CN105572662B - A kind of distance-measuring and positioning method, system and device - Google Patents
A kind of distance-measuring and positioning method, system and device Download PDFInfo
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- CN105572662B CN105572662B CN201510244549.XA CN201510244549A CN105572662B CN 105572662 B CN105572662 B CN 105572662B CN 201510244549 A CN201510244549 A CN 201510244549A CN 105572662 B CN105572662 B CN 105572662B
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
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Abstract
The invention discloses a kind of distance-measuring and positioning method, system and device, to solve the problems, such as to cause the detection range of passive radar range positioning system to be restricted because echo time difference analysis interval is small present in prior art.This method includes：When passive radar station receives the direct wave signal and reflection echo signal of the digital television signal sent corresponding to terrestrial DTV irradiation source, according to the pre-set first touring stepping delay compensation, compensation of delay is carried out to the direct wave signal, obtains the direct wave signal after compensation of delay；According to the frame structure of the digital television signal and time delay analysis interval, according to the direct wave signal after the reflection echo signal and the compensation of delay, echo time difference variable is calculated；By the echo time difference variable and the first touring stepping delay compensation sum operation, the target echo time difference is obtained；According to the target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined.
Description
Technical field
The present invention relates to target positioning field, more particularly to a kind of method, system and device of ranging localization.
Background technology
It is existing realized using terrestrial DTV irradiation source (such as terrestrial DTV base station etc.) to extraterrestrial target and
In the passive radar range positioning system that the distance between passive radar is measured, it is already possible to realize anti-based on DTV
It is emitted back towards the characteristics of known to ripple signal frame structure and the orthogonality feature of ofdm signal, by digital television reflector echo-signal
The echo time difference is obtained with the dissection process of the reception time difference of direct wave signal, and space is accurately calculated according to the echo time difference
Distance of the target at a distance of passive radar.Wherein, above-mentioned " DTV reflection echo signal " refers to extraterrestrial target to ground number
Reflected signal obtained from digital television signal transmitted by word TV base station is reflected；And " direct wave signal " is then relative
For the recipient of signal, it specifically refers to that recipient directly receives, no by extraterrestrial target reflection, ground
The digital television signal that DTV base station is sent.
At present, limited by digital television signal itself frame structure, the analysis interval of the echo time difference is smaller, will not typically surpass
500us is crossed, this allows for the detection range of the existing passive radar range positioning system using terrestrial DTV irradiation source
It is restricted.Such as exemplified by the echo time difference to parse is 500us, it may be determined that go out extraterrestrial target at a distance of passive radar
Distance is 500us × light velocity (being approximately equal to 166.5m), so as to understand the maximum detectable range of passive radar range positioning system only
For 166.5m.
The content of the invention
The embodiment of the present invention provides a kind of distance-measuring and positioning method, system and device, to solve present in prior art
The problem of because echo time difference analysis interval is small and causing the detection range of passive radar range positioning system to be restricted.
The embodiment of the present invention uses following technical scheme：
First aspect provides a kind of distance-measuring and positioning method, including：
When passive radar station receives the direct wave of the digital television signal sent corresponding to terrestrial DTV irradiation source
When signal and reflection echo signal, according to the pre-set first touring stepping delay compensation, the direct wave signal is carried out
Compensation of delay, obtain the direct wave signal after compensation of delay；
According to the frame structure of the digital television signal and time delay analysis interval, according to the reflection echo signal and institute
The direct wave signal after compensation of delay is stated, calculates echo time difference variable；
By the echo time difference variable and the first touring stepping delay compensation sum operation, when obtaining target echo
Difference；
According to the target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined.
Wherein, according to the target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined, specific bag
Include：
According to the target echo time difference and the transmission speed of the digital television signal, the extraterrestrial target phase is determined
Distance away from the passive radar station.
Wherein, it is determined that the extraterrestrial target after the distance at the passive radar station, methods described also includes：
According to the distance determined, and the last extraterrestrial target determined is at a distance of the passive radar station
Distance, determine movement tendency of the extraterrestrial target relative to the passive radar station；
According to the movement tendency determined, the described first touring stepping delay compensation is updated, obtains second
Touring stepping delay compensation；
The direct wave signal received again to the passive radar station using the described second touring stepping delay compensation is entered
Line delay compensates, and obtains the direct wave signal after compensation of delay；
The reflection echo signal received again according to the passive radar station, and the passive radar station is connect again
The direct wave signal received carries out compensation of delay and obtains the direct wave signal after compensation of delay, redefines the extraterrestrial target
Distance at a distance of the passive radar station.
Wherein, methods described also includes：
When passive radar station is only capable of receiving the direct wave signal, when being compensated according to the touring stepping pre-set
Prolong, compensation of delay is carried out to the direct wave signal successively, obtains the direct wave signal after compensation of delay, until the passive thunder
Untill the reflection echo signal corresponding to the digital television signal being received up to station；Wherein, the touring stepping delay compensation
Set according to time delay section corresponding to the farthest radius of investigation in passive radar station, and advised according to the stepping pre-set
Rule is changed.
Second aspect provides a kind of range positioning system, including delay compensation unit, echo time difference resolution unit and meter
Calculation machine processing unit, wherein：
The delay compensation unit, for receiving the digital television signal sent corresponding to terrestrial DTV irradiation source
Direct wave signal, and according to the pre-set first touring stepping delay compensation, compensation of delay is carried out to the direct wave signal,
The direct wave signal after compensation of delay is obtained, and is supplied to the echo time difference resolution unit；
The echo time difference resolution unit, for receiving the DTV for corresponding to the DTV irradiation source and being sent
The reflection echo signal of signal；And according to the frame structure and time delay analysis interval of the digital television signal, according to it is described anti-
The direct wave signal penetrated after the compensation of delay of echo-signal and delay compensation unit transmission, calculate the change of the echo time difference
Amount；The echo time difference variable is supplied to the computer processing unit；
The computer processing unit, for by the echo time difference variable and the first touring stepping delay compensation
Sum operation, obtain the target echo time difference；According to the target echo time difference, determine extraterrestrial target at a distance of the passive radar station
Distance.
Wherein, the computer processing unit is additionally operable to：
After the distance is determined, according to the distance, and the last extraterrestrial target determined is at a distance of institute
The distance at passive radar station is stated, determines movement tendency of the extraterrestrial target relative to the passive radar station；According to determining
The movement tendency, to the delay compensation unit forward delay interval compensate more new command；
The delay compensation unit, is additionally operable to：
Receive the compensation of delay more new command that the computer processing unit is sent；Sent out according to the computer processing unit
The compensation of delay sent more new command, the described first touring stepping delay compensation is updated, obtains the second touring stepping compensation
Time delay, and the second touring stepping delay compensation is utilized, compensation of delay is carried out to the direct wave signal received again, is delayed
Direct wave signal after compensation, and it is supplied to the echo time difference resolution unit；
The echo time difference resolution unit, is additionally operable to：
Reflection echo signal and the delay compensation unit according to receiving again connect again to the passive radar station
The direct wave signal received carries out compensation of delay and obtains the direct wave signal after compensation of delay, redefines the extraterrestrial target
Distance at a distance of the passive radar station.
The third aspect provides a kind of ranging localization device, including：
First delay compensation module, for receiving what is sent corresponding to terrestrial DTV irradiation source when passive radar station
When the direct wave signal and reflection echo signal of digital television signal, according to the pre-set first touring stepping delay compensation,
Compensation of delay is carried out to the direct wave signal, obtains the direct wave signal after compensation of delay；
Echo time difference variant determination module, for the frame structure according to the digital television signal and time delay analysis interval,
Direct wave signal after the compensation of delay obtained according to the reflection echo signal and first delay compensation module, calculate
Go out echo time difference variable；
Target echo time difference determining module, for the echo time difference variable for determining the echo time difference variant determination module
With the described first touring stepping delay compensation sum operation, the target echo time difference is obtained；
Apart from determining module, for the target echo time difference obtained according to the target echo time difference determining module, it is determined that
Distance of the extraterrestrial target at a distance of the passive radar station.
Wherein, it is described apart from determining module, it is specifically used for：
According to the target echo time difference and the transmission speed of the digital television signal, the extraterrestrial target phase is determined
Distance away from the passive radar station.
Wherein, described device also includes：
Spacing module is redefined, for according to the distance determined, and the last space determined
Target determines movement tendency of the extraterrestrial target relative to the passive radar station at a distance of the distance at the passive radar station；
According to the movement tendency determined, the described first touring stepping delay compensation is updated, obtains the second touring stepping
Delay compensation；The direct wave signal received again to the passive radar station using the described second touring stepping delay compensation is entered
Line delay compensates, and obtains the direct wave signal after compensation of delay；The reflection echo received again according to the passive radar station
Signal, and the direct wave signal that is received again to the passive radar station carry out compensation of delay and after obtaining compensation of delay
Direct wave signal, redefine distance of the extraterrestrial target at a distance of the passive radar station.
Wherein, described device also includes：
Second delay compensation module, for when passive radar station is only capable of receiving the direct wave signal, according to advance
The touring stepping delay compensation set, compensation of delay is carried out to the direct wave signal successively, obtains the direct projection after compensation of delay
Ripple signal, untill the passive radar station receives the reflection echo signal corresponding to the digital television signal；Wherein,
The touring stepping delay compensation according to corresponding to the farthest radius of investigation in passive radar station time delay section and set, and
Stepping rule according to pre-setting is changed.
The embodiment of the present invention has the beneficial effect that：
In the embodiment of the present invention, when passive radar station receives the numeral electricity sent corresponding to terrestrial DTV irradiation source
Depending on signal direct wave signal and reflection echo signal when, according to the pre-set first touring stepping delay compensation, to direct projection
Ripple signal carries out compensation of delay, obtains the direct wave signal after compensation of delay；Frame structure further according to digital television signal and when
Prolong analysis interval, according to the direct wave signal after reflection echo signal and compensation of delay, calculate echo time difference variable；It will return
Ripple time difference variable and the first touring stepping delay compensation sum operation, obtain the target echo time difference；According to the target echo time difference, really
Determine distance of the extraterrestrial target at a distance of passive radar station, since it is determined that the target echo time difference analysis interval it is relatively large, increase
The big detection range at passive radar station, avoid causes nothing present in prior art because echo time difference analysis interval is small
The problem of detection range of source radar range finding alignment system is restricted.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the realization principle figure of distance-measuring and positioning method provided in an embodiment of the present invention；
Fig. 2 is the specific implementation flow chart of distance-measuring and positioning method provided in an embodiment of the present invention；
Fig. 3 is the system architecture diagram of distance-measuring and positioning method provided in an embodiment of the present invention；
Fig. 4 is that delay compensation unit provided in an embodiment of the present invention and echo time difference resolution unit realize schematic diagram；
Fig. 5 realizes schematic diagram for ranging localization device provided in an embodiment of the present invention；
Fig. 6 realizes schematic diagram for range positioning system provided in an embodiment of the present invention.
Embodiment
In order to solve to cause passive radar ranging localization because echo time difference analysis interval is small present in prior art
The problem of detection range of system is restricted, the embodiments of the invention provide a kind of ranging localization scheme.In the technical scheme,
When passive radar station receives the direct wave signal of the digital television signal sent corresponding to terrestrial DTV irradiation source and anti-
When penetrating echo-signal, according to the pre-set first touring stepping delay compensation, compensation of delay is carried out to direct wave signal, obtained
Direct wave signal after compensation of delay；Frame structure and time delay analysis interval further according to digital television signal, according to reflection echo
Direct wave signal after signal and compensation of delay, calculates echo time difference variable；By echo time difference variable and the first touring step
Enter delay compensation sum operation, obtain the target echo time difference；According to the target echo time difference, determine extraterrestrial target at a distance of passive radar
The distance stood, since it is determined that the target echo time difference analysis interval it is relatively large, increase the detection at passive radar station away from
From avoid causes the spy of passive radar range positioning system present in prior art because echo time difference analysis interval is small
The problem of ranging is from being restricted.
Embodiments of the invention are illustrated below in conjunction with Figure of description, it will be appreciated that implementation described herein
Example is merely to illustrate and explain the present invention, and is not intended to limit the invention.And in the case where not conflicting, the reality in the present invention
Applying the feature of example and embodiment can be combined with each other.
The embodiments of the invention provide a kind of distance-measuring and positioning method, as shown in figure 1, be the realization principle figure of this method, tool
Body comprises the steps：
Step 11, when passive radar station receives the digital television signal sent corresponding to terrestrial DTV irradiation source
When direct wave signal and reflection echo signal, according to the pre-set first touring stepping delay compensation, the direct projection to receiving
Ripple signal carries out compensation of delay, obtains the direct wave signal after compensation of delay；
Specifically, after terrestrial DTV irradiation source sends digital television signal, if the detection model at passive radar station
Extraterrestrial target is not present in enclosing, then a part of digital television signal can directly reach passive radar station, in the absence of by extraterrestrial target
Situation about being reflected, therefore passive radar station can only receive the corresponding direct wave signal with the digital television signal, without
Receive the corresponding reflection echo signal with the digital television signal；If there is space in the investigative range at passive radar station
Target, then a part of digital television signal can directly reach passive radar station, and a part of digital television signal can be by space mesh
Mark reflects and reaches passive radar station, therefore passive radar station can not only receive the corresponding direct wave with the digital television signal
Signal, it can also receive the corresponding reflection echo signal with the digital television signal.
Therefore, in the embodiment of the present invention, sent out when passive radar station can receive corresponding to terrestrial DTV irradiation source
When the direct wave signal and reflection echo signal of the digital television signal gone out, illustrate that extraterrestrial target comes into passive radar station
In investigative range, now according to the first touring stepping delay compensation pre-set, the direct wave signal received is prolonged
When compensate, obtain the direct wave signal after compensation of delay.
And when extraterrestrial target is introduced into the investigative range at passive radar station, passive radar station is not received corresponding to ground
The reflection echo signal for the digital television signal that face DTV irradiation source is sent, optionally, the embodiment of the present invention can be with
Including：
When passive radar station is only capable of receiving the straight of the digital television signal sent corresponding to terrestrial DTV irradiation source
During ejected wave signal, according to the touring stepping delay compensation pre-set, the direct wave signal received successively to passive radar station enters
Line delay compensates, and obtains the direct wave signal after compensation of delay, believes until the passive radar station receives corresponding to DTV
Number reflection echo signal untill；Wherein, touring stepping delay compensation is according to corresponding to the farthest radius of investigation in passive radar station
Time delay section and set, and be changed according to the stepping rule pre-set.
Touring stepping delay compensation in the embodiment of the present invention is the numerical value of a circulation change, its stepping rule can with but
It is not limited to meet：Step value, touring stepping delay compensation maximum and touring stepping delay compensation minimum value are pre-set, makes to patrol
Stepping delay compensation is returned according to the descending circulation change ascending again of the step value.
For example it is 100us to pre-set step value, touring stepping delay compensation maximum is 4000us, touring stepping compensation
Time delay minimum value is 100us, thus touring stepping delay compensation according to 4000us, 3900us, 3800us......100us,
200us, 300us......4000us circulation change.
Wherein, the first touring stepping delay compensation in step 11 in the light of actual conditions can be true according to following two kinds of situations
It is fixed：
The first situation, passive radar station receive reflection echo signal for the first time：
Used touring stepping delay compensation is defined as when passive radar station is received into reflection echo signal for the first time
First touring stepping delay compensation；
Second of situation, passive radar station non-first time (such as second, third time ... n-th) are received and are reflected back
Ripple signal：
Movement tendency according to the extraterrestrial target determined relative to passive radar station, the touring stepping used to the last time
Delay compensation is updated, and obtains the first touring stepping delay compensation.
Step 12, passive radar station is according to the frame structure and time delay analysis interval of digital television signal, according to what is received
Direct wave signal after reflection echo signal and obtained compensation of delay, calculates echo time difference variable.
Step 13, by the echo time difference variable calculated and the first touring stepping delay compensation sum operation, target is obtained
The echo time difference.
Step 14, according to the obtained target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined.
Specifically, the digital television signal sent according to obtained the target echo time difference and terrestrial DTV irradiation source
Transmission speed, determine distance of the extraterrestrial target at a distance of the passive radar station.
In the embodiment of the present invention, when passive radar station receives the numeral electricity sent corresponding to terrestrial DTV irradiation source
Depending on signal direct wave signal and reflection echo signal when, according to the pre-set first touring stepping delay compensation, to direct projection
Ripple signal carries out compensation of delay, obtains the direct wave signal after compensation of delay；Frame structure further according to digital television signal and when
Prolong analysis interval, according to the direct wave signal after reflection echo signal and compensation of delay, calculate echo time difference variable；It will return
Ripple time difference variable and the first touring stepping delay compensation sum operation, obtain the target echo time difference；According to the target echo time difference, really
Determine distance of the extraterrestrial target at a distance of passive radar station, since it is determined that the target echo time difference analysis interval it is relatively large, increase
The big detection range at passive radar station, avoid causes nothing present in prior art because echo time difference analysis interval is small
The problem of detection range of source radar range finding alignment system is restricted.
Because extraterrestrial target is in mobile status, therefore should be a continuous mistake for the ranging localization of extraterrestrial target
Journey, as shown in Fig. 2 for the specific implementation flow chart of distance-measuring and positioning method provided in an embodiment of the present invention, comprise the steps：
Step 21, when passive radar station is only capable of receiving the DTV letter sent corresponding to terrestrial DTV irradiation source
Number direct wave signal when, according to the touring stepping delay compensation pre-set, the direct wave that is received successively to passive radar station
Signal carries out compensation of delay, obtains the direct wave signal after compensation of delay, until the passive radar station is received corresponding to numeral
Untill the reflection echo signal of TV signal；Wherein, touring stepping delay compensation is according to the farthest radius of investigation in passive radar station
Corresponding time delay section and set, and be changed according to the stepping rule pre-set.
Step 22, when passive radar station receives the DTV sent corresponding to terrestrial DTV irradiation source for the first time
During the reflection echo signal of signal, according to the pre-set first touring stepping delay compensation, to the direct wave signal received
Compensation of delay is carried out, obtains the direct wave signal after compensation of delay；Wherein, the first touring stepping delay compensation is passive radar station
Receive used touring stepping delay compensation during reflection echo signal for the first time；
Step 23, passive radar station is according to the frame structure and time delay analysis interval of digital television signal, according to what is received
Direct wave signal after reflection echo signal and obtained compensation of delay, calculates echo time difference variable.
Step 24, by the echo time difference variable calculated and the first touring stepping delay compensation sum operation, target is obtained
The echo time difference.
Step 25, according to the obtained target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined.
Step 26, according to the above-mentioned distance determined, and the last extraterrestrial target determined is at a distance of passive radar station
Distance, determine movement tendency of the extraterrestrial target relative to the passive radar station；
Step 27, according to the movement tendency determined, the first touring stepping delay compensation is updated, second is obtained and patrols
Return stepping delay compensation；
Specifically, when it is close to passive radar station to judge extraterrestrial target movement tendency, then the first touring stepping is mended
Repay the second touring stepping delay compensation that time delay is updated to be less than the first touring stepping delay compensation；When judging extraterrestrial target
When movement tendency is away from passive radar station, when being updated to be more than the first touring stepping compensation by the first touring stepping delay compensation
The the second touring stepping delay compensation prolonged.
Step 28, the direct wave signal received again to the passive radar station using the second touring stepping delay compensation is entered
Line delay compensates, and obtains the direct wave signal after compensation of delay；
Step 29, the reflection echo signal received again according to the passive radar station, and the passive radar station is again
The direct wave signal after the compensation of delay obtained during reflection echo signal is received, redefines extraterrestrial target at a distance of passive radar
The distance stood.
In order to be better understood from the embodiment of the present invention, below in conjunction with the specific implementation specifically implemented to the embodiment of the present invention
Process illustrates.
As shown in figure 3, be the system architecture diagram of distance-measuring and positioning method provided in an embodiment of the present invention, including ground digital electricity
Include depending on base station (i.e. terrestrial DTV irradiation source) and passive radar station, passive radar station：Direct projection wave antenna, echo antenna,
Echo time difference resolution unit, delay compensation unit and computer processing unit.
Delay compensation unit, for receiving the numeral electricity for corresponding to terrestrial DTV base station and sending by direct projection wave antenna
Compensation of delay is carried out to direct wave signal depending on the direct wave signal of signal, and according to the instruction of computer processing unit, and will be prolonged
When compensation after direct wave signal be sent into echo time difference resolution unit.
Echo time difference resolution unit, for receiving the numeral for corresponding to terrestrial DTV base station and sending by echo antenna
Processing is compared with direct wave signal in the reflection echo signal of TV signal, then the reflection echo signal to receiving, and produces
Echo time difference variable, and the echo time difference variable is sent into computer processing unit；
Computer processing unit, the echo time difference variable for being sent to echo time difference resolution unit carry out calculation process,
The target echo time difference is determined, and determines the variation tendency of the target echo time difference, and sends instruction control to delay compensation unit and prolongs
When the time change that compensates.
Specifically, the digital television signal of terrestrial DTV Base Transmitter reflexes to echo time difference solution by extraterrestrial target
The echo antenna of unit, i.e. reflection echo signal are analysed, digital television signal is sent into delay compensation unit by direct projection wave antenna, i.e.,
Direct wave signal, echo time difference resolution unit is according to the frame structure of digital television signal and the orthogonality of ofdm signal, to reflection
Echo-signal and direct wave signal are handled, and produce echo time difference variable, and the echo time difference variable is sent at computer
Manage unit and carry out calculation process, computer processing unit calculates the target echo time difference according to echo time difference variable, and determines mesh
The variation tendency of the echo time difference is marked, and sends to delay compensation unit the instruction of the time change for controlling compensation of delay, when
Prolong the instruction that compensating unit is sent according to computer processing unit, compensation of delay is carried out to direct wave signal, after compensation of delay
Direct wave signal is sent into echo time difference resolution unit, after echo time difference resolution unit is according to reflection echo signal and compensation of delay
Direct wave signal produces new one group of echo time difference variable and is sent into computer processing unit, and computer processing unit is according to this time
Ripple time difference variable calculates position, movement locus and the movement velocity of extraterrestrial target, and simultaneous computer processing unit is to time delay
Compensating unit sends instruction, and the movement tendency of the compensation of delay data of delay of control compensating unit spatially target automatically increases or decreases,
Compensation of delay data are sent into echo time difference resolution unit, after echo time difference resolution unit is according to reflection echo signal and compensation of delay
Direct wave signal produce new one group echo time difference variable and be sent into computer processing unit, computer processing unit is followed by this
Ring constantly carries out calculation process, realizes the ranging localization to extraterrestrial target.
As shown in figure 4, be delay compensation unit and the specific implementation schematic diagram of echo time difference resolution unit, wherein, reference
Fig. 4, the digital television signal of terrestrial DTV Base Transmitter reflex to echo antenna through extraterrestrial target and are sent into echo time difference solution
Unit is analysed, combining processing unit is sent into after the subrane filter filtering of the unit；The number of terrestrial DTV Base Transmitter
Word TV signal is sent into delay compensation unit by direct projection wave antenna, passes through variable attenuation after delay compensation unit compensation of delay
The combining processing unit of echo time difference resolution unit is sent into device adjustment, and combining processing unit is to reflection echo signal and compensation of delay
Direct wave signal afterwards is sent into frequency converter down coversion after being combined processing, by intermediate-freuqncy signal after down coversion twice filters twice
Channel demodulation unit is sent into, channel demodulation unit solves to the direct wave intermediate-freuqncy signal after reflection echo signal and compensation of delay
Reason is mediated, the signal is simultaneously sent into Echo Processing unit by demodulated generation digital television baseband signals, and Echo Processing unit utilizes
The orthogonality of digital television signal frame structure and ofdm signal, it can parse straight after reflection echo signal and compensation of delay
Time difference between ejected wave signal, and the time difference is sent into computer processing unit, computer processing unit enters to the data
Row calculation process analyzes the variation tendency of the time difference, and the instruction of compensation of delay increase and decrease is sent to delay compensation unit, and time delay is mended
Unit is repaid to increase or decrease amount of delay according to the instruction, so as to realize the amount of delay of direct wave signal is carried out automatically with
Track compensates.
Delay compensation unit is by subrane wave filter, amplifier, Up/Down Conversion device, modulus digital-to-analog converter, data signal
Processor group is into direct wave radiofrequency signal changes into through subrane filter filtering, amplification, down coversion, analog to digital conversion and changes digital letter
Number, it is sent into digital signal processor and carries out stored digital delay process, the signal after delay process is converted into through digital-to-analog converter
Analog intermediate frequency signal, direct wave time delayed signal is restored through up-conversion amplification filtering, by variable attenuator with suitable signal
Intensity is sent into echo time difference resolution unit and participates in the parsing of the new round time difference.
In embodiments of the present invention, the investigative range (i.e. farthest radius of investigation) at passive radar station is set as 600 kilometers, when
It is 4000us to prolong compensating unit delay preset value, and the time delay analysis interval of echo time difference resolution unit is 500us, its delay compensation
Section is 100-3500us, and when radar does not find target, the sweep interval of radar will be according to by as far as near, then from the near to the remote
Regular cyclic scanning, the delay variable of delay compensation unit will according to descending circulation change ascending again, i.e., according to
The 4000us of 4000us, 3900,3800 ... 100,200,300,400 ... changes.
Such as：Target is being found apart from 600 kilometers of passive radar station region, the compensation of delay time is set from 4000us-
100us-4000us scan rounds change, and target Reflection delay is X, when the compensation of delay time is 3900us, its echo time delay
The delay that resolution unit parses is 27us, and its target reflection echo time delay is 3927us, then extraterrestrial target is at a distance of passive radar
It is about 3927us/3.3/2=595 kilometers to stand.
A kind of ranging localization apparatus and system is also each provided based on same inventive concept, in the embodiment of the present invention, by
It is similar to distance-measuring and positioning method to solve the principle of problem in said apparatus and system, therefore the implementation of said apparatus and system can be with
Referring to the implementation of method, repeat part and repeat no more.
As shown in figure 5, be the structural representation of ranging localization device provided in an embodiment of the present invention, including：
First delay compensation module 51, for being sent when passive radar station receives corresponding to terrestrial DTV irradiation source
Digital television signal direct wave signal and reflection echo signal when, when being compensated according to the pre-set first touring stepping
Prolong, compensation of delay is carried out to the direct wave signal, obtains the direct wave signal after compensation of delay；
Echo time difference variant determination module 52, for the frame structure according to the digital television signal and time delay parsing area
Between, the direct wave letter after the compensation of delay obtained according to the reflection echo signal and first delay compensation module 51
Number, calculate echo time difference variable；
Target echo time difference determining module 53, for the echo time difference for determining the echo time difference variant determination module 52
Variable and the first touring stepping delay compensation sum operation, obtain the target echo time difference；
Apart from determining module 54, for the target echo time difference obtained according to the target echo time difference determining module 53,
Determine distance of the extraterrestrial target at a distance of the passive radar station.
Wherein, it is described apart from determining module 54, it is specifically used for：
According to the target echo time difference and the transmission speed of the digital television signal, the extraterrestrial target phase is determined
Distance away from the passive radar station.
Wherein, described device also includes：
Spacing module 55 is redefined, for according to the distance determined, and the last sky determined
Between target at a distance of the distance at the passive radar station, determine that the extraterrestrial target becomes relative to the motion at the passive radar station
Gesture；According to the movement tendency determined, the described first touring stepping delay compensation is updated, obtains the second touring step
Enter delay compensation；The direct wave signal received again to the passive radar station using the described second touring stepping delay compensation
Compensation of delay is carried out, obtains the direct wave signal after compensation of delay；It is reflected back according to what the passive radar station received again
Ripple signal, and the direct wave signal that is received again to the passive radar station carry out compensation of delay and after obtaining compensation of delay
Direct wave signal, redefine distance of the extraterrestrial target at a distance of the passive radar station.
Wherein, described device also includes：
Second delay compensation module 56, for when passive radar station is only capable of receiving the direct wave signal, according to pre-
The touring stepping delay compensation first set, compensation of delay is carried out to the direct wave signal successively, obtained straight after compensation of delay
Ejected wave signal, untill the passive radar station receives the reflection echo signal corresponding to the digital television signal；Its
In, the touring stepping delay compensation be according to corresponding to the farthest radius of investigation in passive radar station time delay section and set
, and be changed according to the stepping rule pre-set.
For convenience of description, above each several part is divided by function describes respectively for each module (or unit).Certainly, exist
The function of each module (or unit) can be realized in same or multiple softwares or hardware when implementing of the invention.
When it is implemented, above-mentioned ranging localization device can be arranged in passive radar station.
As shown in fig. 6, be the structural representation of range positioning system provided in an embodiment of the present invention, including：Delay compensation
Unit 61, echo time difference resolution unit 62 and computer processing unit 63, wherein：
The delay compensation unit 61, for receiving the digital television signal for corresponding to terrestrial DTV irradiation source and sending
Direct wave signal, and according to the pre-set first touring stepping delay compensation, line delay benefit is entered to the direct wave signal
Repay, obtain the direct wave signal after compensation of delay, and be supplied to the echo time difference resolution unit 62；
The echo time difference resolution unit 62, for receiving the numeral electricity for corresponding to the DTV irradiation source and being sent
Depending on the reflection echo signal of signal；And according to the frame structure and time delay analysis interval of the digital television signal, according to it is described
Direct wave signal after the compensation of delay that reflection echo signal and the delay compensation unit 61 are sent, calculates the echo time difference
Variable；The echo time difference variable is supplied to the computer processing unit 63；
The computer processing unit 63, during for the echo time difference variable and the first touring stepping to be compensated
Prolong sum operation, obtain the target echo time difference；According to the target echo time difference, determine extraterrestrial target at a distance of the passive radar
The distance stood.
Wherein, the computer processing unit 63 is additionally operable to：
After the distance is determined, according to the distance, and the last extraterrestrial target determined is at a distance of institute
The distance at passive radar station is stated, determines movement tendency of the extraterrestrial target relative to the passive radar station；According to determining
The movement tendency, to the forward delay interval of delay compensation unit 61 compensate more new command；
The delay compensation unit 61, is additionally operable to：
Receive the compensation of delay more new command that the computer processing unit 63 is sent；According to the computer processing unit
The 63 compensation of delay more new commands sent, are updated to the described first touring stepping delay compensation, obtain the second touring stepping
Delay compensation, and the second touring stepping delay compensation is utilized, compensation of delay is carried out to the direct wave signal received again, obtained
Direct wave signal after compensation of delay, and it is supplied to the echo time difference resolution unit 62；
The echo time difference resolution unit 62, is additionally operable to：
According to the reflection echo signal and the delay compensation unit 61 received again to the passive radar station again
The direct wave signal received carries out compensation of delay and obtains the direct wave signal after compensation of delay, redefines the space mesh
Distance of the mark at a distance of the passive radar station.
For convenience of description, above each several part is divided by function describes respectively for each module (or unit).Certainly, exist
The function of each module (or unit) can be realized in same or multiple softwares or hardware when implementing of the invention.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. distance-measuring and positioning method, it is characterised in that including：When passive radar station receives the direct wave signal of the digital television signal sent corresponding to terrestrial DTV irradiation source During with reflection echo signal, according to the pre-set first touring stepping delay compensation, line delay is entered to the direct wave signal Compensation, obtains the direct wave signal after compensation of delay；According to the frame structure of the digital television signal and time delay analysis interval, according to the reflection echo signal and described prolong When compensation after direct wave signal, calculate echo time difference variable；By the echo time difference variable and the first touring stepping delay compensation sum operation, the target echo time difference is obtained；According to the target echo time difference, distance of the extraterrestrial target at a distance of the passive radar station is determined.
- 2. the method as described in claim 1, it is characterised in that according to the target echo time difference, determine extraterrestrial target apart The distance at the passive radar station, is specifically included：According to the target echo time difference and the transmission speed of the digital television signal, determine the extraterrestrial target at a distance of institute State the distance at passive radar station.
- 3. the method as described in claim 1, it is characterised in that it is determined that the extraterrestrial target at a distance of the passive radar station After distance, methods described also includes：According to the distance determined, and the last extraterrestrial target determined at a distance of the passive radar station away from From determining movement tendency of the extraterrestrial target relative to the passive radar station；According to the movement tendency determined, the described first touring stepping delay compensation is updated, it is touring to obtain second Stepping delay compensation；The direct wave signal received again to the passive radar station using the described second touring stepping delay compensation is prolonged When compensate, obtain the direct wave signal after compensation of delay；The reflection echo signal received again according to the passive radar station, and the passive radar station is received again Direct wave signal carry out compensation of delay and obtain the direct wave signal after compensation of delay, redefine the extraterrestrial target apart The distance at the passive radar station.
- 4. the method as described in claim 1, it is characterised in that methods described also includes：When passive radar station is only capable of receiving the direct wave signal, according to the touring stepping delay compensation pre-set, according to It is secondary that compensation of delay is carried out to the direct wave signal, the direct wave signal after compensation of delay is obtained, until the passive radar station Untill receiving the reflection echo signal corresponding to the digital television signal；Wherein, the touring stepping delay compensation is root Set according to time delay section corresponding to the farthest radius of investigation in passive radar station, and enter according to the stepping rule pre-set Row change.
- 5. a kind of range positioning system, it is characterised in that at delay compensation unit, echo time difference resolution unit and computer Unit is managed, wherein：The delay compensation unit, the direct projection for the digital television signal that terrestrial DTV irradiation source is sent is corresponded to for receiving Ripple signal, and according to the pre-set first touring stepping delay compensation, compensation of delay is carried out to the direct wave signal, obtained Direct wave signal after compensation of delay, and it is supplied to the echo time difference resolution unit；The echo time difference resolution unit, for receiving the digital television signal for corresponding to the DTV irradiation source and being sent Reflection echo signal；And according to the frame structure and time delay analysis interval of the digital television signal, it is reflected back according to described Direct wave signal after the compensation of delay that ripple signal and the delay compensation unit are sent, calculates echo time difference variable；Will The echo time difference variable is supplied to the computer processing unit；The computer processing unit, for the echo time difference variable and the first touring stepping delay compensation to be added Computing, obtain the target echo time difference；According to the target echo time difference, distance of the extraterrestrial target at a distance of passive radar station is determined.
- 6. system as claimed in claim 5, it is characterised in that the computer processing unit is additionally operable to：After the distance is determined, according to the distance, and the last extraterrestrial target determined is at a distance of the nothing The distance of source radar station, determine movement tendency of the extraterrestrial target relative to the passive radar station；According to the institute determined Movement tendency is stated, more new command is compensated to the compensation of delay unit forward delay interval；The compensation of delay unit, is additionally operable to：Receive the compensation of delay more new command that the computer processing unit is sent；Sent according to the computer processing unit Compensation of delay more new command, the described first touring stepping delay compensation is updated, obtains the second touring stepping delay compensation, And the second touring stepping delay compensation is utilized, compensation of delay is carried out to the direct wave signal received again, obtains compensation of delay Direct wave signal afterwards, and it is supplied to the echo time difference resolution unit；The echo time difference resolution unit, is additionally operable to：Reflection echo signal and the compensation of delay unit according to receiving again receive again to the passive radar station Direct wave signal carry out compensation of delay and obtain the direct wave signal after compensation of delay, redefine the extraterrestrial target apart The distance at the passive radar station.
- A kind of 7. ranging localization device, it is characterised in that including：First delay compensation module, for receiving the numeral sent corresponding to terrestrial DTV irradiation source when passive radar station When the direct wave signal and reflection echo signal of TV signal, according to the pre-set first touring stepping delay compensation, to institute State direct wave signal and carry out compensation of delay, obtain the direct wave signal after compensation of delay；Echo time difference variant determination module, for the frame structure according to the digital television signal and time delay analysis interval, is contrasted Direct wave signal after the compensation of delay that the reflection echo signal and first delay compensation module obtain, is calculated back Ripple time difference variable；Target echo time difference determining module, for the echo time difference variable for determining the echo time difference variant determination module and institute The first touring stepping delay compensation sum operation is stated, obtains the target echo time difference；Apart from determining module, for the target echo time difference obtained according to the target echo time difference determining module, space is determined Distance of the target at a distance of the passive radar station.
- 8. device as claimed in claim 7, it is characterised in that it is described apart from determining module, it is specifically used for：According to the target echo time difference and the transmission speed of the digital television signal, determine the extraterrestrial target at a distance of institute State the distance at passive radar station.
- 9. device as claimed in claim 7, it is characterised in that described device also includes：Spacing module is redefined, for according to the distance determined, and the last extraterrestrial target determined Distance at a distance of the passive radar station, determines movement tendency of the extraterrestrial target relative to the passive radar station；According to The movement tendency determined, the described first touring stepping delay compensation is updated, obtains the second touring stepping compensation Time delay；The direct wave signal received again to the passive radar station using the described second touring stepping delay compensation is prolonged When compensate, obtain the direct wave signal after compensation of delay；The reflection echo signal received again according to the passive radar station, And the direct wave signal received again to the passive radar station carries out compensation of delay and obtains the direct projection after compensation of delay Ripple signal, redefine distance of the extraterrestrial target at a distance of the passive radar station.
- 10. device as claimed in claim 7, it is characterised in that described device also includes：Second delay compensation module, for when passive radar station is only capable of receiving the direct wave signal, according to pre-setting Touring stepping delay compensation, successively to the direct wave signal carry out compensation of delay, obtain the direct wave after compensation of delay letter Number, untill the passive radar station receives the reflection echo signal corresponding to the digital television signal；Wherein, it is described Touring stepping delay compensation according to corresponding to the farthest radius of investigation in passive radar station time delay section and set, and according to The stepping rule pre-set is changed.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841362A (en) * | 2009-03-17 | 2010-09-22 | 河南晨星广电科技有限公司 | Radio frequency synchronous processing apparatus for CMMB (China Mobile Multimedia Broadcasting) |
| EP2582162A1 (en) * | 2010-06-12 | 2013-04-17 | Yingping Zhou | Method, transmission centre, base station and system for sending broadcast television signals, |
| CN103813443A (en) * | 2012-11-13 | 2014-05-21 | 周颖平 | Distance measuring location system and device and signal transmitting method |
| CN104062649A (en) * | 2014-07-14 | 2014-09-24 | 武汉大学 | Digital television signal mobile platform passive radar system and digital television signal mobile platform passive radar signal processing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61235779A (en) * | 1985-04-11 | 1986-10-21 | Mitsubishi Electric Corp | Radar distance measuring instrument |
-
2015
- 2015-05-14 CN CN201510244549.XA patent/CN105572662B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841362A (en) * | 2009-03-17 | 2010-09-22 | 河南晨星广电科技有限公司 | Radio frequency synchronous processing apparatus for CMMB (China Mobile Multimedia Broadcasting) |
| EP2582162A1 (en) * | 2010-06-12 | 2013-04-17 | Yingping Zhou | Method, transmission centre, base station and system for sending broadcast television signals, |
| CN103813443A (en) * | 2012-11-13 | 2014-05-21 | 周颖平 | Distance measuring location system and device and signal transmitting method |
| CN104062649A (en) * | 2014-07-14 | 2014-09-24 | 武汉大学 | Digital television signal mobile platform passive radar system and digital television signal mobile platform passive radar signal processing method |
Non-Patent Citations (2)
| Title |
|---|
| 基于数字电视地面广播网的无线定位系统;柯炜等;《电信快报》;20080831(第8期);第44-48页 * |
| 基于数字电视的无源定位系统研究;朱滢;《中国优秀硕士学位论文全文数据库 信息科技辑》;20050315(第1期);第24-28页 * |
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