CN102654584B - Method for processing real time data of lunar satellite microwave detector - Google Patents
Method for processing real time data of lunar satellite microwave detector Download PDFInfo
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Abstract
The invention provides a method for processing real time data of a lunar satellite microwave detector. The method comprises the following steps of: receiving an original bit-stream data transmitted by a satellite in real time; performing frame data processing on the original bit-stream data; extracting microwave detector data from the original bit-stream data; unpacking the data to obtain data blocks; carrying out physical quantity conversion and processing on the data blocks to obtain a format applicable to display, and displaying the data in a manner easy to be recognized by human eyes; analyzing the displayed data, and judging whether the data is normal or not; and when the data is judged to be abnormal, processing the data by using corresponding measures according to the types of the data. The processing method can process and analyze the scientific data and engineering data which are detected by the lunar satellite microwave detector in real time, so that engineering technical staffs can easily monitor the state of the detector and process abnormal condition.
Description
Technical field
The present invention relates to a kind of disposal route of satellite equipment data, particularly a kind of disposal route for moonik Microwave sounder (MRM) real time data.
Background technology
Lunar exploration engineering is the environment for surveying the moon, the systematization engineering of resource.In whole lunar exploration engineering system, mainly comprise moonik, land station, the departments such as floor control master station.Wherein, in moonik, be equipped with various science load, for surveying various environment, the resource data of moonik place track and moonscape.Land station sets up data receiver subsystem, for from satellite reception, process various detection datas.Floor control master station sets up operational management subsystem (OMS system), whether normal for monitor in real time the state of satellite and science loading device thereof by the detection data after processing, and send in real time operational order to adjust, to control the duty of satellite and science load thereof.
The science load of installing on lunar resources exploration satellite is the detector with scientific exploration ability carrying on satellite.The operational management subsystem arranging by floor control master station shows it is one of main contents of moonik science load operation management to the real time monitoring of this detector data, its objective is by the real time monitoring to detector data and show judgement detector duty, interpretation detector data quality, finds in real time detector operation irregularity and processes.The real time monitoring of detector data shows it is mainly to process the former bag of scientific exploration instrument downlink data, resolves science data and project data, to science data with project data monitors and interpretation.
The science load being arranged on lunar resources exploration satellite mainly comprises space environment load, and it,, for analyzing the space environment feature of lunar orbit, carries out the demand analysis of space environment detection, to complete lunar orbit space environment, surveys.The features such as Microwave sounder (radiometer) belongs to a kind of in space environment load, is a kind of reception and the high sensitive receiver of the random microwave noise radiation of low level that recorded matter self is launched, and it has highly sensitive, and self power is little.
As a rule, the real time data content that Microwave sounder obtains is various, and data volume is large, thereby is difficult to comprehensive, intuitive and accurate these data of real-time demonstration.The data that directly obtain can not intuitively reflect technical indicator separately, make technician be difficult to the implication of accurate Identification Data.Every data to display all need to arrange rational with reference to span, and abnormal data are arranged to auto-alarm function, so that the supervision instrument of land station and technician discover unusual condition in real time, take in time counter-measure.Therefore, show and monitor that these real time datas itself just have larger technical difficulty.
On the other hand, land station after receiving the data of Microwave sounder needs data to show in real time, so that show comprehensively, accurately, in real time in land station every data that Microwave sounder obtains, monitor that in real time whether the value of every data is in normal range, thereby whether each parts of reflection satellite and load thereof are in normal duty and operation conditions.Like this, ground scientific research personnel could grasp the real-time working state of detection instrument at any time, and takes in time counter-measure to adjust detection mode.
But, in prior art, still do not meet the technology of the processing for moonik Microwave sounder real time data, demonstration and the supervision of above-mentioned requirements, cause accurately reflecting duty, operation conditions and the data snooping situation to moon top layer of each building block of satellite and load thereof.
Summary of the invention
The object of this invention is to provide a kind of disposal route for moonik Microwave sounder real time data, the method can be the real time data processing of Microwave sounder the form for ease of showing, by multiple mode intuitively, show, and the every data of real time monitoring whether the duty of abnormal, detection instrument and result of detection whether in normal range and according to the running status that monitors result adjustment and control load.
A kind of method that moonik Microwave sounder real time data is processed that the present invention proposes, is characterized in that, the method comprises the following steps:
Step 6, the data block that step 5 is obtained is carried out physical quantity conversion;
Step 7, the data by step 6 after conversion show in client;
Step 8, to the data analysis showing, judges that these data are normal or abnormal;
Step 9, according to the analysis result of described step 8, when being judged as data exception, according to the difference of data type, adopts corresponding counter-measure to process.
The above-mentioned data processing method proposing by the present invention, whether the real time data of can real-time inspection moonik Microwave sounder obtaining normal, and and then judge that whether Microwave sounder work normal so that take in time counter-measure.
Accompanying drawing explanation
Fig. 1 is the processing flow chart of Microwave sounder real time data of the present invention.
The displaying that Fig. 2 is exemplary the display format of Microwave sounder science data.
The displaying that Fig. 3 is exemplary the display format of Microwave sounder project data.
Embodiment
For making the object, technical solutions and advantages of the present invention more cheer and bright, below in conjunction with embodiment and with reference to accompanying drawing, the present invention is described in more detail.
Paper is the composition and working principle of moonik Microwave sounder once.
Moonik Microwave sounder is by antenna element, microwave receiver unit forms, wherein said antenna element comprise that frequency splits to moon observation antenna and cold empty calibration antenna, described microwave receiver unit comprises observation/calibration selector switch, the high temperature reference source forming with matched load and front-end amplifier combination, frequency mixer, medium and low frequency amplifier, the video amplifier, the building blocks such as power module, wherein, front-end amplifier combination and frequency mixer form low-noise preamplifier combination, described to observing antenna and cold empty calibration antenna by " observation/calibration " switching over the moon, and be connected with the microwave receiver of respective frequencies respectively.
During Microwave sounder work, high temperature reference source adopts the matched load of real time temperature measurement that high temperature calibration reference is provided, the bright temperature of background radiation that low temperature reference source adopts cold empty calibration antenna to obtain cold sky is calibrated reference as low temperature, calibration equation according to high and low temperature calibration with reference to definite Microwave sounder, according to described calibration equation, the bright temperature of lunar soil (brightness temperature) that just can obtain moon observation antenna Microwave sounder is carried out Registration, and the brightness temperature here refers to the energy work rate of object unit area unit solid angle radiation under a certain frequency.Observation/calibration selector switch, except connecting moon observation antenna, is also connected respectively cold empty calibration antenna and inner matched load with the fixed cycle of 11.6 seconds.Under normal circumstances, when the sun, the earth, galactic center do not enter in calibration antenna field range, the brightness temperature signal of cold empty calibration antenna input 2.7K (Kelvin) is calibrated reference as low temperature; And the equivalent luminance temperature signal of matched load input 300K left and right is calibrated reference as high temperature.
Moonik enters after lunar orbit, and Microwave sounder starts normal operation.The microwave signal from Ji Ci top layer, moon top layer to moon exploring antenna reception of antenna element, the cold empty radiation signal of cold empty calibration antenna reception, matched load (high temperature reference source) sends electromagnetic radiation (cold empty data and high temperature reference source data are called calibration data), through " observation/calibration " switch to the moon observation data and calibration data carry out optionally open-minded, and will to the moon observation signal and rate-aided signal by certain frequency, be transferred to described microwave receiver unit, after processing, microwave receiver high-frequency current is converted into moon observation branch road, the magnitude of voltage of cold empty antenna branch and thermal source branch road, wherein, the brightness temperature of radiation signal and the conversion formula of magnitude of voltage are V
out=aT
iN+ b, wherein a and b are for needing the coefficient of calibration, V
outfor magnitude of voltage, T
iNfor bright temperature size.Then carry out mould/number (A/D) conversion, the binary observation data obtaining and calibration data are squeezed into science data bag.
In addition, in microwave receiver, be also designed with temperature measuring circuit, so that being carried out to Real-Time Monitoring, the working temperature of 28 key point positions of easy temperature influence in antenna element and receiver (comprises reference voltage, symbiosis becomes 32 data), after the temperature data that measured inside thermometric pastes point quantizes, also squeeze under science data bag and pass, for the scaled correction of measurement data provides reference.
Conventionally, the real time data content that Microwave sounder obtains comprises science data and project data, respectively in order to monitor the operation health status of data snooping situation, duty and the instrument each several part of load.
Wherein, the science data of Microwave sounder are the science amounts with obvious physical significance, by Microwave sounder, are collected.In the present invention, the science data that Microwave sounder collects comprise the magnitude of voltage to moon observation branch road, cold empty antenna branch, the output of thermal source branch road, and the inner thermometric of Microwave sounder pastes the temperature value of point.
The project data of Microwave sounder refers to when moonik operation on orbit, self the working status parameter being gathered by Microwave sounder, what project data showed is that (described passage refers to different frequencies to each frequency channel of detection instrument, each frequency has a set of receiving system, comprise three branch roads, these three branch roads refer to that in each passage, receiver receives from three kinds of different input sources (cold empty calibration antenna, thermal source, to moon observation antenna) signal) calibration branch road and survey the hardware effort pattern of branch road, running software situation etc., for reflect the duty of detection instrument comprehensively.Described project data comprises two aspects: calibration engineering parameter and to moon engineering parameter, and calibration engineering parameter comprises: timing code, mode of operation counting controlling value, AD (analog to digital converter) malfunction monitoring sign, data buffer is full up sign, data are injected successfully sign, warning mark, reset count sign, power module state, each passage mode of operation, the empty bias voltage of each passage cold, each passage thermal source bias voltage, each passage raw data, packet sequence counting; To the moon engineering parameter comprise: timing code, mode of operation counting controlling value, AD malfunction monitoring sign, data buffer is full up sign, data are injected successfully sign, warning mark, reset count sign, power module state, each passage mode of operation, each passage AGC, each passage bias voltage, each passage raw data, packet sequence counting.
By the interpretation to above-mentioned all types of data, just can understand loading device history and current running status and detection event, and can carry out real-time control load and adjust detection mode according to sentence read result.
Fig. 1 has shown according to the processing flow chart of Microwave sounder real time data of the present invention.As shown in Figure 1, the invention provides a kind of method of the data of Microwave sounder being carried out to real-time processing, the method comprises the following steps:
Described step 2 is further comprising the steps:
Step 2.1, frame synchronization: search the frame synchronization head " 1ACFFC1D " in original bit stream data by bit (bit), start to intercept 512 bytes from frame synchronization head and form a plurality of initial data frame;
Step 2.2, goes to disturb: by frame synchronization 508 later bytes in the scrambler of 508 bytes and initial data frame, carry out one by one exclusive-OR operation, so that initial data frame is gone to disturb;
Step 2.3, RS decoding: the RS code that spends last 64 bytes in the initial data frame (512 bytes) after disturbing carries out RS decoding to initial data frame, and record the data after RS decoding, generate the quality of data information (first byte represents wrong bit number, and second byte represents error correction rate) of two bytes simultaneously;
Step 2.4, data framing: by the Frame after RS decoding (512 byte) with
It is the one-tenth frame data of 514 bytes that the quality of data information of described two bytes forms size.
According to the pseudo channel information becoming in frame data structure, be specified to the pseudo channel comprising in frame data, described pseudo channel is a kind of data-transmission mode of ground and satellite agreement, different data contents transmits in different pseudo channels, such as, in the present invention, set pseudo channel A1 for the load source bag data of transmission delay, pseudo channel C is for transmitting real-time load source bag data (A1 and C are the virtual channel identifications of arranging in advance), for A1 and C pseudo channel, to in the one-tenth frame data that receive, remove frame synchronization head, 436 valid data bytes after virtual channel identification (10 byte) and RS code are taken out, form pseudo channel data separately, and form pseudo channel data framing data statistics information simultaneously, described statistical information comprises the number that becomes frame data in pseudo channel data, and the information such as discrete date frame information (such as number and the frame number of discrete date frame) in one-tenth frame data stream.
The data of Microwave sounder are included in A1 and C pseudo channel, according to useful load application identities symbol, the pseudo channel data of separating after frame are along separate routes decomposed and extracted, described useful load application identities symbol is for indicating the load source of data, indicate that these data are to come from Microwave sounder, or other load.The data source APMB package that the Microwave sounder data that extract from A1 and C pseudo channel is formed to binary format, and in the quality of data information of last interpolation one byte of each source APMB package (being wrong bit number during data RS decoding in the APMB package of source), formation source bag data.The source of Microwave sounder is wrapped data based data identifier and is divided into section's cosmogony bag data and engineering source bag data.
Wherein, the form of Microwave sounder section cosmogony bag data is:
The form of Microwave sounder engineering source bag data is:
Wherein, in each project data source bag of Microwave sounder, include 15 project data piece: MRM1, MRM2 ..., MRM15.
In the process receiving in real time data, in order to improve the quality of reception of data, the original bit stream data that satellite passes down can be received by two or more land stations simultaneously, and the data content that each land station receives is identical.When the quantity of land station is while being two or more, before source bag data are unpacked, the source bag data that can receive described two or more land stations be optimized processing, specific as follows:
The optimization of source bag data refers in the identical Microwave sounder source bag data of two or more packet sequence control codes, selects best one of the quality of data to carry out subsequent treatment.Optimization process is as follows:
The Microwave sounder source bag data that Different Ground station is received and obtained after above-mentioned steps 2-4 processes, sort respectively according to the packet sequence control code in above-mentioned packet format, and form the sequence report of Microwave sounder source bag data.Microwave sounder source bag data after the sequence of Different Ground station are preferentially merged, be about to according to packet sequence control code, be arranged in a Microwave sounder source packet sequence from the Microwave sounder source bag data at Different Ground station, then with the Microwave sounder source bag quality of data, be preferably principle, according to described quality of data information, the source bag that the quality of data in each packet sequence control code is best remains, and forms a new complete Microwave sounder source packet sequence sorting according to packet sequence control code.
Certainly, when the quantity of ，Dang land station is two or more in actual applications, difference according to the actual requirements, source bag data that also can Bu Dui land station are optimized.
The unpacking of section's cosmogony bag data processed and to be referred to section's cosmogony bag data (or source bag data) after optimizing are spliced, form the data division of MRM science data piece: (wherein 6 is observation data by the data in the continuous section's cosmogony bag data of 7 packet sequence control codes, 1 is corresponding calibration data) be stitched together, as the data division of a MRM science data piece.Each source bag data identifies by the grouping sign in packet sequence control code " * * ": in the situation that packet sequence control code is continuous, grouping sign " * * " is that " 01 " is expressed as first source bag in 7 conjoint data source bags in MRM science data piece, " 00 " is expressed as the source bag that is connected of the centre of removing first and last in the bag of 7 conjoint data sources, and " 10 " are expressed as 7 last sources in the bag of conjoint data sources and wrap.
Then calculate the quality state code of each science data piece: quality state code refers to represent the ascII code of this group science data quality, characterize as the bit error rate of source bag data, whether have the information such as packet loss.
Finally the quality state code combination of the data division of MRM science data piece and each science data piece is obtained to a complete MRM science data piece.
The unpacking of engineering source bag data processed and referred to engineering source bag data (or source bag data) after optimizing are carried out to the extraction of data block.Specifically comprise the following steps:
Calculate the acquisition time code of every group of project data: the timing code of carrying in the bag data of engineering source is the acquisition time code of the 1st group of data in 15 groups of project data, and the acquisition time code of respectively organizing afterwards data adds 1s in order successively.
The content of the acquisition time code of every group of project data, every group of project data is combined successively respectively and obtains a plurality of project data pieces, that is to say, each project data piece comprises 6 byte time codes and 32 byte engineering parameters.
Like this, source bag data, through unpacking after processing, form respectively corresponding science data piece and project data piece.
Step 6, the data block that step 5 is obtained is carried out physical quantity conversion.
As previously mentioned, the data of moonik Microwave sounder comprise science data and project data.For these two kinds of different data types, corresponding disposal route is also different.Introduce respectively the disposal route of two kinds of data types below.
(1) because the data of storing in science data piece are the binary data after A/D conversion, therefore, need to carry out physical quantity conversion to the magnitude of voltage to moon observation branch road, cold empty antenna branch, the output of thermal source branch road in science data piece, become the decimal number with certain physical significance.
When the physical quantity conversion of carrying out temperature, first binary number is converted to metric magnitude of voltage, then according to following formula, be converted to physical temperature value:
T＝aV
2+bV+c， (1)
Wherein, T is physical temperature, and V is magnitude of voltage, and a, b, c are known coefficient.
(2) self the working status parameter that the project data in the present invention refers to that Microwave sounder while working in moonik gathers, each working status parameter conventionally adopts and is easy to storage, but the data layout that is difficult for human eye Direct Recognition, as the forms such as sexadecimal, scale-of-two store.Therefore, to the processing of project data, be mainly to change by physical quantity, by each engineering parameter in project data, by the format conversion that is difficult for eye recognition, be to be easy to the form that eye recognition goes out its physical significance, thereby be convenient to observation personnel, can be easy to identify the physical meaning that these data embody.For example, sexadecimal is converted to the decimal system or binary format, or the physical quantitys such as Binary Conversion is decimal format are changed.
Table 1 shown partial parameters in a project data of Microwave sounder raw data, process after the example signal of data and required disposal route.
Table 1
Step 7, shows respectively in client the data after described physical quantity conversion, and the data after described physical quantity conversion are shown to be easy to the mode of eye recognition, and in this step, according to the difference of data type, corresponding display packing is also different.
(1), after the science data that by abovementioned steps, Microwave sounder passed down are in real time processed, need to the science data after processing be shown, so that observation personnel are easy to identify the physical meaning that these science data embody.In the present invention, science data preferably adopt figure and two kinds of display formats of number list.
The figure of described science data shows and comprises: take magnitude of voltage as ordinate, time series is horizontal ordinate, according to the magnitude of voltage to moon observation branch road, cold empty antenna branch, the output of thermal source branch road in the science data after processing, the magnitude of voltage that identifies different branch output with different curves is made corresponding coordinate figure; A plurality of cold empty antenna branch magnitude of voltage that each frequency channel receiver of corresponding time point is exported is (in order to make the data of collection more accurate, at some time points, can gather a plurality of values, such as 5), a plurality of thermal source branch voltage value (such as 5), a plurality of moon observation branch voltage value (such as 40) is averaged respectively; The average voltage level of three branch roads of corresponding time point is marked in coordinate diagram with the dotted line of different colours respectively.
Take temperature value as ordinate, and time series is horizontal ordinate, pastes the temperature value of point make corresponding coordinate figure according to the inner thermometric of the Microwave sounder in the science data after processing; 32 temperature values of corresponding time point are marked in coordinate diagram with the dotted line of different colours respectively.
Fig. 2 A has shown the figure display format of Microwave sounder science data.In Fig. 2 A the first half, by the calibration data in the bag of science data source and to the moon observation data be presented under the same coordinate system, horizontal ordinate represents the time, ordinate represents magnitude of voltage, and wherein the curve of different colours represents from the magnitude of voltage through physical quantity conversion to the signal of the different branch such as the moon observation antenna, cold empty antenna and thermal source.In Fig. 2 A the latter half, 32 temperature values in data source bag are presented under the same coordinate system, horizontal ordinate represents the time, and ordinate represents temperature.Different colours represents different temperatures value.
Fig. 2 B has shown the data list form of Microwave sounder science data, with the form of form, list the science data that receive, in Fig. 2 B, calibration data and to the moon observation data can be separately with the form of form, show, in the upper left corner at interface shown in Fig. 2 B, can switch.(1) show the moon during observation data, first, list respectively the mode of operation of each frequency channel, to moon AGC, to the moon bias voltage, power supply status and other parameters.Below parameter display, 32 temperature measurement data are listed respectively with decimal system numerical value.Below showing in Temperature numerical, the voltage to the output of moon observation branch road of each passage is listed respectively with decimal system numerical value.(2), while showing calibration data, first, list respectively mode of operation, calibration branch road AGC, calibration branch road bias voltage, power supply status and other parameters of each frequency channel.Below parameter display, 32 temperature measurement data are listed respectively with decimal system numerical value.Below showing in Temperature numerical, the cold empty antenna branch data of each frequency channel and thermal source are propped up to circuit-switched data and with decimal system numerical value, list respectively.
(2), in the present invention, Microwave sounder project data preferably adopts number list and two kinds of forms of figure to show.When number list shows, directly data value is wrapped in the engineering source after Graphics Processing.While showing with figure, the data in a project data source bag are presented under the same coordinate system.In addition, convenient for ease of ground surveillance, in showing, number list can increase the contents such as value bound and warning bound, and when project data exceeds bound, system is carried out automatic alarm, and during warning, numerical value can be marked red.
The demonstration that Fig. 3 A is exemplary the curve map of project data after treatment.In figure, horizontal ordinate is packet sequence value, and ordinate is numerical value, and the curve in figure represents the variation tendency of partial parameters in engineering parameter.
The demonstration that Fig. 3 B is exemplary the number list schematic diagram of project data after treatment.
Step 8, to the data analysis showing, judges that these data are normal or abnormal.
As mentioned above, disposal route and the display packing of science data and project data have been introduced respectively.After data are processed and displayed; need to be to the data analysis showing; to judge that these data are normal or abnormal, so that the real-time working state of monitoring Microwave sounder, and then the abnormal conditions that can occur for real time data are taked corresponding counter-measure.
In this step, according to the difference of data type, corresponding criterion is also different.
(1) for real-time science data, its discrimination standard is: when described project data is normal, described each branch road output voltage values (0V～10V) in normal range, and thermal source branch voltage > is to the cold empty branch voltage of moon observation branch voltage >, if science data meet above-mentioned standard in real time, judge that described science data are normal; Otherwise, when described project data is normal, described each branch road output voltage values exceeds normal range, and each branch voltage magnitude relationship is not that thermal source branch voltage > observes the cold empty branch voltage of branch voltage > to the moon, judges that described science data are abnormal.
(2), for real-time engineering data, its discrimination standard is that each parameter value, in normal span and under the default duty of Microwave sounder, judges that this project data are normal in described project data; In described project data, certain parameter exceeds normal span or when inconsistent with the default duty of Microwave sounder, judgement this project abnormal parameters.
Table 2 has shown the part engineering parameter of Microwave sounder and the example of normal span thereof.
Table 2
Step 9, according to the analysis result of described step 8, when being judged as data exception, according to the difference of data type, adopts corresponding counter-measure to process.
In this step, according to the difference of data type, corresponding counter-measure is also different.
(1), for science data, after analyzing the science data that detect when abnormal, can reporting the pending data analysis of instrument development side by total activation, take again corresponding counter-measure, such as closing load power supply, restarting load etc.
(2) for project data, when analyzing the engineering parameter detecting, occur when abnormal, take again corresponding counter-measure after can reporting the pending data analysis of instrument development side by total activation.
Table 3 has shown the example of the part engineering parameter of Microwave sounder and counter-measure when abnormal thereof.
Table 3
It should be noted that when real time data is abnormal, specifically how taking counter-measure is not emphasis of the present invention, therefore do not describe in detail.Goal of the invention of the present invention is how the real time data of Microwave sounder is carried out to real-time processing, demonstration and analysis so that surface work station can be in time, find accurately, judge abnormal conditions, and then can take in time corresponding counter-measure.
Therefore; the present invention is intended to protect a kind of disposal route to moonik Microwave sounder real time data; the method is by carrying out respectively data processing and analysis to the science data of moonik Microwave sounder real-time detection and project data; and show in real time to be easy to the mode (as curve, form etc.) of eye recognition, thereby be convenient to find in time the unusual condition of detector and take counter-measure.
Institute's above-mentioned embodiment of the present invention that it should be understood that is only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore any modification of, making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in without departing from the spirit and scope of the present invention in the situation that.In addition, claims of the present invention are intended to contain whole variations and the modification in the equivalents that falls into claims scope and border or this scope and border.
Claims (13)
1. a method of moonik Microwave sounder real time data being processed, is characterized in that, the method comprises the following steps:
Step 1, land station receives the original bit stream data that satellite passes down in real time;
Step 2, carries out framing data processing to the original bit stream data that receive, and obtains a plurality of one-tenth frame data, and described framing data processing comprises frame synchronization, goes to disturb, RS decoding and data framing;
Step 3, according to the virtual channel identification of carrying in described one-tenth frame data, is extracted into the data of specific virtual channel in frame data, and the valid data byte of taking out wherein forms pseudo channel data;
Step 4, according to the useful load application identities symbol of prior agreement, the data of Microwave sounder are out formed to the data source APMB package of binary format from pseudo channel extracting data, and in the quality of data information formation source bag data of last interpolation one byte of each source APMB package;
Step 5, the source bag data that step 4 is obtained unpack processing, obtain a plurality of data blocks, described data block comprises science data and project data, described science data comprise the magnitude of voltage to moon observation branch road, cold empty antenna branch, the output of thermal source branch road, and inner 32 thermometrics of Microwave sounder paste the temperature value of point;
Step 6, the data block that step 5 is obtained is carried out physical quantity conversion;
Step 7, the data by step 6 after conversion show in client;
Step 8, to the data analysis showing, judges that these data are normal or abnormal;
Step 9, according to the analysis result of described step 8, when being judged as data exception, according to the difference of data type, adopts corresponding counter-measure to process;
In described step 6, for science data, carry out following physical quantity conversion:
For the temperature value in described science data, first binary science data are converted to decimal system numerical value, then according to following formula, decimal system numerical value is converted to physical temperature value:
T=aV
2+bV+c，
Wherein, T is physical temperature, and V is decimal system numerical value, and a, b, c are known coefficient; Magnitude of voltage in described science data, is converted into decimal format;
For project data, carry out following physical quantity conversion: hexadecimal project data is converted to the decimal system or binary format, binary project data is converted to decimal format.
2. disposal route according to claim 1, described project data comprises two aspects: calibration engineering parameter and to moon engineering parameter, wherein,
Described calibration engineering parameter comprises: timing code, mode of operation counting controlling value, AD malfunction monitoring sign, data buffer is full up sign, data are injected successfully sign, warning mark, reset count sign, power module state, each passage mode of operation, the empty bias voltage of each passage cold, each passage thermal source bias voltage, each passage raw data and packet sequence counting;
Described to the moon engineering parameter comprise: timing code, mode of operation counting controlling value, AD malfunction monitoring sign, data buffer is full up sign, data are injected successfully sign, warning mark, reset count sign, power module state, each passage mode of operation, each passage AGC, each passage bias voltage, each passage raw data and packet sequence counting.
3. method according to claim 1, is characterized in that, described step 2 is further comprising the steps:
Step 2.1, frame synchronization: search the frame synchronization head in described original bit stream data by bit, start to intercept 512 bytes from frame synchronization head and form a plurality of initial data frame;
Step 2.2, goes to disturb: by frame synchronization 508 later bytes in the scrambler of 508 bytes and described initial data frame, carry out one by one xor operation, so that described initial data frame is gone to disturb;
Step 2.3, RS decoding: the RS code that spends last 64 bytes in the initial data frame after disturbing carries out RS decoding to initial data frame, and record the data after RS decoding, generate the quality of data information of two bytes simultaneously;
Step 2.4, data framing: it is the frame data that become of 514 bytes that the Frame after RS decoding is formed to size with the quality of data information of described two bytes.
4. method according to claim 1, is characterized in that, the valid data byte in described step 3 is into removes the data after frame synchronization head, virtual channel identification and RS code in frame data.
5. method according to claim 1, it is characterized in that, described step 3 further comprises the step that is formed into frame data statistical information, and described statistical information comprises the number that becomes frame data in pseudo channel data, and becomes discrete date frame information in frame data stream.
6. method according to claim 1, is characterized in that, the described quality of data information in described step 4 is wrong bit number during data RS decoding in the APMB package of source.
7. method according to claim 1, it is characterized in that, described source is wrapped data based data identifier and is divided into section's cosmogony bag data and engineering source bag data, wherein said section cosmogony bag data comprise successively the synchronous code of 2 bytes, the bag of 2 bytes sign, the packet sequence control code of 2 bytes, the science data territory of the packet length code of 2 bytes, 496 bytes and the quality state code of 2 bytes; Bag data in described engineering source comprise successively the synchronous code of 2 bytes, the bag of 2 bytes sign, the packet sequence control code of 2 bytes, the project data of the packet length code of 2 bytes, 496 bytes and the quality state code of 2 bytes, and the project data of described 496 bytes is further divided into 15 groups of project data.
8. method according to claim 1, it is characterized in that, if the quantity of described land station is two or more, in order to improve the Disposal quality of data, in described step 5, before being unpacked, source bag data further comprise the step that the source bag data of two or more land stations is optimized to processing.
9. method according to claim 8, is characterized in that, described optimization process is in the bag data of the identical source of two or more packet sequence control codes, selects best one of the quality of data to carry out subsequent treatment.
10. method according to claim 7, is characterized in that, described in unpack process further comprising the steps:
Step 5.1, is stitched together the science data in the continuous section's cosmogony bag data of 7 packet sequence control codes, as the data division in a science data piece; Calculate the quality state code of each science data piece; Finally described data division and corresponding quality state code combination are got up to obtain a complete science data piece;
Step 5.2, calculates the acquisition time code of every group of project data; The content of the acquisition time code of every group of project data, every group of project data is combined successively respectively and obtains a plurality of project data pieces.
11. methods according to claim 10, it is characterized in that, in described step 5.2, the acquisition time code of the 1st group of project data is the timing code of carrying in the bag data of described engineering source, and the acquisition time code of respectively organizing afterwards project data in same engineering source bag data adds 1 second in order successively.
12. methods according to claim 1, is characterized in that, in described step 7, with figure and two kinds of display formats of number list, show science data and project data, wherein,
The figure of described science data shows and comprises: take magnitude of voltage as ordinate, time series is horizontal ordinate, and the average voltage level of three branch roads of corresponding time point is marked in coordinate diagram with the curve of different colours respectively; Take temperature value as ordinate, and time series is horizontal ordinate, and 32 temperature values in the science data of corresponding time point are marked in coordinate diagram with the dotted line of different colours respectively.
13. disposal routes according to claim 1, wherein,
To the analysis of described science data, be:
When described project data is normal, if described each branch road output voltage values is in normal range, and thermal source branch voltage >, to the cold empty branch voltage of moon observation branch voltage >, judges that described science data are normal, otherwise abnormal;
To the analysis of described project data, be:
In described project data, each parameter value, in normal span and under the default duty of Microwave sounder, judges that this project data are normal; In described project data, certain parameter exceeds normal span or when inconsistent with the default duty of Microwave sounder, judgement this project abnormal parameters.
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| CN103472436B (en) * | 2013-08-30 | 2015-12-02 | 中国科学院国家天文台 | The disposal route of lunar surface rover moon sight radar real time data |
| CN103546242A (en) * | 2013-10-25 | 2014-01-29 | 中国科学院对地观测与数字地球科学中心 | Method for detecting error rate of original data of remote sensing satellite |
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