primary Location position is whole rescue network coverage.
6. a kind of cooperation communicating and positioning method being applicable to disaster assistance according to claim 1, it is characterized in that: described emergency relief base station relocates adopted localization method in real time to all mobile phones in disaster region after receiving the data that all hand-held detecting terminals upload in real time and is: all position datas that emergency relief base station collects according to each hand-held detecting terminal position and mobile phone signal information, utilize SSOA or AOA method to carry out many anchor points optimum position.
7., for implementing the claims a kind of detection system being applicable to disaster assistance of 1 ~ 6 arbitrary described method, comprising emergency relief base station, it is characterized in that:
Also comprise multiple hand-held detecting terminal carrying out relaying and location, by private communication channel and emergency relief base station communication, receive bringing out signal and amplifying of emergency relief base station, the communication blind district of emergency relief base station is detected, and the mobile phone signal detected by communication blind district amplification is sent to emergency relief base station; And the communication information of target mobile phones that hand-held detecting terminal sends according to emergency relief base station real-time broadcast and transmitting of schedule information receiving target mobile phone, therefrom extract mobile phone signal information, mobile phone signal information and own location information are uploaded to emergency relief base station in real time by private communication channel; Hand-held detecting terminal has display screen, display screen display-object mobile phone location and schedule information;
Described emergency relief base station, sets up the rescue network covering disaster region, and signal is brought out in transmitting makes the mobile phone in disaster region be connected to rescue network and induce it to transmit, and carries out Primary Location according to the handset emissions signal received to mobile phone; And all hand-held detecting terminal communication information real-time broadcast between the target mobile phones being connected to emergency relief base station is sent in disaster region, the signal monitored target mobile phones to make hand-held detecting terminal and launch; After the data that the emergency relief base station all hand-held detecting terminals of reception are uploaded in real time, all mobile phones in disaster region are relocated in real time, obtain more high-precision mobile phone position information, and mobile phone position information and schedule information are broadcasted send that each is hand-held to, schedule information is in order to dispatch each hand-held detecting terminal detection zones of different, and real-time detection obtains more high-precision mobile phone position information.
8. a kind of detection system being applicable to disaster assistance according to claim 7, is characterized in that: described emergency relief base station comprises:
Rescue network set up module, rescue network set up module launch bring out signal make mobile phone in disaster region be connected to rescue network concurrent penetrate signal;
Victim's administration module, is connected to the handset identity code information of emergency relief base station in victim's management module records disaster region, and Weeding personnel, to be rescued the handset identity code information of victim and unrelated person;
Terminal communication module, terminal communication block configuration is also set up and the communication connection of hand-held detecting terminal, and comprising provides Random Access Channel, distribute dedicated broadcast channel and set up private communication channel, realizes communication each other;
Data analysis locating module, data analysis locating module obtains the positional information of target mobile phones according to the data analysis that the handset emissions signal received and hand-held detecting terminal are uploaded in real time;
Scheduler module, estimates position according to each hand-held detecting terminal and region internal object mobile phone, sends schedule information to dispatch to hand-held detecting terminal.
9. a kind of detection system being applicable to disaster assistance according to claim 7, is characterized in that: described hand-held detecting terminal comprises:
Trunk module, the signal of trunk module to the emergency relief base station received and mobile phone carries out amplification process and propagates;
Communication module, communication module launches private communication signal access emergency relief base station, receive the broadcast message from emergency relief base station, comprise target mobile phones to transmit the channel information at place and estimation positional information etc., monitor target mobile phones signal and also upload to emergency relief base station together with the positional information of self;
Data processing module, data processing module extracts signal strength signal intensity and the signal direction information of target mobile phones signal;
Locating module, locating module adopts the locating modules such as GPS, the Big Dipper, inertia measurement to obtain self-position;
Display module, display module shows from the target mobile phones position of emergency relief base station and schedule information on a display screen.
10. a kind of detection system being applicable to disaster assistance according to claim 7, it is characterized in that: described mobile phone signal information comprises signal strength signal intensity and sense, the communication information of the target mobile phones that described emergency relief base station broadcast sends comprises target mobile phones identification code and the communication channel information such as time slot, frequency, and described schedule information comprises the information such as target mobile phones identification code that needs search, path or region to cooperate detect in order to arrange each hand-held detecting terminal.
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