CN201294639Y

CN201294639Y - Single base station wireless locating device

Info

Publication number: CN201294639Y
Application number: CNU2008201551459U
Authority: CN
Inventors: 石强; 彭兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2009-08-19
Anticipated expiration: 2018-11-10

Abstract

The utility model discloses a single base station wireless positioning device, which comprises a radio-frequency antenna module, a broad band low noise amplifier, a multiplier, an automatic gain control circuit, a signal demodulator, an automatic frequency control circuit, a carrier signal generator, a cross correlator, a distance-measuring unit, a signal intensity indicator, an angle-measuring system, a positioning information processor and a positioning result information display module. The single base station wireless positioning device can position a mobile station through a single base station. The angle-measuring system in the single base station wireless positioning device measures the information of electric wave arrival angle, and the distance information between the mobile station and a base station is commonly converted by the parameters measured by the distance-measuring unit and the single intensity indictor. The single base station wireless positioning device solves the shortcomings of using a plurality of base stations to do wireless positioning in an existing scheme, and has the advantages of low production cost, convenient use and high positioning precision.

Description

Single base station radio positioner

Technical field

The utility model relates to the wireless positioning field in the radio communication, and a kind of single base station radio positioner particularly is provided.

Background technology

Wireless location technology is used widely technical having obtained of military and civilian.Current quick increase along with data service and multimedia service, people increase day by day to the demand based on the new business of wireless location technology, especially at the communication environment of complexity, in environment such as airport hall, exhibition room, warehouse, supermarket, library, underground parking, mine, usually need to determine portable terminal or its holder, facility and article in indoor positional information, these have all promoted the further investigation to wireless location technology.Simultaneously, one of benchmark service that accurate localization information become the new generation of wireless communication system is provided to the user, wireless location technology also has been applied to aspects such as emergency relief, auto navigation, intelligent transportation, Team Management, with reference to the actual demand of numerous industries, the development prospect of wireless location technology and positioning service will be very wide.

But be subjected to the restriction of conditions such as positioning time, positioning accuracy and complicated indoor environment, fairly perfect location technology also can't be utilized at present well.Many location technology solutions, as the ultrasonic wave location technology,, wireless location technology such as REID, super-broadband tech, WLAN, light track and localization technology, A-GPS (agps system) location technology, Bluetooth technology and infrared technology will increase new hardware on portable terminal, this will bring adverse influence to the size and the cost of mobile radio station.Utilizing the cellular network of Modern Mobile Communications Systems that navigation, positional information are provided is a kind of new locate mode.It is received simultaneously by a plurality of base stations and detects the signal that moves as send, and by network travelling carriage is positioned estimation according to the parameter that measures.It is by measure to arrive a series of fixing or carry the mobile base station and the information-related signal of location of mobile station is determined can provide inexpensive positioning service by location of mobile station.

Yet, when utilizing cellular communications networks that travelling carriage is carried out wireless location, existing method is subjected to the influence of various interference easily, also needs the base station more than three could realize the location, and position error is bigger under most environment, and positioning accuracy is not high and cost is very high.

Summary of the invention

The utility model proposes a kind of positioning accuracy height at the deficiencies in the prior art, single base station radio positioner with low cost.The utility model utilizes the power of received signal, and the accurate location that metrical informations such as the electric wave time of advent and angle of arrival realize travelling carriage is applicable to various localizing environments, is a kind of high accuracy practicability location technology.

The technical solution of the utility model is:

A kind of single base station radio positioner comprises radio frequency antenna module, wideband low noise amplifier, multiplier, automatic gain control circuit, demodulator of PM signal PM, automatic frequency controller, carrier signal generator, cross-correlator, range cells, S meter, angle measuring system, locating information processor and locating result information display module.It is characterized in that each part mentioned above is linked to be a treatment system jointly: described radio frequency antenna module receives the input that is connected described wideband low noise amplifier LNA, and described radio frequency antenna module receives the input that also is connected to angle measuring system simultaneously.The output of LNA is connected to the first input end of multiplier, and carrier signal generator is connected second input of described multiplier.The output of described multiplier is connected to the input of automatic gain control circuit AGC.First output of described AGC is connected the input of S meter RSSI, and second output of described AGC is connected to the input of demodulator of PM signal PM.First output of described demodulator of PM signal PM is connected the input of automatic frequency control circuit AFC, and second output of demodulator of PM signal PM is connected to cross-correlator.The output of described AFC is connected to the input of carrier signal generator.The output of cross-correlator connects the input of range cells.Described locating information processor has three inputs, connects the output of RSSI successively, the output of TOA range cells and the output of angle measuring system.The output of described locating information processor is connected to the input of locating result information display module.

Described radio-frequency antenna receives to be delivered to broadband LNA with electric wave signal behind the electric wave signal that is launched by travelling carriage and carries out low noise filtering.The LNA that is used for filtering in the described device is the two-stage cascade circuit for being the cascade connection type low noise amplifier of load with the active inductance, and it comprises resistance R 1, R2, R3, R4, R5, R6, R7, inductance L 1, L2, L3, L4, L5, L6, capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10 and three NPN type triode NPN1, NPN2, NPN3.The end of capacitor C 1～C7 wherein, R5, an end and the NPN1 of R7, NPN3 penetrates end ground connection.Described LNA circuit NPN1, R1～R3, C1～C8, L1～L4 form the first order circuit of described LNA, are used for the inhibition to noise and high-order harmonic wave component, NPN2, NPN3, R4～R7, C9～C10, L5～L6 constitutes second level circuit, is used for the level of signal is amplified.

Simultaneously, the signal that receives is admitted to described angle measuring system and measures the angle of arrival of electric wave to indicate the locality of travelling carriage by angle measuring system.For a base station, the AOA of angle measuring system measures can draw specific travelling carriage place direction.Through the local carrier of the electric wave signal of LNA and carrier signal generator generation by the multiplier processing of multiplying each other.Then, AGC measures the signal level of input signal demodulator, and the model that signal level is controlled at requirement by feedback control circuit with in.Demodulator of PM signal PM is realized the demodulation to the AGC output signal, and the signal part after the demodulation exports AFC to carrier signal generator is carried out FREQUENCY CONTROL, with the operating state of automatic adjusting carrier signal generator, makes its output signal satisfy the requirement of multiplying each other.Another part signal of cross-correlator after to demodulation carries out related operation, with obtain travelling carriage and this device synchronously.After signal process cross-correlator was synchronous, range cells recorded the arrival time delay of electric wave, and further is converted to the TOA range information.S meter RSSI measures the signal power loss contour around each base station in advance, to realize the location technology with measured signal power.Travelling carriage is informed its power that transmits of base station with sufficiently high precision, and S meter RSSI calculates loss in the signals transmission by the signal power that receives again, and then extrapolates the distance estimations value of travelling carriage to the base station.The locating information processor carries out COMPREHENSIVE CALCULATING to the ranging information of S meter RSSI output, the AOA metrical information of angle measuring system output and the TOA range information of range cells.The handling process of locating information processor is: get the average path distance value as mobile to base station of RSSI ranging information and TOA ranging information, the locality that draws in conjunction with travelling carriage AOA information carries out the more specific location information that simple calculations has just drawn travelling carriage then.Finally, the more specific location information of travelling carriage shows intuitively by the locating result information display module.

Described single base station radio positioner is oriented portable terminal from the radio wave signal that reaches the base station that receives exact position is in conjunction with the power of the angle of arrival of measuring, received signal and electric wave time of advent, the accurate location of realizing travelling carriage.

A kind of single base station radio positioner, described device is installed in the communication receiving system of a base station, be used for travelling carriage is carried out wireless location, it is characterized in that: radio frequency antenna module adopts the GPS RADIONOVA radio frequency antenna module of Britain Antenova company, the multiplier of the multiplier of the AD834 model of multiplier employing ADI company or the MC1495 model of motorola inc, automatic gain control circuit AGC adopts the AD603 device of U.S. ADI company, demodulator of PM signal PM and automatic frequency control circuit AFC adopt the MC145162 model integrated chip of a Motorola Inc. to realize, carrier signal generator adopts the N9310A signal generator of Agilent company, cross-correlator adopts TMC2032 model correlator, range cells adopts Italian INFRA microwave radar to test the speed/distance measuring sensor, angle measuring system adopts the Schaevitz series angle transducer/angle measuring system of York instrument company, S meter adopts the AD8309 device of ADI company, locating information processor adopting CS6079 computing chip, locating result information display module adopt the safe HTG9626A model LCD that shows Science and Technology Ltd. of flood.

The utility model compared with prior art, have following conspicuous high-lighting characteristics and remarkable advantage: described device uses single base station just can position travelling carriage, and the utility model solved in the existing scheme and to use a plurality of base stations to carry out the defective of wireless location, and has advantage with low cost, easy to use and that positioning accuracy is high.

The beneficial effects of the utility model are, and are simple in structure, can obtain better locating effect with lower cost and easier equipment, can make positioning service obtain using more widely.

Description of drawings

Fig. 1 is a structure drawing of device of the present utility model;

Fig. 2 is the LNA circuit diagram in the utility model device;

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment the utility model is further specified:

Referring to Fig. 1, a kind of single base station radio positioner comprises radio frequency antenna module 1, wideband low noise amplifier 2, multiplier 3, automatic gain control circuit 4, demodulator of PM signal PM 5, automatic frequency controller 6, carrier signal generator 7, cross-correlator 8, range cells 9, S meter 10, angle measuring system 11, locating information processor 12 and locating result information display module 13.It is characterized in that each part mentioned above is linked to be a treatment system jointly: described radio frequency antenna module 1 receives the input that is connected described wideband low noise amplifier LNA 2, and described radio-frequency antenna 1 receives the input that also is connected to angle measuring system 11 simultaneously.The output of LNA 2 is connected to the first input end of multiplier 3, and carrier signal generator 7 is connected second input of described multiplier 3.The output of described multiplier 3 is connected to the input of automatic gain control circuit AGC 4.First output of described AGC4 is connected the input of S meter RSSI 10, and second output of described AGC 4 is connected to the input of demodulator of PM signal PM 5.First output of described demodulator of PM signal PM 5 is connected the input of automatic frequency control circuit AFC 6, and second output of demodulator of PM signal PM 5 is connected to cross-correlator 8.The output of described AFC 6 is connected to the input of carrier signal generator 7.The output of cross-correlator 8 connects the input of range cells 9.Described locating information processor 12 has three inputs, connects the output of RSSI 10 successively, the output of the output of range cells 9 and angle measuring system 11.The output of described locating information processor 12 is connected to the input of locating result information display module 13.

Described radio-frequency antenna 1 receives to be delivered to broadband LNA 2 with electric wave signal behind the electric wave signal that is launched by travelling carriage and carries out low noise filtering.The LNA2 that is used for filtering in the described device is the two-stage cascade circuit for being the cascade connection type low noise amplifier of load with the active inductance.Simultaneously, the signal that receives is admitted to described angle measuring system 11 and measures the angle of arrival of electric wave to indicate the locality of travelling carriage.Through the local carrier of the electric wave signal of LNA2 and carrier signal generator 7 generations by multiplier 3 processing of multiplying each other.Then, AGC 4 measures the signal level of input signal demodulators 5, and the model that signal level is controlled at requirement by feedback control circuit with in.The demodulation that demodulator of PM signal PM 5 is realized the AGC output signal, the signal part after the demodulation exports 6 pairs of carrier signal generators of AFC to and carries out FREQUENCY CONTROL, with the operating state of automatic adjusting carrier signal generator 7, makes its output signal satisfy the requirement of multiplying each other.Another part signal after 8 pairs of demodulation of cross-correlator carries out related operation, to obtain the synchronous of travelling carriage and this device.Signal through cross-correlator 8 synchronously after, range cells 9 records the arrival time delay of electric wave, and further is converted to the TOA range information.S meter RSSI 10 measures the signal power loss contour around each base station in advance, to realize the location technology with measured signal power.Travelling carriage is informed its power that transmits of base station with sufficiently high precision, and S meter RSSI 10 calculates loss in the signals transmission by the signal power that receives again, and then extrapolates the distance estimations value of travelling carriage to the base station.The AOA metrical information of the ranging information of 12 couples of S meter RSSI of locating information processor, 10 outputs, angle measuring system 11 outputs and the TOA range information of range cells 9 carry out COMPREHENSIVE CALCULATING.The handling process of locating information processor 12 is: get the average path distance value as mobile to base station of RSSI ranging information and TOA ranging information, the locality that draws in conjunction with travelling carriage AOA information carries out the more specific location information that simple calculations has just drawn travelling carriage then.Finally, the more specific location information of travelling carriage shows intuitively by locating result information display module 13.

A kind of single base station radio positioner, be used for travelling carriage is carried out wireless location, it selects for use each module model can be: radio frequency antenna module 1 adopts the GPS RADIONOVA radio frequency antenna module of Britain Antenova company, the multiplier of the AD834 model of multiplier 3 employing ADI companies or the MC1495 model of motorola inc, automatic gain control circuit AGC 4 adopts the AD603 device of U.S. ADI company, demodulator of PM signal PM 5 and automatic frequency control circuit AFC 6 adopt the MC145162 model integrated chip of a Motorola Inc. to realize, carrier signal generator 7 adopts the N9310A signal generator of Agilent company, cross-correlator 8 adopts TMC2032 model correlator, range cells 9 adopts Italian INFRA microwave radar to test the speed/distance measuring sensor, angle measuring system 11 adopts the Schaevitz series angle transducer/angle measuring system of York instrument company, S meter 10 adopts the AD8309 device of ADI company, locating information processor 12 adopts the CS6079 computing chip, and locating result information display module 13 adopts the safe HTG9626A model LCD that shows Science and Technology Ltd. of flood.

LNA 2 circuit in the utility model device comprise resistance R 1 as shown in Figure 2, R2, R3, R4, R5, R6, R7, inductance L 1, L2, L3, L4, L5, L6, capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10 and three NPN type triode NPN1, NPN2, NPN3.The end of capacitor C 1～C7 in the described circuit, R5, an end and the NPN1 of R7, ground connection is held in penetrating of NPN3.Described LNA 2 is the two-stage cascade circuit for being the cascade connection type low noise amplifier of load with the active inductance.NPN1, R1～R3, C1～C8, L1～L4 form the first order circuit of described LNA2, are used for the inhibition to noise and high-order harmonic wave component, NPN2, NPN3, R4～R7, C9～C10, L5～L6 constitutes second level circuit, is used for the level of signal is amplified.

In sum, the utility model uses single base station to orient the accurate position of travelling carriage from the radio wave signal that receives Putting, is the practical location technology of a kind of high accuracy. Described apparatus structure is simple, is applicable to various localizing environments, have cost low, Low and the quite high advantage of positioning accuracy of energy consumption can make positioning service obtain using more widely.

Claims

1, a kind of single base station radio positioner, it comprises radio frequency antenna module (1), wideband low noise amplifier (2), multiplier (3), automatic gain control circuit (4), demodulator of PM signal PM (5), automatic frequency controller (6), carrier signal generator (7), cross-correlator (8), range cells (9), S meter (10), angle measuring system (11), locating information processor (12) and locating result information display module (13).It is characterized in that each part mentioned above is linked to be a treatment system jointly: described radio frequency antenna module (1) receives the input that is connected described wideband low noise amplifier LNA (Low Noise Amplifier) (2), and described radio-frequency antenna (1) receives the input that also is connected to angle measuring system (11) simultaneously.The output of LNA (2) is connected to the first input end of multiplier (3), and carrier signal generator (7) is connected second input of described multiplier (3).The output of described multiplier (3) is connected to the input of automatic gain control circuit AGC (Automatic Gain Control) (4).First output of described AGC (4) is connected the input of S meter RSSI (Received Signal StrengthIndication) (10), and second output of described AGC (4) is connected to the input of demodulator of PM signal PM (5).First output of described demodulator of PM signal PM (5) is connected the input of automatic frequency control circuit AFC (Automatic FrequencyControl) (6), and second output of demodulator of PM signal PM (5) is connected to cross-correlator (8).The output of described AFC (6) is connected to the input of carrier signal generator (7).The output of cross-correlator (8) connects the input of range cells (9), and described range cells (9) is also referred to as TOA (Time Of Arrival) range cells.Described locating information processor (12) has three inputs, connects the output of RSSI (10) successively, the output of the output of range cells (9) and angle measuring system (11).The output of described locating information processor (12) is connected to the input of locating result information display module (13).

2, single base station radio positioner as claimed in claim 1, it is characterized in that: the exact position of from the radio wave signal that reaches the base station that receives, orienting portable terminal, in conjunction with the angle of arrival AOA (Angle Of Arrival), the power and the electric wave TOA time of advent of received signal that measure, realize the accurate location of travelling carriage.

3, single base station radio positioner as claimed in claim 1 is characterized in that: the LNA in the described device (2) is the two-stage cascade circuit for being the cascade connection type low noise amplifier of load with the active inductance.Described LNA (2) circuit comprises resistance R 1, R2, R3, R4, R5, R6, R7, inductance L 1, L2, L3, L4, L5, L6, capacitor C 1, C2, C3, C4, C5, C6, C7, C8, C9, C10 and three NPN type triode NPN1, NPN2, NPN3.The end of capacitor C 1～C7 wherein, R5, an end and the NPN1 of R7, NPN3 penetrates end ground connection.NPN1, R1～R3, C1～C8, L1～L4 form the first order circuit of described LNA (2), are used for the inhibition to noise and high-order harmonic wave component, NPN2, NPN3, R4～R7, C9～C10, L5～L6 constitutes second level circuit, is used for the level of signal is amplified.

4, a kind of single base station radio positioner, described device is installed in the communication receiving system of a base station, be used for travelling carriage is carried out wireless location, it is characterized in that: radio frequency antenna module (1) adopts the GPS RADIONOVA radio frequency antenna module of Britain Antenova company, the multiplier of the AD834 model of multiplier (3) employing ADI company or the MC1495 model of motorola inc, automatic gain control circuit AGC (4) adopts the AD603 device of U.S. ADI company, demodulator of PM signal PM (5) and automatic frequency control circuit AFC (6) adopt the MC145162 model integrated chip of a Motorola Inc. to realize, carrier signal generator (7) adopts the N9310A signal generator of Agilent company, cross-correlator (8) adopts TMC2032 model correlator, range cells (9) adopts Italian INFRA microwave radar to test the speed/distance measuring sensor, angle measuring system (11) adopts the Schaevitz series angle transducer/angle measuring system of York instrument company, S meter (10) adopts the AD8309 device of ADI company, locating information processor (12) adopts the CS6079 computing chip, and locating result information display module (13) adopts the safe HTG9626A model LCD that shows Science and Technology Ltd. of flood.