CN109819516A - A kind of television broadcasting signal forwarding localization method and device - Google Patents
A kind of television broadcasting signal forwarding localization method and device Download PDFInfo
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- CN109819516A CN109819516A CN201910191299.6A CN201910191299A CN109819516A CN 109819516 A CN109819516 A CN 109819516A CN 201910191299 A CN201910191299 A CN 201910191299A CN 109819516 A CN109819516 A CN 109819516A
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Abstract
The invention discloses a kind of television broadcasting signal forwarding localization method and devices, positioning is realized by building television broadcasting signal repeater system, the described method includes: being positioned using original and forwarding television broadcasting signal, one or more television broadcasting signal repeater station is set up outside building, when setting up a repeater station, by the signal for forwarding at least two television broadcasting transmitting stations, utilize the exact position of each transmitting station, at least two-way television broadcasting signal is received with receiver again, the propagation time difference of every road signal is obtained by relevant treatment, namely TDOA (Time Difference of Arrival) measured value, it is final to realize positioning.The present invention television broadcasting signal that can be used alone positions, without the auxiliary by other external sort algorithm signals, and without carrying out a large amount of measurement in advance before positioning, it can be achieved that positioning in real time, orientation range is wide, practical.
Description
Technical field
The present invention relates to technical field of navigation and positioning, and in particular to a kind of television broadcasting signal forwarding localization method and dress
It sets.
Background technique
Global Navigation Satellite System (Global Navigation Satellite System, GNSS) has been able at present
The information such as accurate position, speed, time are provided for user, are widely applied in many fields.But be similar to it is indoor,
Under the complex environments such as jungle, valley, avenue, GNSS signal is hindered, signal power by deep fades, these because
Element causes common GNSS receiver acquisition and tracking not position normally, therefore is unable to satisfy the dual-use demand of a part.
With the increase of navigator fix demand for services, it is necessary to find a kind of side that mode can be positioned when GNSS can not be positioned
Method.
It is wireless that digital television signal (Digital Television, DTV) based on terrestrial broadcasting belongs to a kind of non-navigational
Electric signal can find out TV signal tower transmitting station and mesh by measuring the propagation time of digital television signal broadcast data frame
The distance between receiver user value is marked, and then is positioned.However there are clock mistakes between each launching tower when due to measurement
It is influenced in difference and transmission process by many factors such as multi-path jammings, causes finally to determine the television transmitting station come and mesh
It is larger to mark the distance between receiver user error.
The existing localization method based on frequency modulation broadcasting (Frequency Modulation, FM) signal is mainly that fingerprint is fixed
Position method, this method pass through in power (the Received Signal Strength for specifying region to acquire specified reference point in advance
Indication, RSSI) information, constructs the fingerprint database in region and is trained in conjunction with the coordinate of reference point；Then, it acquires
The RSSI finger print information and database of the FM signal of current location carry out pattern match, extrapolate current position coordinates.But
Existing this scheme needs are largely measured in advance, and the RSSI information of signal changes over time, and positioning accuracy is low, practical
Property is poor.
Summary of the invention
In view of the above problems, the present invention provides a kind of television broadcasting signal forwarding localization method and device, one is created
The mechanism that kind is positioned using television broadcasting external sort algorithm signal can effectively overcome lacking for existing radio and television location technology
Point.
The technical solution adopted by the present invention are as follows:
In a first aspect, the present invention provides a kind of television broadcasting signals to forward localization method, by building television broadcasting letter
Number repeater system realizes positioning, which comprises
It is positioned using original and forwarding television broadcasting signal.The present invention consider outside building set up one or
Multiple television broadcasting signal repeater stations.When setting up a repeater station, the present invention passes through forwarding at least two television broadcastings transmitting
The signal stood receives at least two-way television broadcasting signal using the exact position of each transmitting station, then with receiver, at correlation
Reason obtains the propagation time difference of every road signal, that is, TDOA (Time Difference of Arrival) measured value, finally
Realize positioning.
Second aspect, the present invention provides television broadcasting signals to forward positioning device, by building forwarding outside building
Station is positioned.
First, the whole composition of forwarding device includes television broadcasting signal receiving antenna, transponder (wideband frequency conversion equipment)
And television broadcasting forward signal transmitting antenna three parts composition, receiving antenna receive the television broadcasting electricity in free space
Magnetostatic wave signal, by the radio signal transmission received to transponder, original tv is broadcasted the signal in whole section of bandwidth by transponder
Wideband frequency-conversion processing is carried out, transmitting antenna again radiates the signal after frequency conversion, so as to complete the overall process of signal forwarding.
Second, television broadcasting signal receiving device is by receiving antenna, frequency conversion equipment and signal collecting device three parts group
At receiving antenna is divided into two clock of television broadcasting original signal receiving antenna and television broadcasting forward signal receiving antenna, antenna
The two paths of signals received is respectively connected to two frequency conversion equipments, effect be original signal and forward signal are arranged in it is same
In frequency, convenience is provided for follow-up signal processing.The effect for acquiring equipment is that two paths of signals is acquired and is stored simultaneously, first
Signal progress down coversion, modulus (AD) are converted into digital baseband signal, data acquisition function is realized by analog input card, then
Host computer is sent data to, realizes the storage of digital baseband signal, then TDOA measured value is obtained by relevant treatment.
The advantages of the present invention over the prior art are that:
(1) present invention television broadcasting signal that can be used alone positions, without by the auxiliary of other external sort algorithm signals
It helps, and without carrying out a large amount of measurement in advance before positioning, it can be achieved that positioning in real time.
(2) present invention can be blocked under equal complex environments, under indoor environment, even under underground environment in city and be can be achieved
Positioning, orientation range is wide, practical.
(3) positioning accuracy of the present invention when being positioned using only television broadcasting signal is higher, and positioning accuracy is theoretical
Value can be within 10m.
(4) present invention is realized by forwarding mechanism, and it is poor to calculate propagation delay using coherent detection processing method, can be disappeared
Except in forwarding positioning system between different base station the problem of clocking error.
Detailed description of the invention
Fig. 1 is the forwarding positioning system operation schematic diagram using a repeater station；
Fig. 2 is the forwarding positioning system operation schematic diagram using Liang Ge repeater station；
Fig. 3 is television broadcasting signal forwarding device composition；
Fig. 4 is television broadcasting signal receiving device composition；
Fig. 5 is forwarding positioning system work flow diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
In a first aspect, the present invention provides a kind of television broadcasting signals to forward localization method, by building television broadcasting letter
Number repeater system realizes positioning, which comprises
It is positioned using original and forwarding television broadcasting signal.The present invention consider outside building set up one or
Multiple television broadcasting signal repeater stations.When setting up a repeater station, the present invention passes through forwarding at least two television broadcastings transmitting
The signal stood receives at least two-way television broadcasting signal using the exact position of each transmitting station, then with receiver, at correlation
Reason obtains the propagation time difference of every road signal, that is, TDOA (Time Difference of Arrival) measured value, finally
Realize positioning.
Concrete scheme figure of the present invention as shown in Figure 1, under this scheme system group become two television broadcasting signal launching towers (but
Be not limited to two), a television broadcasting signal repeater station and receiving station.
When setting up two or more repeater stations, the present invention uses at least one television broadcasting transmitting station signal, passes through
Forwarding and reception acquisition two paths of signals propagation delay are poor, then carry out positioning calculation process similar to above and realize positioning.
As shown in Fig. 2, under this scheme the group of system become a television broadcasting signal launching tower, two (but be not limited to two
It is a) television broadcasting signal repeater station and receiving station.
Below by taking one repeater station of erection, using two television broadcasting launching towers as an example, positioning principle of the invention is introduced.
In television broadcasting signal forwarding positioning system, the position of television broadcasting signal launching tower and repeater station is known, receiving station
Position be unknown, if can determine the actual position of certain moment two television broadcasting launching towers and repeater station, then known TV
The signal transmission delay that broadcast singal reaches receiver and the through receiver of television broadcasting signal through forwarding device is poor, then can push away
Television broadcasting signal launching tower is calculated to receiver, forwarding device to the actual distance between receiver, the position of receiver can
It is intersected at a point and is obtained by two groups of hyperbolas, it is final that positioning can be achieved.
The reason of present invention is positioned using forwarding mechanism is described below.First, television broadcasting signal is by audio, figure
Picture and vision signal are modulated on the carrier wave of different frequency, and with the difference of broadcasted content, television broadcasting signal is whithin a period of time
Belong to stationary random signal.To obtain TDOA measured value by the method for coherent detection, need in receiver end duplication and certain
Television broadcasting station's identical random signal within certain period can play the role of signal replication using repeater station.Second, sharp
The effect for generating two paths of signals propagation delay difference can be played with repeater station, it is available when known to delay inequality (TDOA measured value)
TODA hyperbola positioning method is positioned.Third, the effect of television broadcasting repeater station is to broadcast the original tv received
The frequency of signal is moved, then by aerial radiation to free space, whole process simultaneously has not been changed original tv broadcast singal
Essence.Assuming that if the change that repeater station does not carry out frequency directly emits, frequency and the original signal frequency phase of forward signal
Together, then the propagation and reception that will affect two paths of signals, cause interfering with each other for two paths of signals.Therefore, the present invention uses repeater-transmitter
System is positioned, it is possible to prevente effectively from the above problem.
Second aspect, the present invention provides television broadcasting signals to forward positioning device, by building forwarding outside building
Station is positioned.
Television broadcasting signal repeater system is built to be made of following two key component: first is that the research of forwarding device with set
Meter, second is that the research and design of receiving device.
First, the whole composition of forwarding device includes television broadcasting signal receiving antenna, transponder (wideband frequency conversion equipment)
And television broadcasting forward signal transmitting antenna three parts composition, as shown in figure 3, receiving antenna receives in free space
Television broadcasting electromagnetic wave signal, by the radio signal transmission received to transponder, original tv is broadcasted whole section of band by transponder
Signal in width carries out wideband frequency-conversion processing, and transmitting antenna again radiates the signal after frequency conversion, turns so as to complete signal
The overall process of hair.
Television broadcasting signal forwarding device has the characteristics that low-power consumption, small in size, structure is simple, and guarantees that television broadcasting is believed
Number quality is unaffected in repeating process or the impacted very little of institute, while being also contemplated that various factors is to fixed in repeating process
The influence of position precision, takes countermeasure to weaken or eliminate the influence of these factors.The present invention sets television broadcasting signal forwarding
Standby design content specifically includes that
The selection of television broadcasting signal forwarding device position.The present invention uses one or more repeater stations, at least two electricity
Depending on broadcast signal transmission tower and a receiving station.When the distribution of repeater station, receiving station and television broadcasting signal launching tower is constituted
When different geometry, positioning accuracy factor values will receive influence, impact to the positioning accuracy of whole system.
The selection of television broadcasting signal forwarding device frequency.The effect of television broadcasting signal forwarding device is by television broadcasting
The frequency of signal is moved, and whole section of radiofrequency signal in television broadcasting signal bandwidth that antenna receives is moved some by it
White spaces, and have not been changed original tv broadcast singal essence.Therefore, frequency and forwarding positioning system after forwarding device is moved
Applicable scene it is related.
The design of television broadcasting signal forwarding device time delay.In forwarding device include several frequency mixers and filter, it
Cascade after time delay to control in a certain range, it is excessive, positioning accuracy can be had an impact.
The design of television broadcasting signal forwarding device gain.The design of forwarding device gain depend on forwarding device position with
The relative distance of receiver location, it is to be ensured that the forward signal after forwarding device transmitting can be received at receiver.In addition, turning
The design for sending out equipment gain is also related with forwarding positioning system coverage area.
Second, television broadcasting signal receiving device is by receiving antenna, frequency conversion equipment and signal collecting device three parts group
At as shown in Figure 4.Receiving antenna is divided into television broadcasting original signal receiving antenna and television broadcasting forward signal receiving antenna
Two clocks, the two paths of signals that antenna receives are respectively connected to two frequency conversion equipments, and effect is to pacify original signal and forward signal
It comes in the same frequency, provides convenience for follow-up signal processing.The effect for acquiring equipment is simultaneously to adopt two paths of signals
Signal progress down coversion, modulus (AD) are first converted into digital baseband signal, realize data by analog input card by collection and storage
Function is acquired, then sends data to host computer, realizes the storage of digital baseband signal, then TDOA is obtained by relevant treatment and is surveyed
Magnitude.
Original tv broadcast singal and forwarding television broadcasting signal are acquired by television broadcasting signal receiving device simultaneously.
Even if television broadcasting signal reaches forwarding device, then from forwarding in the case where not considering forwarding device additional time delay itself
Equipment arrives receiver user again.This signals transmission is actually a broken line, and television broadcasting signal directly reaches use
Corresponding family receiver is straight line, due to the sum of triangle both sides centainly be greater than third side, so forward signal relative to
It is always lagged for television broadcasting direct signal.Therefore wide for the TV from the same channel in receiver user
Signal is broadcast, direct signal and forward signal need using two different receiving channels while carrying out signal acquisition, then carry out
The acquisition of TDOA measured value and the process of positioning calculation, it is final that positioning can be achieved.
Overall plan flow chart is as shown in Figure 5:
First, the present invention first debugs the receiver of laboratory from research and development, so that receiver is had while is received and adopts
Collect the function of two paths of signals.
Second, the exact position of available television broadcast signal transmission tower and outdoor erection repeater station is determined, as positioning
The known prior information of algorithm.
Third, for the application scenarios of television broadcasting signal forwarding positioning system, to the original of television broadcasting signal transponder
Begin to receive signal frequency and forward signal frequency is designed.
4th, after the design and test for completing first three step, the reality of entire positioning system is just completed under actual scene
Now with assessment.Television broadcasting original signal and forward signal are acquired simultaneously at the receiving end of system, is calculated by relevant treatment
The propagation delay for locating two paths of signals is poor, inputs, passes through using the position and delay inequality of known launching tower and repeater station as system
Hyperbola location algorithm obtains positioning result.
Claims (2)
1. a kind of television broadcasting signal forwards localization method, it is characterised in that: real by building television broadcasting signal repeater system
Now position, which comprises using it is original and forwarding television broadcasting signal positioned, outside building set up one or
The multiple television broadcasting signal repeater stations of person pass through at least two television broadcasting transmitting stations of forwarding when setting up a repeater station
Signal receives at least two-way television broadcasting signal using the exact position of each transmitting station, then with receiver, is obtained by relevant treatment
The propagation time difference of the road get Mei signal, that is, TDOA (Time Difference of Arrival) measured value, it is final to realize
Positioning.
2. a kind of television broadcasting signal forwards positioning device, it is characterised in that: determined by building repeater station outside building
Position, which includes: television broadcasting signal forwarding device and television broadcasting signal receiving device, television broadcasting signal forwarding device
Including television broadcasting signal receiving antenna, transponder and television broadcasting forward signal transmitting antenna, receiving antenna reception is come from
Television broadcasting electromagnetic wave signal in free space, by the radio signal transmission received to transponder, transponder is by original electricity
Wideband frequency-conversion processing is carried out depending on the signal in whole section of bandwidth of broadcast, transmitting antenna again radiates the signal after frequency conversion, thus
Complete the overall process of signal forwarding；Television broadcasting signal receiving device includes receiving antenna, frequency conversion equipment and signal acquisition
Equipment, receiving antenna are divided into two clock of television broadcasting original signal receiving antenna and television broadcasting forward signal receiving antenna, day
The two paths of signals that line receives is respectively connected to two frequency conversion equipments, effect be original signal and forward signal are arranged in it is same
In a frequency, convenience is provided for follow-up signal processing；The effect for acquiring equipment is that two paths of signals is acquired and is stored simultaneously,
Signal progress down coversion, modulus (AD) are first converted into digital baseband signal, data acquisition function is realized by analog input card,
Host computer is sent data to again, realizes the storage of digital baseband signal, then TDOA measured value is obtained by relevant treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910191299.6A CN109819516A (en) | 2019-03-13 | 2019-03-13 | A kind of television broadcasting signal forwarding localization method and device |
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| CN201910191299.6A CN109819516A (en) | 2019-03-13 | 2019-03-13 | A kind of television broadcasting signal forwarding localization method and device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060064725A1 (en) * | 2004-09-22 | 2006-03-23 | Rosum Corporation | Pilot acquisition and local clock calibration with reduced MIPS |
| CN101799530A (en) * | 2009-12-29 | 2010-08-11 | 广东广联电子科技有限公司 | Wireless indoor location method and system thereof |
| CN104181501A (en) * | 2014-08-21 | 2014-12-03 | 上海交通大学 | Positioning system and positioning method based on ground digital radio and television signals |
| US9213083B1 (en) * | 2013-09-05 | 2015-12-15 | The United States Of America As Represented By The Secretary Of The Navy | Hyperbolic positioning method using broadcast digital television signals and monitor receiver ranging |
| CN106772456A (en) * | 2017-01-12 | 2017-05-31 | 清华大学 | A kind of relay type based on multi-user Cooperation cheats the localization method in source |
| CN106886034A (en) * | 2017-01-12 | 2017-06-23 | 清华大学 | A kind of relay type based on single user multiple spot cheats the localization method in source |
| CN108519586A (en) * | 2018-04-03 | 2018-09-11 | 芜湖泰贺知信息***有限公司 | A kind of distribution Passive Radar System and its object localization method |
-
2019
- 2019-03-13 CN CN201910191299.6A patent/CN109819516A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060064725A1 (en) * | 2004-09-22 | 2006-03-23 | Rosum Corporation | Pilot acquisition and local clock calibration with reduced MIPS |
| CN101799530A (en) * | 2009-12-29 | 2010-08-11 | 广东广联电子科技有限公司 | Wireless indoor location method and system thereof |
| US9213083B1 (en) * | 2013-09-05 | 2015-12-15 | The United States Of America As Represented By The Secretary Of The Navy | Hyperbolic positioning method using broadcast digital television signals and monitor receiver ranging |
| CN104181501A (en) * | 2014-08-21 | 2014-12-03 | 上海交通大学 | Positioning system and positioning method based on ground digital radio and television signals |
| CN106772456A (en) * | 2017-01-12 | 2017-05-31 | 清华大学 | A kind of relay type based on multi-user Cooperation cheats the localization method in source |
| CN106886034A (en) * | 2017-01-12 | 2017-06-23 | 清华大学 | A kind of relay type based on single user multiple spot cheats the localization method in source |
| CN108519586A (en) * | 2018-04-03 | 2018-09-11 | 芜湖泰贺知信息***有限公司 | A kind of distribution Passive Radar System and its object localization method |
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Application publication date: 20190528 |