CN106093569A - Navigation signal measuring method, system and navigator inline diagnosis method, system - Google Patents
Navigation signal measuring method, system and navigator inline diagnosis method, system Download PDFInfo
- Publication number
- CN106093569A CN106093569A CN201610379983.3A CN201610379983A CN106093569A CN 106093569 A CN106093569 A CN 106093569A CN 201610379983 A CN201610379983 A CN 201610379983A CN 106093569 A CN106093569 A CN 106093569A
- Authority
- CN
- China
- Prior art keywords
- navigator
- signal
- navigation signal
- phase
- navigation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mathematical Physics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The present invention provides a kind of navigation signal measuring method, and the navigation signal sent navigator initially with all phase fast Fourier transform frequency spectrum analysis method carries out spectrum analysis, it is thus achieved that panoramic spectrum；Then the phase place of 90Hz, 150Hz and 1020Hz signal is determined according to described panoramic spectrum；Use discrete Fourier transform frequency spectrum analysis method that the local of described panoramic spectrum is carried out spectrum analysis again, it is thus achieved that zoom FFT；Thus the amplitude of 90Hz, 150Hz and 1020Hz signal is determined according to described zoom FFT；Described navigation signal is measured by the phase and amplitude finally according to described 90Hz, 150Hz and 1020Hz signal, it is thus achieved that measurement result.The present invention, have employed all phase fast Fourier transform frequency spectrum analysis method and method that discrete Fourier transform frequency spectrum analysis method combines carries out spectrum analysis, it is thus possible to eliminate or significantly weaken the environmental factors interference to navigation signal, and then obtain measurement result accurately.
Description
Technical field
The present invention relates to airport navigation technical field, be specifically related to a kind of navigation signal measuring method and system, Yi Jiyi
Plant navigator inline diagnosis method and system.
Background technology
In airport navigation system works, the work quality of navigator and navigation accuracy, except depending on that navigator is originally
Whether body exists outside fault, additionally depends on navigation surrounding enviroment, as multiple in building, navigator place, radio interference etc.
Factor affects.
Navigator be utilize spacing wave realize airborne vehicle guide, and spatial signal properties not only with navigator itself
Relevant, also affected by platform location surrounding.When there being object to be positioned within protection zone, guidance station place, navigation can be reflected and set
Standby signal, changes signal measurement environment.When navigator measures system within guidance station signal area protection zone to navigation
Affected by ambient environmental factors when the navigation signal that equipment sends measures and can be produced measurement error, measurement result is brought
Uncertain.
Being affected by above-mentioned factor, prior art can not measure the system measurement result pair to navigation signal according to navigator
Navigator carries out fault diagnosis, can only rule of thumb be carried out man-made fault diagnosis by staff, and diagnostic result is inaccurate.
Summary of the invention
For defect of the prior art, the present invention provides a kind of navigation signal measuring method and system, to eliminate or to subtract
The interference to measuring of the weak environmental factors, enables the navigation letter that navigator is sent by navigator test system more accurately
Number measure, it is thus achieved that the most accurate measurement result；Meanwhile, the present invention provide a kind of navigator inline diagnosis method and
System, the measurement result accurately obtained based on above-mentioned navigation signal measuring method and system, it is possible to achieve to navigator
Inline diagnosis, and there is higher accuracy.
First aspect, a kind of navigation signal measuring method that the present invention provides, including:
The navigation signal using all phase fast Fourier transform frequency spectrum analysis method to send navigator carries out frequency spectrum
Analyze, it is thus achieved that panoramic spectrum；
The phase place of 90Hz, 150Hz and 1020Hz signal is determined according to described panoramic spectrum；
Use discrete Fourier transform frequency spectrum analysis method that the local of described panoramic spectrum is carried out spectrum analysis, it is thus achieved that thin
Change frequency spectrum；
The amplitude of 90Hz, 150Hz and 1020Hz signal is determined according to described zoom FFT；
Described navigation signal is measured by the phase and amplitude according to described 90Hz, 150Hz and 1020Hz signal, it is thus achieved that
Measurement result.
Optionally, described measurement result include the percentage modulation difference in depth modulation of 90Hz-150Hz and modulation depth and, and
The Morse code obtained is decoded by 1020Hz signal.
Optionally, the navigation letter that navigator is sent by described employing all phase fast Fourier transform frequency spectrum analysis method
Number carry out spectrum analysis, it is thus achieved that panoramic spectrum, including:
The navigation signal using all phase data preprocessing method to send navigator carries out pretreatment；
Pretreated data are carried out windowing fast Fourier transform, it is thus achieved that panoramic spectrum.
Second aspect, a kind of navigation signal measurement system that the present invention provides, including:
All phase fast Fourier transform module, is used for using all phase fast Fourier transform frequency spectrum analysis method to leading
The navigation signal that boat equipment sends carries out spectrum analysis, it is thus achieved that panoramic spectrum；
Signal phase determines module, for determining the phase of 90Hz, 150Hz and 1020Hz signal according to described panoramic spectrum
Position；
Discrete Fourier transform module, for using discrete Fourier transform frequency spectrum analysis method to described panoramic spectrum
Local carries out spectrum analysis, it is thus achieved that zoom FFT；
Signal amplitude determines module, for determining the width of 90Hz, 150Hz and 1020Hz signal according to described zoom FFT
Value；
Signal measurement module, is used for the phase and amplitude according to described 90Hz, 150Hz and 1020Hz signal to described navigation
Signal measures, it is thus achieved that measurement result.
Optionally, described all phase fast Fourier transform module, including:
All phase pretreatment unit, for the navigation signal using all phase data preprocessing method to send navigator
Carry out pretreatment；
Windowing fast Fourier transform unit, for pretreated data are carried out windowing fast Fourier transform, obtains
Obtain panoramic spectrum.
The third aspect, a kind of navigator inline diagnosis method that the present invention provides, including:
The navigation signal that navigator is sent by the described navigation signal measuring method using the present invention to provide measures,
To eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measurement result；
The first navigational structure figure is drawn according to described measurement result；
Unit type according to described navigator draws theoretic second navigational structure figure；
Judge that the structure trend of described first navigational structure figure and described second navigational structure figure is the most close；
If the most close, then judge that described navigator breaks down.
Optionally, the described unit type according to described navigator draws theoretic second navigational structure figure, including:
According to the unit type of described navigator, moment method is used to draw navigation signal directional diagram；
According to the landform around described navigator and the situation of barrier, use physical optics method according to described navigation
Sense figure draws theoretic second navigational structure figure.
Optionally, the described unit type according to described navigator draws theoretic second navigational structure figure, including:
Active radiation event near unit type according to described navigator and guidance station location, theoretical in conjunction with electromagnetic propagation
Draw theoretic second navigational structure figure.
Optionally, described navigator inline diagnosis method, also include:
If the structure trend of described first navigational structure figure and described second navigational structure figure is close, then according to drawing
The method for drafting that second navigational structure figure uses, it is judged that described navigation signal is propagated the factor producing interference.
Fourth aspect, a kind of navigator in-circuit diagnostic system that the present invention provides, including:
Navigation signal measurement module, sends out navigator for the described navigation signal measuring method using the present invention to provide
The navigation signal gone out measures, to eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measurement result；
First navigational structure figure drafting module, for drawing the first navigational structure figure according to described measurement result；
Second navigational structure figure drafting module, draws theoretic second for the unit type according to described navigator
Navigational structure figure；
Navigational structure figure comparison module, for judging described first navigational structure figure and the knot of described second navigational structure figure
Structure trend is the most close；
Navigation fault determination module, if for the most close, then judging that described navigator breaks down.
As shown from the above technical solution, a kind of navigation signal measuring method that the present invention provides, fast initially with all phase
The navigation signal that navigator is sent by speed Fourier transformation frequency spectrum analysis method carries out spectrum analysis, it is thus achieved that panoramic spectrum；So
The phase place of 90Hz, 150Hz and 1020Hz signal is determined afterwards according to described panoramic spectrum；Discrete Fourier transform frequency spectrum is used to divide again
Analysis method carries out spectrum analysis to the local of described panoramic spectrum, it is thus achieved that zoom FFT；Thus determine according to described zoom FFT
The amplitude of 90Hz, 150Hz and 1020Hz signal；Phase and amplitude pair finally according to described 90Hz, 150Hz and 1020Hz signal
Described navigation signal measures, it is thus achieved that measurement result.The present invention, have employed all phase fast Fourier transform spectrum analysis side
The method that method and discrete Fourier transform frequency spectrum analysis method combine carries out spectrum analysis such that it is able to eliminates or significantly subtracts
The interference to navigation signal of the weak environmental factors, and then obtain measurement result accurately.
Additionally, the present invention also provides for a kind of navigator inline diagnosis method, lead initially with described in present invention offer
The navigation signal that navigator is sent by boat signal measurement method measures, and does measurement to eliminate or to weaken environmental factors
Disturb, it is thus achieved that measurement result；Then the first navigational structure figure is drawn according to described measurement result；Further according to setting of described navigator
Standby model draws theoretic second navigational structure figure；Next, it is judged that described first navigational structure figure and described second navigation
The structure trend of structure chart is the most close；If the most close, then judge that described navigator breaks down.The present invention, based on above-mentioned
Navigation signal measuring method, utilizes above-mentioned navigation signal measuring method measurement result accurately, by drawing navigational structure figure also
Compare with theoretic navigational structure figure, the inline diagnosis to navigator can be realized according to comparative result, have relatively
High accuracy.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described.In all of the figs, similar element
Or part is typically by the reference mark being similar to.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows the flow chart of a kind of navigation signal measuring method that first embodiment of the invention provided；
Fig. 2 shows that a kind of navigation signal that second embodiment of the invention is provided measures the structural representation of system；
Fig. 3 shows the flow chart of a kind of navigator inline diagnosis method that third embodiment of the invention provided；
Fig. 4 shows the structural representation of a kind of navigator in-circuit diagnostic system that fourth embodiment of the invention provided
Figure；
Fig. 5 shows the flow chart of a kind of all phase fast Fourier transform spectrum analysis that the present invention provides.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of technical solution of the present invention is described in detail.Following example are only used for
Technical scheme is clearly described, is therefore intended only as example, and the protection of the present invention can not be limited with this
Scope.
It should be noted that except as otherwise noted, technical term used in this application or scientific terminology should be this
The ordinary meaning that bright one of ordinary skill in the art are understood.
The application provides a kind of navigation signal measuring method and system, and a kind of navigator inline diagnosis method and be
System.Below in conjunction with the accompanying drawings embodiments of the invention are illustrated.
Fig. 1 shows the flow chart of a kind of navigation signal measuring method that first embodiment of the invention provided.Such as Fig. 1 institute
Showing, a kind of navigation signal measuring method that first embodiment of the invention provides comprises the following steps:
Step S101: use the navigation signal that navigator is sent by all phase fast Fourier transform frequency spectrum analysis method
Carry out spectrum analysis, it is thus achieved that panoramic spectrum.
In this step, different length or the FFT of continuous two sections can be carried out by the navigation signal that navigator is sent
(Fast Fourier Transformation, fast Fourier transform), it is thus achieved that FFT panoramic spectrum, in order to correction obtains accurately
Phase place.
During owing to navigation signal carrying out discrete spectrum analysis, whether frequency, amplitude and phase place the most all there may be
Error.All-phase FFT spectrum analysis can eliminate or significantly reduce this error, to improve analysis precision.
All-phase FFT spectrum analysis mainly includes all phase data prediction and windowing FFT two parts, such as N=3
Time, the flow chart that whole phase FFT frequency spectrum divides is as shown in Figure 5.
When FFT calculates and counts as N, data length to be processed is needed to should be (2N-1).According to linear TIME SHIFT INVARIANCE system
The principle of stacking of system, the superposition of the response value that all list entries produce should be equal to all of list entries superposition and deactivate
The response value produced after system.All phase data prediction utilizes this character, the data sequence of a length of to input system (2N-1)
Row use first periodic extension, sue for peace and the method blocked, it is achieved to the segmentation that all length is N comprising input sample x (n)
Whole considerations of situation.
The method is owing to considering all of data sectional situation, thus has phase place ergodic, thus weakens waveform
Amplitude jump from beginning to end so that signal performance is improved.Through the data of all phase pretreatment, then calculate through tradition windowing FFT,
Whole All-phase FFT spectrum analysis process, the phase spectrum from the panoramic spectrum that All-phase FFT spectrum analysis obtains can be completed
In can accurately learn the phase place of the signals such as 90Hz/150Hz/1020Hz.
In the embodiment that the present invention provides, described employing all phase fast Fourier transform frequency spectrum analysis method pair
The navigation signal that navigator sends carries out spectrum analysis, it is thus achieved that panoramic spectrum, including:
The navigation signal using all phase data preprocessing method to send navigator carries out pretreatment；
Pretreated data are carried out windowing fast Fourier transform, it is thus achieved that panoramic spectrum.
Step S102: determine the phase place of 90Hz, 150Hz and 1020Hz signal according to described panoramic spectrum.
Step S103: use discrete Fourier transform frequency spectrum analysis method that the local of described panoramic spectrum is carried out frequency spectrum and divide
Analysis, it is thus achieved that zoom FFT.
The panoramic spectrum produced for step S101, can be continuing with local to be refined again with DFT (Discrete
Fourier Transform, discrete Fourier transform) carry out computing, the frequency spectrum high to obtain local refinement precision, the most again
Correction frequency and amplitude, have the advantage that adaptability is good, precision is higher.
When being embodied as, first can become summation, time domain discrete and time domain truncation by integrated for continuous fourier transform
For there being three steps of limit for length to transform to time discrete, frequency continuous print special Fourier transformation form:
In formula,Being a single tone signal sequence, its frequency, amplitude and initial phase are divided
Wei f0、A0And θ0,For by frequency resolution Δ f=fsThe normalized frequency of/N normalizing.N is that FFT counts, fs
For sample frequency.
Then to the frequency separation [f specified1,f2] refine, set refinement multiple as D, then frequency discrimination after refinement
Rate is
Δ f'=Δ f/D (formula 2)
Thus the calculating frequency sequence understanding refinement is
{f1,f1+Δf',f1+2Δf',...,f2(formula 3)
Finally try to achieve the required amplitude spectrum calculating frequency sequence and phase spectrum, in each thinning spectral line with above-mentioned formula 1
Search frequency values corresponding to Amplitude maxima point is the estimation frequency of harmonic signal.Estimating frequency search and 90Hz/ again
The frequency that 150Hz/1020Hz etc. are close, in conjunction with the phase spectrum of whole phase FFT above, thus obtains corresponding amplitude.
Step S104: determine the amplitude of 90Hz, 150Hz and 1020Hz signal according to described zoom FFT.
Step S105: described navigation signal is carried out according to the phase and amplitude of described 90Hz, 150Hz and 1020Hz signal
Measure, it is thus achieved that measurement result.
In the embodiment that the present invention provides, described measurement result includes that the percentage modulation modulation of 90Hz-150Hz is deep
Spend poor (DDM, Difference in Depth of Modulation) and modulation depth and (SDM, Sum of the Depths
Of Modulation), and the Morse code obtained is decoded by 1020Hz signal.
So far, by step S101 to step S105, a kind of navigation letter that first embodiment of the invention is provided is completed
The flow process of number measuring method.The present invention, have employed all phase fast Fourier transform frequency spectrum analysis method and discrete fourier becomes
Change the method that frequency spectrum analysis method combines and carry out spectrum analysis such that it is able to eliminate or significantly weaken environmental factors to navigation
The interference of signal, and then obtain measurement result accurately.
In above-mentioned first embodiment, it is provided that a kind of navigation signal measuring method, corresponding, the application is also
A kind of navigation signal is provided to measure system.Refer to Fig. 2, its a kind of navigation signal provided for second embodiment of the invention is measured
The structural representation of system.Owing to system embodiment is substantially similar to embodiment of the method, so describing fairly simple, it is correlated with it
Place sees the part of embodiment of the method and illustrates.System embodiment described below is only schematically.
A kind of navigation signal that second embodiment of the invention provides measures system, including:
All phase fast Fourier transform module 101, is used for using all phase fast Fourier transform frequency spectrum analysis method
The navigation signal sending navigator carries out spectrum analysis, it is thus achieved that panoramic spectrum；
Signal phase determines module 102, for determining 90Hz, 150Hz and 1020Hz signal according to described panoramic spectrum
Phase place；
Discrete Fourier transform module 103, is used for using discrete Fourier transform frequency spectrum analysis method to described panorama frequency
The local of spectrum carries out spectrum analysis, it is thus achieved that zoom FFT；
Signal amplitude determines module 104, for determining 90Hz, 150Hz and 1020Hz signal according to described zoom FFT
Amplitude；
Signal measurement module 105, is used for the phase and amplitude according to described 90Hz, 150Hz and 1020Hz signal to described
Navigation signal measures, it is thus achieved that measurement result.
In the embodiment that the present invention provides, described all phase fast Fourier transform module 101, including:
All phase pretreatment unit, for the navigation signal using all phase data preprocessing method to send navigator
Carry out pretreatment；
Windowing fast Fourier transform unit, for pretreated data are carried out windowing fast Fourier transform, obtains
Obtain panoramic spectrum.
Above, a kind of navigation signal provided for second embodiment of the invention measures the embodiment explanation of system.
A kind of navigation signal that the present invention provides measures system with above-mentioned navigation signal measuring method for identical invention
Design, has identical beneficial effect, and here is omitted.
The present invention also provides for a kind of navigator inline diagnosis method, and the method is based on above-mentioned navigation signal measuring method
And implement, related content refer to the explanation of above-mentioned first embodiment part, and partial content repeats no more.
Refer to Fig. 3, the flow process of its a kind of navigator inline diagnosis method provided by third embodiment of the invention
Figure, a kind of navigator inline diagnosis method that the 3rd embodiment provides comprises the following steps:
Step S201: the navigation signal that navigator is sent by the described navigation signal measuring method using the present invention to provide
Measure, to eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measurement result.
The concrete steps of this part, refer to the explanation of above-mentioned first embodiment part, and here is omitted.
Step S202: draw the first navigational structure figure according to described measurement result.
Step S203: draw theoretic second navigational structure figure according to the unit type of described navigator.
In the embodiment that the present invention provides, the described unit type according to described navigator is drawn theoretic
Second navigational structure figure, including:
According to the unit type of described navigator, moment method is used to draw navigation signal directional diagram；
According to the landform around described navigator and the situation of barrier, use physical optics method according to described navigation
Sense figure draws theoretic second navigational structure figure.
In another embodiment that the present invention provides, the described unit type according to described navigator is drawn in theory
The second navigational structure figure, including:
Active radiation event near unit type according to described navigator and guidance station location, theoretical in conjunction with electromagnetic propagation
Draw theoretic second navigational structure figure.
The above-mentioned two embodiment that this step is given has carried out exemplary illustration to the method drawing the second navigational structure figure,
Wherein, one is to draw the second navigational structure figure by moment method and physical optics method, is mainly used according to navigator week
The landform enclosed and barrier situation judge navigator whether fault；Another kind is to draw the second navigation by electromagnetic propagation theory
Structure chart, the active radiation event being mainly used in around according to navigator judges navigator whether fault；Two ways can
Individually to implement, it is also possible to being combined with each other comprehensive enforcement, it is all within protection scope of the present invention.
Step S204: judge the structure trend whether phase of described first navigational structure figure and described second navigational structure figure
Closely.
Step S205: if the most close, then judge that described navigator breaks down.
So far, by step S201 to step S205, a kind of navigation that completing third embodiment of the invention is provided sets
The flow process of standby inline diagnosis method.This method, based on above-mentioned navigation signal measuring method, utilizes above-mentioned navigation signal measuring method
Measurement result accurately, by drawing navigational structure figure and comparing with theoretic navigational structure figure, can be according to comparing
Result realizes the inline diagnosis to navigator, has higher accuracy.
It should be noted that the embodiment of the present invention provide described navigator inline diagnosis method can be not only used for right
Navigator carries out fault diagnosis, it is also possible to judge that the propagation to described navigation signal produces according to the judged result of step S204
The factor of interference.In the embodiment that the present invention provides, after step S204, also include:
If the structure trend of described first navigational structure figure and described second navigational structure figure is close, then according to drawing
The method for drafting that second navigational structure figure uses, it is judged that described navigation signal is propagated the factor producing interference.
Such as, if drawing the method for drafting of described second navigational structure figure employing for by moment method and physical optics method
Draw the second navigational structure figure, then, if described first navigational structure figure and the structure trend phase of described second navigational structure figure
Closely, then the navigation signal space change that explanation guidance station location environment causes can produce impact to the propagation of described navigation signal；If
Draw described second navigational structure figure use method for drafting for draw the second navigational structure figure by electromagnetic propagation theory, that
, if the structure trend of described first navigational structure figure and described second navigational structure figure is close, then near explanation guidance station location
Active radiation-induced navigation signal space changes and the propagation of described navigation signal can be produced impact.Sentence based on above-mentioned analysis
Disconnected, equipment state diagnosis can be set up, for the preventative of navigator and corrective maintenance, it is provided that reference frame.
Active or the situation of sourceless seism around navigation table of equipment location, analyze in airfield runway and around record
The structure trend of the navigation channel structure chart whether measurement data (such as modulation degree depth difference DDM value) draws with simulation is the most close, such as not phase
Closely, then can determine that navigator breaks down.
In the 3rd above-mentioned embodiment, it is provided that a kind of navigator inline diagnosis method, corresponding, this Shen
Please also provide for a kind of navigator in-circuit diagnostic system.Refer to Fig. 4, its a kind of navigation provided for fourth embodiment of the invention
The structural representation of equipment on-line diagnostic system.Owing to system embodiment is substantially similar to embodiment of the method, so describing to obtain ratio
Relatively simple, relevant part sees the part of embodiment of the method and illustrates.System embodiment described below is only schematically
's.
A kind of navigator in-circuit diagnostic system that fourth embodiment of the invention provides, including:
Navigation signal measurement module 201, sets navigation for the described navigation signal measuring method using the present invention to provide
The navigation signal that preparation goes out measures, to eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measurement result；
First navigational structure figure drafting module 202, for drawing the first navigational structure figure according to described measurement result；
Second navigational structure figure drafting module 203, draws theoretic for the unit type according to described navigator
Second navigational structure figure；
Navigational structure figure comparison module 204, is used for judging described first navigational structure figure and described second navigational structure figure
Structure trend the most close；
Navigation fault determination module 205, if for the most close, then judging that described navigator breaks down.
In the embodiment that the application provides, described second navigational structure figure drafting module 203, including:
Navigation signal directional diagram drawing unit, for the unit type according to described navigator, uses moment method to draw
Navigation signal directional diagram；
Passive navigation structure chart drawing unit, is used for according to the landform around described navigator and the situation of barrier,
Physical optics method is used to draw theoretic second navigational structure figure according to described navigation signal directional diagram.
In the embodiment that the application provides, described second navigational structure figure drafting module 203, including:
Active navigational structure figure drawing unit, has near the unit type according to described navigator and guidance station location
Source radiation event, draws theoretic second navigational structure figure in conjunction with electromagnetic propagation theory.
In the embodiment that the application provides, described navigator in-circuit diagnostic system, also include:
Interference factor analysis module, if the structure for described first navigational structure figure and described second navigational structure figure becomes
Gesture is close, then according to drawing the method for drafting that described second navigational structure figure uses, it is judged that the propagation to described navigation signal is produced
The factor of raw interference.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
It should be noted that flow chart in accompanying drawing and block diagram show the multiple embodiments according to the present invention system,
Architectural framework in the cards, function and the operation of method and computer program product.In this, in flow chart or block diagram
Each square frame can represent a module, program segment or a part for code, the part bag of described module, program segment or code
Executable instruction containing one or more logic functions for realizing regulation.It should also be noted that at some as the reality replaced
In Xian, the function marked in square frame can also occur to be different from the order marked in accompanying drawing.Such as, two continuous print sides
Frame can essentially perform substantially in parallel, and they can also perform sometimes in the opposite order, and this is according to involved function
Fixed.It is also noted that the group of the square frame in each square frame in block diagram and/or flow chart and block diagram and/or flow chart
Close, can realize by the special hardware based system of the function or action that perform regulation, or specialized hardware can be used
Combination with computer instruction realizes.
The navigation signal that the embodiment of the present invention is provided measures system and navigator in-circuit diagnostic system can be to calculate
Machine program product, including storing the computer-readable recording medium of program code, the instruction that described program code includes can use
In performing the method described in previous methods embodiment, implement and can be found in embodiment of the method, do not repeat them here.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the system of foregoing description,
The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, permissible
Realize by another way.Device embodiment described above is only schematically, such as, and the division of described unit,
Being only a kind of logic function to divide, actual can have other dividing mode when realizing, and the most such as, multiple unit or assembly can
To combine or to be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, shown or beg for
The coupling each other of opinion or direct-coupling or communication connection can be indirect by some communication interfaces, device or unit
Coupling or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme
's.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.
If described function is using the form realization of SFU software functional unit and as independent production marketing or use, permissible
It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is the most in other words
The part contributing prior art or the part of this technical scheme can embody with the form of software product, this meter
Calculation machine software product is stored in a storage medium, including some instructions with so that a computer equipment (can be individual
People's computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.
And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme, it all should be contained in the middle of the claim of the present invention and the scope of description.
Claims (10)
1. a navigation signal measuring method, it is characterised in that including:
The navigation signal using all phase fast Fourier transform frequency spectrum analysis method to send navigator carries out spectrum analysis,
Obtain panoramic spectrum；
The phase place of 90Hz, 150Hz and 1020Hz signal is determined according to described panoramic spectrum；
Use discrete Fourier transform frequency spectrum analysis method that the local of described panoramic spectrum is carried out spectrum analysis, it is thus achieved that refinement frequency
Spectrum；
The amplitude of 90Hz, 150Hz and 1020Hz signal is determined according to described zoom FFT；
Described navigation signal is measured by the phase and amplitude according to described 90Hz, 150Hz and 1020Hz signal, it is thus achieved that measure
Result.
Navigation signal measuring method the most according to claim 1, it is characterised in that described measurement result includes 90Hz-
The percentage modulation difference in depth modulation of 150Hz and modulation depth and, and decoded the Morse code obtained by 1020Hz signal.
Navigation signal measuring method the most according to claim 1, it is characterised in that described employing all phase fast Fourier
The navigation signal that navigator is sent by conversion frequency spectrum analysis method carries out spectrum analysis, it is thus achieved that panoramic spectrum, including:
The navigation signal using all phase data preprocessing method to send navigator carries out pretreatment；
Pretreated data are carried out windowing fast Fourier transform, it is thus achieved that panoramic spectrum.
4. a navigation signal measures system, it is characterised in that including:
All phase fast Fourier transform module, is used for using all phase fast Fourier transform frequency spectrum analysis method to set navigation
The navigation signal that preparation goes out carries out spectrum analysis, it is thus achieved that panoramic spectrum；
Signal phase determines module, for determining the phase place of 90Hz, 150Hz and 1020Hz signal according to described panoramic spectrum；
Discrete Fourier transform module, for using the discrete Fourier transform frequency spectrum analysis method local to described panoramic spectrum
Carry out spectrum analysis, it is thus achieved that zoom FFT；
Signal amplitude determines module, for determining the amplitude of 90Hz, 150Hz and 1020Hz signal according to described zoom FFT；
Signal measurement module, is used for the phase and amplitude according to described 90Hz, 150Hz and 1020Hz signal to described navigation signal
Measure, it is thus achieved that measurement result.
Navigation signal the most according to claim 4 measures system, it is characterised in that described all phase fast Fourier transform
Module, including:
All phase pretreatment unit, is carried out for the navigation signal using all phase data preprocessing method to send navigator
Pretreatment；
Windowing fast Fourier transform unit, for carrying out windowing fast Fourier transform to pretreated data, it is thus achieved that complete
Scape frequency spectrum.
6. a navigator inline diagnosis method, it is characterised in that including:
Use the navigation that navigator is sent by claim 1 to the navigation signal measuring method described in any one of claim 3
Signal measures, to eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measurement result；
The first navigational structure figure is drawn according to described measurement result；
Unit type according to described navigator draws theoretic second navigational structure figure；
Judge that the structure trend of described first navigational structure figure and described second navigational structure figure is the most close；
If the most close, then judge that described navigator breaks down.
Navigator inline diagnosis method the most according to claim 6, it is characterised in that described according to described navigator
Unit type draw theoretic second navigational structure figure, including:
According to the unit type of described navigator, moment method is used to draw navigation signal directional diagram；
According to the landform around described navigator and the situation of barrier, use physical optics method according to described navigation signal
Directional diagram draws theoretic second navigational structure figure.
Navigator inline diagnosis method the most according to claim 6, it is characterised in that described according to described navigator
Unit type draw theoretic second navigational structure figure, including:
Active radiation event near unit type according to described navigator and guidance station location, draws in conjunction with electromagnetic propagation theory
Theoretic second navigational structure figure.
Navigator inline diagnosis method the most according to claim 6, it is characterised in that also include:
If the structure trend of described first navigational structure figure and described second navigational structure figure is close, then according to drawing described second
The method for drafting that navigational structure figure uses, it is judged that described navigation signal is propagated the factor producing interference.
10. a navigator in-circuit diagnostic system, it is characterised in that including:
Navigation signal measurement module, for using claim 1 to the navigation signal measuring method described in any one of claim 3
The navigation signal sending navigator measures, to eliminate or to weaken the environmental factors interference to measuring, it is thus achieved that measure knot
Really；
First navigational structure figure drafting module, for drawing the first navigational structure figure according to described measurement result；
Second navigational structure figure drafting module, draws theoretic second navigation for the unit type according to described navigator
Structure chart；
Navigational structure figure comparison module, for judging that the structure of described first navigational structure figure and described second navigational structure figure becomes
Gesture is the most close；
Navigation fault determination module, if for the most close, then judging that described navigator breaks down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379983.3A CN106093569B (en) | 2016-05-30 | 2016-05-30 | Navigation signal measurement method, system and navigation equipment inline diagnosis method, system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379983.3A CN106093569B (en) | 2016-05-30 | 2016-05-30 | Navigation signal measurement method, system and navigation equipment inline diagnosis method, system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106093569A true CN106093569A (en) | 2016-11-09 |
| CN106093569B CN106093569B (en) | 2019-01-04 |
Family
ID=57230587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610379983.3A Active CN106093569B (en) | 2016-05-30 | 2016-05-30 | Navigation signal measurement method, system and navigation equipment inline diagnosis method, system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106093569B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505505A (en) * | 2017-08-18 | 2017-12-22 | 国家电网公司 | A kind of digitalized electrical energy meter and its metering method for being applied to a variety of loads in scene |
| CN109703787A (en) * | 2018-12-11 | 2019-05-03 | 上海航天控制技术研究所 | A kind of method for diagnosing faults of near-earth satellite three axis magnetometer data validity |
| CN110376497A (en) * | 2019-08-12 | 2019-10-25 | 国网四川电力服务有限公司 | Low-voltage distribution system series fault arc identification method based on full-phase deep learning |
| CN112083444A (en) * | 2020-08-19 | 2020-12-15 | 中国民用航空总局第二研究所 | Low-latitude airport ionosphere short-time prediction method considering plasma bubbles |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0244071A1 (en) * | 1986-04-23 | 1987-11-04 | Stc Plc | RF spectrum analysing receiver |
| JP2005214777A (en) * | 2004-01-29 | 2005-08-11 | Nsk Ltd | Frequency spectral analyzer |
| CN1996986A (en) * | 2006-11-16 | 2007-07-11 | 天津大学 | Full phase time shift phase difference spectrum correction method |
| CN101388001A (en) * | 2008-06-25 | 2009-03-18 | 天津大学 | High precision instant phase estimation method based on full-phase FFT |
| CN101718269A (en) * | 2009-11-20 | 2010-06-02 | 西安交通大学 | Surge symptom identification method based on frequency band energy |
| CN101825660A (en) * | 2010-05-05 | 2010-09-08 | 天津大学 | High-efficiency measurement method for sinusoidal signal frequency in undersampling and implementation device |
| US7930119B2 (en) * | 2007-11-08 | 2011-04-19 | Siemens Aktiengesellschaft | Method for analyzing AC voltage signals |
| CN102966526A (en) * | 2012-11-27 | 2013-03-13 | 西安陕鼓动力股份有限公司 | Diagnosis method for low-frequency fluid vibration excitation failure of compressor based on axial vibration analysis |
| CN104375111A (en) * | 2014-11-16 | 2015-02-25 | 甘肃省机械科学研究院 | Rapid high-precision refining correction method for intensive frequency spectrum |
| CN105466453A (en) * | 2015-11-19 | 2016-04-06 | 中国民用航空总局第二研究所 | On-line monitoring system of navigation equipment and method thereof |
-
2016
- 2016-05-30 CN CN201610379983.3A patent/CN106093569B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0244071A1 (en) * | 1986-04-23 | 1987-11-04 | Stc Plc | RF spectrum analysing receiver |
| JP2005214777A (en) * | 2004-01-29 | 2005-08-11 | Nsk Ltd | Frequency spectral analyzer |
| CN1996986A (en) * | 2006-11-16 | 2007-07-11 | 天津大学 | Full phase time shift phase difference spectrum correction method |
| US7930119B2 (en) * | 2007-11-08 | 2011-04-19 | Siemens Aktiengesellschaft | Method for analyzing AC voltage signals |
| CN101388001A (en) * | 2008-06-25 | 2009-03-18 | 天津大学 | High precision instant phase estimation method based on full-phase FFT |
| CN101718269A (en) * | 2009-11-20 | 2010-06-02 | 西安交通大学 | Surge symptom identification method based on frequency band energy |
| CN101825660A (en) * | 2010-05-05 | 2010-09-08 | 天津大学 | High-efficiency measurement method for sinusoidal signal frequency in undersampling and implementation device |
| CN102966526A (en) * | 2012-11-27 | 2013-03-13 | 西安陕鼓动力股份有限公司 | Diagnosis method for low-frequency fluid vibration excitation failure of compressor based on axial vibration analysis |
| CN104375111A (en) * | 2014-11-16 | 2015-02-25 | 甘肃省机械科学研究院 | Rapid high-precision refining correction method for intensive frequency spectrum |
| CN105466453A (en) * | 2015-11-19 | 2016-04-06 | 中国民用航空总局第二研究所 | On-line monitoring system of navigation equipment and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 朱文英: "FFT+FT频谱校正精度分析及其在动力总成振动测试中的应用", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 谭思炜 等: "全相位FFT相位差频谱校正法改进", 《系统工程与电子技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505505A (en) * | 2017-08-18 | 2017-12-22 | 国家电网公司 | A kind of digitalized electrical energy meter and its metering method for being applied to a variety of loads in scene |
| CN109703787A (en) * | 2018-12-11 | 2019-05-03 | 上海航天控制技术研究所 | A kind of method for diagnosing faults of near-earth satellite three axis magnetometer data validity |
| CN110376497A (en) * | 2019-08-12 | 2019-10-25 | 国网四川电力服务有限公司 | Low-voltage distribution system series fault arc identification method based on full-phase deep learning |
| CN110376497B (en) * | 2019-08-12 | 2022-05-13 | 国网四川电力服务有限公司 | Low-voltage distribution system series fault electric arc identification method based on full-phase deep learning |
| CN112083444A (en) * | 2020-08-19 | 2020-12-15 | 中国民用航空总局第二研究所 | Low-latitude airport ionosphere short-time prediction method considering plasma bubbles |
| CN112083444B (en) * | 2020-08-19 | 2021-06-08 | 中国民用航空总局第二研究所 | Low-latitude airport ionosphere short-time prediction method considering plasma bubbles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106093569B (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2013388670B2 (en) | Determining a health condition of a structure | |
| CN106093569A (en) | Navigation signal measuring method, system and navigator inline diagnosis method, system | |
| Gillich et al. | Early structural damage assessment by using an improved frequency evaluation algorithm | |
| CN107918156A (en) | Detect the method and device of subsea node collection earthquake data polarity | |
| Vuan et al. | Improving the detection of low‐magnitude seismicity preceding the Mw 6.3 L’Aquila earthquake: Development of a scalable code based on the cross correlation of template earthquakes | |
| CN103543026B (en) | Method for identifying structural damage based on vibration transmissibility function and support vector machine | |
| KR101303417B1 (en) | Information processing device, information processing method, and storage medium | |
| CN114218778A (en) | Method and device for analyzing sonic boom test data | |
| CN108387757B (en) | Method and apparatus for detecting moving state of movable device | |
| CN110197133A (en) | It will test the method and apparatus that waveform is aligned | |
| CN106556877A (en) | A kind of earth magnetism Tonghua method and device | |
| CN104535082B (en) | A kind of method that inertial navigation components performance is judged based on flight test and theoretical calculation | |
| CN105910622A (en) | System for comprehensive testing of performance of gyro combination and testing method thereof | |
| Zeng et al. | An interpretable method for operational modal analysis in time‐frequency representation and its applications to railway sleepers | |
| CN107066302A (en) | Defect inspection method, device and service terminal | |
| CN107247279B (en) | There are the time difference system positioning correction methods under station site error | |
| CN100498229C (en) | Method for processing periodic error in inertial components | |
| CN111221038A (en) | Method and device for quantitatively predicting thickness of thin reservoir | |
| CN114139105A (en) | Fast sound ray tracing algorithm based on polynomial fitting | |
| JP2019536045A (en) | Static state determination method and apparatus | |
| EP3923236A1 (en) | Image-processing device, image-processing method, and image-processing computer program | |
| CN110033088B (en) | Method and device for estimating GPS data | |
| CN106154057A (en) | A kind of method by changing emf probe position research probe micro-disturbance | |
| CN107192550B (en) | Order analysis system | |
| CN105137480A (en) | Method and apparatus for determining pre-stack time migration velocity of VTI medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |