CN104270220B - A method of for analyzing IRIG-B time symbols - Google Patents
A method of for analyzing IRIG-B time symbols Download PDFInfo
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Abstract
The invention belongs to the technical fields of time signal analysis.In order to solve the problems, such as that usage time accuracy can not assess IRIG B code time synchronizing signals, the present invention proposes a kind of method for analyzing IRIG B time symbols, and this approach includes the following steps：(1) IRIG B time symbols are inputted；(2) split-second precision label is provided；(3) the IRIG B time symbols of capture input, and according to the split-second precision label of offer, the time response of the IRIG B time symbols is analyzed.The method of the present invention, analyzes the time response of IRIG B time symbols, can be assessed IRIG B code time synchronizing signals by the result of the analysis, to judge the quality of IRIG B code time synchronizing signal quality.
Description
Technical field
The invention belongs to the technical fields of time signal analysis, and in particular to a kind of for analyzing IRIG-B time symbols
Method.
Background technology
IRIG (Inter Range Instrumentation Group) is the abbreviation of U.S. target range instrument group, IRIG codes
It is a kind of time standard that the U.S. target range commandant committee formulates, is now widely used in the numerous areas such as military affairs, business, industry.
There are four types of parallel binary timing code format and six kinds of serial binary timing code formats altogether for IRIG codes, wherein the most commonly used is
IRIG-B timing code formats.IRIG-B codes are the serial time codes of one frame per second, and each frame includes 100 IRIG-B timing codes
The width of member, each time symbol is 10ms.It is defined according to the standard of IRIG-B codes, IRIG-B time symbols have 3 types, i.e.,
P symbols, 1 symbol and 0 symbol, P symbols are flag bit, and 1 symbol indicates that binary one, 0 symbol indicate binary zero, IRIG-B
Code is exactly the transmission by the combination finishing time information of these three symbols.IRIG-B time symbols are pulse signal, Ke Yitong
Cross AC (Alternating Current, exchange) or the pattern transmission of DC (Direct Current, direct current).Fig. 2 is with DC moulds
The IRIG-B codes of formula transmission and the information definition of various symbols, P symbols are that the width of high level accounts for 8ms, and low level width accounts for
The symbol of 2ms；1 symbol is that the width of high level accounts for 5ms, and low level width accounts for the symbol of 5ms；0 symbol is the width of high level
Degree accounts for 2ms, and low level width accounts for the symbol of 8ms.Fig. 3 is that the information of the IRIG-B codes and various symbols that are transmitted with AC patterns is fixed
Justice, P symbols are that the width of amplitude accounts for 8ms, and the width of low amplitude value accounts for the symbol of 2ms；1 symbol is that the width of amplitude accounts for 5ms,
The width of low amplitude value accounts for the symbol of 5ms；0 symbol is that the width of amplitude accounts for 2ms, and the width of low amplitude value accounts for the symbol of 8ms.
IRIG-B codes have the characteristics that carry contain much information, high-resolution, nuclear interface standardizing and international, be suitable for remote
The information of distance is transmitted, and has two kinds of transmission modes of DC patterns and AC patterns.With current electronic technology make rapid progress development,
Time synchronization increasingly plays the part of important role in the industries such as telecommunications, electric power, military affairs or department, excellent due to IRIG-B codes itself
More property, IRIG-B codes gradually become the preferred time synchronizing signal of clock synchronization system.
The performance of time synchronizing signal is assessed usually using time accuracy, time accuracy refers to time synchronizing signal
Time difference between current decoding time and standard testing time source, therefore time accuracy can be with measure time synchronizing signal
Precision.But sometimes because of a variety of causes, time synchronizing signal cannot be decoded, also can not just obtain time synchronizing signal and work as
Preceding decoding time leads to that time accuracy cannot be obtained, can not assess time synchronizing signal.
Invention content
In order to solve the problems, such as that usage time accuracy can not assess IRIG-B code time synchronizing signals, the present invention
A kind of method for analyzing IRIG-B time symbols is proposed, to provide a kind of way of assessment IRIG-B code time synchronizing signals
Diameter can using the method for the present invention when usage time accuracy can not assess IRIG-B code time synchronizing signals
IRIG-B code time synchronizing signals are assessed.
The method for analyzing IRIG-B time symbols of the present invention, this approach includes the following steps：
(1) IRIG-B time symbols are inputted；
(2) split-second precision label is provided；
(3) the IRIG-B time symbols of capture input, to obtain the raw information of IRIG-B time symbols, and according to offer
Split-second precision label, the time response of the IRIG-B times symbol is analyzed.
Wherein, in the step (3), after the completion of the time response analysis of the IRIG-B times symbol, when to IRIG-B
Between symbol raw information and by time response analysis code element information handled.
Wherein, the raw information to IRIG-B time symbols and the code element information processing by time response analysis are completed
Afterwards, the raw information of the IRIG-B time symbols handled and the code element information analyzed by time response are stored.This
Sample works as IRIG-B codes time synchronizing signal when something goes wrong, can play back the information of storage, to the details of abnormal symbol
It is analyzed, aids in determining whether the generation point of problem.
Wherein, the raw information to IRIG-B time symbols and the code element information processing by time response analysis are completed
Afterwards, the raw information of the IRIG-B time symbols handled and the code element information analyzed by time response are shown.It will
The information of IRIG-B time symbols intuitively shows user, user-friendly.
Wherein, in the step (3), the high level of width and symbol to the IRIG-B times symbol or amplitude
Width is analyzed, and detects the width of symbol of the width more than 13ms, symbol of the width less than 9ms, high level or amplitude
Symbol less than 1ms and the symbol that cannot be identified, and the symbol of symbol, width less than 9ms to width more than 13ms, high level
Or symbol of the width of amplitude less than 1ms is marked with the symbol that cannot be identified.
Wherein, in the step (1), the IRIG-B times symbol of input AC pattern or the IRIG-B times of DC mode
Symbol.
Wherein, in the step (2), the Big Dipper/GPS satellite time is received using the Big Dipper/GPS satellite receiver, and generate
Split-second precision label.
The method for analyzing IRIG-B time symbols of the present invention, records the original of IRIG-B code time synchronizing signals
Information, and classification marker is carried out to abnormal symbol, the symbol by width more than 13ms is labeled as W, and width is less than to the code of 9ms
Meta-tag is w, and the symbol by high level or the width of amplitude less than 1ms is labeled as x, it is impossible to which the symbol of identification is labeled as X.
The method of the present invention not only marks abnormal symbol, is also classified according to information such as symbol widths to abnormal symbol, really
The type of fixed exception symbol.IRIG-B code time synchronizing signals can be carried out by information such as the type of abnormal symbol, quantity
Assessment, to judge the quality of IRIG-B code time synchronizing signal quality.IRIG-B code time synchronizations are believed in usage time accuracy
When number being assessed, IRIG-B codes is needed to be correctly decoded, method of the invention, not needing the decoding of IRIG-B codes can be right
IRIG-B code time synchronizing signals are assessed.And the details such as type, quantity by checking abnormal symbol are
The quick positioning of IRIG-B code time synchronizing signal problems provides help.
Description of the drawings
Fig. 1 is the flow chart of the method for analyzing IRIG-B time symbols of the present invention；
Fig. 2 is that the information of the IRIG-B codes and various symbols that are transmitted with DC patterns defines；
Fig. 3 is that the information of the IRIG-B codes and various symbols that are transmitted with AC patterns defines.
Specific implementation mode
Fig. 1 is that the flow chart of the method for analyzing IRIG-B time symbols of the present invention inputs IRIG-B in step S1
Time symbol, it can also be DC patterns that the IRIG-B times symbol of input, which can be AC patterns,.
In step S2, split-second precision label is provided, the Big Dipper or GPS can be received by the Big Dipper/GPS satellite receiver
(Global Positioning System) satellite time, and generate high-precision time tag.
In step S3, IRIG-B time symbols are captured, to obtain the raw information of IRIG-B time symbols, and according to offer
Split-second precision label, the time response of IRIG-B time symbols is analyzed.IRIG-B time symbols are captured, are obtained
Then the raw information of IRIG-B time symbols is analyzed the time response of IRIG-B time symbols.To the IRIG-B times
It includes analyzing the width of symbol and the high level of symbol or the width of amplitude that the time response of symbol, which carries out analysis,.
IRIG-B time symbols are in transmission process, and by environment, transmission device or signal itself be unstable etc., factors are influenced, it may appear that
The unmatched problem of symbol width information, the unmatched problem of element position just will produce abnormal symbol, abnormal symbol meeting
Cause IRIG-B codes that can not be correctly decoded or can not decode.Abnormal symbol includes that symbol width is small more than 13ms, symbol width
In the symbol that the width of 9ms, high level or amplitude is less than 1ms and cannot identify, wherein symbol width refers to a symbol institute
Account for the width of time, such as the IRIG-B codes transmitted with DC patterns, the symbol width of a symbol refer to symbol high level or
Time shared by low level or low amplitude value of the time shared by amplitude plus symbol.The width of normal symbol is 10ms, symbol width
Validity be 9ms-13ms, between 9ms-13ms, IRIG-B times symbol can be identified and decode symbol width.Work as code
When first width is more than 13ms, the identification of IRIG-B time symbols and normal decoding can be influenced, so width to be more than to the code of 13ms
Member is considered abnormal symbol.When symbol width is less than 9ms, the identification of IRIG-B time symbols and normal decoding can be influenced,
So the symbol by width less than 9ms is considered abnormal symbol.The high level of symbol or the width of amplitude refer to symbol height
The validity width of time shared by level or amplitude, P symbols high level or amplitude be more than 7ms, 1 symbol high level or
The validity width of amplitude is 4ms-7ms, and the validity width of 0 symbol high level or amplitude is 1ms-4ms, high level or
Symbol of the width of amplitude less than 1ms is the symbol of exception, which cannot be correctly validated, also cannot correctly be solved
Code.The symbol that cannot be identified is neither normal P/0/1 symbols are not the symbol of above-mentioned three kinds of exceptions again.Width is detected first
Symbol of the degree more than 13ms, width are less than the symbol of 9ms, symbol of the width less than 1ms of high level or amplitude and cannot know
Then other symbol is marked these abnormal symbols, the symbol by width more than 13ms is labeled as W, and width is less than
The symbol of 9ms is labeled as w, and the symbol by high level or the width of amplitude less than 1ms is labeled as x, it is impossible to the symbol of identification
Labeled as X.For the symbol that width is 10ms, that is, normal symbol, it is P/0/1 directly to record IRIG-B time symbols.
It is analyzed by the time response to IRIG-B time symbols, it is normal symbol which, which has been obtained, which is abnormal symbol, and
The details such as the type of abnormal symbol.When cause IRIG-B time symbol waveforms to be disturbed due to various reasons and cannot be by just
It, can be to IRIG-B code time synchronizations by information such as abnormal type, the quantity of symbol when really decoding, or cannot be decoded
Signal is assessed, and judges the quality of IRIG-B code time synchronizing signal quality.If there is abnormal symbol, IRIG-B is indicated
Code time synchronizing signal is problematic, these abnormal symbols are recorded and classified, by checking categorized exception
The information of symbol, the problem of helping quickly to position IRIG-B code time synchronizing signals.
After the completion of step S4, the time response analysis of IRIG-B time symbols, to the original letter of IRIG-B time symbols
Breath and the code element information analyzed by time response are handled.To the processing of information in step S4, it is right in below step to be
The display and storage of information are prepared.
In step S5, the raw information to IRIG-B time symbols and the code element information by time response analysis have been handled
Cheng Hou shows the information handled, can be shown by LCD (Liquid Crystal Display) display screen
Show, IRIG-B time code element informations are intuitively showed into user, it is user-friendly.The information of display for example can be：
P0010W101P1001w1100P110000000P, for such a string of IRIG-B time symbols, P/0/1 indicates normal code
Member, " W " indicate that symbol width is more than 13ms, and " w " indicates that symbol width is less than 9ms, and " W " and " w " is equal
Indicate abnormal symbol.IRIG-B code time synchronizing signals can be commented by information such as the type of abnormal symbol, quantity
Estimate, and the information such as type, quantity of abnormal symbol also provide side for the quick positioning of IRIG-B code time synchronizing signal problems
It helps.In addition, the information of display can also include the decoded temporal information of IRIG-B time symbols.
In step S6, the raw information to IRIG-B time symbols and the code element information by time response analysis have been handled
Cheng Hou stores the information handled.When the information of storage includes original IRIG-B times code element information and IRIG-B
Between symbol carry out the later information of classification marker.In this way when IRIG-B codes time synchronizing signal when something goes wrong, by playback deposit
The IRIG-B time symbols of storage, check the details of the abnormal symbol labeled as X/x/W/w, contribute to quick positioning question.
The method for analyzing IRIG-B time symbols of the present invention, records the original of IRIG-B code time synchronizing signals
Information, and classification marker is carried out to abnormal symbol, the symbol by width more than 13ms is labeled as W, and width is less than to the code of 9ms
Meta-tag is w, and the symbol by high level or the width of amplitude less than 1ms is labeled as x, it is impossible to the symbol of identification is labeled as X,
Not only mark abnormal symbol, the width of normal symbol is 10ms, also to abnormal symbol according to the information such as symbol width into
Row classification, determines the type of exception symbol.It can be to IRIG-B code time synchronizations by information such as the type of abnormal symbol, quantity
Signal is assessed, to judge the quality of IRIG-B code time synchronizing signal quality.When usage time accuracy is to IRIG-B codes
Between synchronizing signal when being assessed, need IRIG-B codes to be correctly decoded, method of the invention does not need IRIG-B codes decoding energy
It is enough that IRIG-B code time synchronizing signals are assessed.And the details such as type, quantity by checking abnormal symbol are
The quick positioning of IRIG-B code time synchronizing signal problems provides help.The method and time accuracy of the present invention are used simultaneously,
IRIG-B codes time synchronizing signal can more fully be assessed.
Claims (3)
1. a kind of method for analyzing IRIG-B time symbols, which is characterized in that this approach includes the following steps：
(1) IRIG-B time symbols are inputted；
(2) split-second precision label is provided；
(3) the IRIG-B time symbols of capture input, to obtain the raw information of IRIG-B time symbols, and according to the height of offer
Precision Time label analyzes the time response of the IRIG-B times symbol, and according to analysis result, to exception
Symbol carries out classification marker；
(4) type and quantity based on abnormal IRIG-B time symbols, assess IRIG-B time synchronizing signals, judge
The quality of IRIG-B time synchronizing signals；
(5) raw information of the IRIG-B time symbols handled and the code element information analyzed by time response are shown
And storage；
(6) when IRIG-B codes time synchronizing signal when something goes wrong, the information based on storage, to the details of abnormal symbol
It is analyzed, determines the generation point of problem；
Wherein, the time response of the IRIG-B times symbol is analyzed, and according to analysis result, to abnormal symbol
Carry out classification marker；It specifically includes：
Width and the high level of symbol or the width of amplitude to the IRIG-B times symbol are analyzed, and detect width
The width of the symbol of symbol, width less than 9ms, high level or amplitude more than 13ms is less than the symbol of 1ms and cannot identify
Symbol, and the width of symbol to width more than the symbol of 13ms, width less than 9ms, high level or amplitude is less than 1ms's
Symbol and the symbol that cannot be identified carry out classification marker.
2. the method for analyzing IRIG-B time symbols stated according to claim 1, which is characterized in that in the step (1),
The IRIG-B times symbol of input AC pattern or the IRIG-B time symbols of DC mode.
3. the method according to claim 1 for analyzing IRIG-B time symbols, which is characterized in that the step (2)
In, the Big Dipper/GPS satellite time is received using the Big Dipper/GPS satellite receiver, and generate split-second precision label.
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| US7899619B2 (en) * | 2006-10-18 | 2011-03-01 | Schweitzer Engineering Laboratories, Inc. | Apparatus and method for transmitting information using an IRIG-B waveform generated by an intelligent electronic device |
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| CN101871976A (en) * | 2009-04-24 | 2010-10-27 | 郑州威科姆科技股份有限公司 | Power clock detecting device |
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