CN106556877B - A kind of earth magnetism Tonghua method and device - Google Patents
A kind of earth magnetism Tonghua method and device Download PDFInfo
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- CN106556877B CN106556877B CN201610888932.3A CN201610888932A CN106556877B CN 106556877 B CN106556877 B CN 106556877B CN 201610888932 A CN201610888932 A CN 201610888932A CN 106556877 B CN106556877 B CN 106556877B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/40—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for measuring magnetic field characteristics of the earth
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
Abstract
The embodiment of the invention discloses a kind of earth magnetism Tonghua method and devices, this method comprises: obtaining multiple with reference to the location information of Geomagnetic Station and the location information of tested point in the region of earth magnetism Tonghua, according to the location information of each location information with reference to Geomagnetic Station and tested point, it obtains each with reference to the distance between Geomagnetic Station and tested point information and alternate position spike information, and the distance between Geomagnetic Station and tested point information and alternate position spike information are referred to according to each, obtain each weighted value with reference to Geomagnetic Station, and then according to multiple weighted values with reference to Geomagnetic Station and multiple observation data with reference to Geomagnetic Station, determine the observation data of tested point.Influence of the different location informations with reference to Geomagnetic Station to Tonghua precision has been fully considered in the embodiment of the present invention, and alternate position spike information participates in weighted value and must be determined to preferably react the different othernesses with reference to Geomagnetic Station, to significantly improve Tonghua precision of geomagnetic diurnal change data.
Description
Technical field
The present invention relates to geomagnetic data processing technology field more particularly to a kind of earth magnetism Tonghua method and devices.
Background technique
Earth magnetic field is mainly made of main field, lithospheric magnetic field, variation magnetic field and induced magnetic field, is utilizing Geomagnetic Station
Geomagnetic observation data analysis earth's magnetic field main field spatial distribution, or analysis lithospheric magnetic field variation abnormality when, require
Removing influences caused by variation magnetic field and induced magnetic field, and external field accounts for main specific gravity in diurnal variation magnetic field, and external field mainly rises
Derived from outside of the earth, the variation and solar activity of this has close association, and external field variation is mainly shown as short term variations,
Its degree changed is limited, and the variable magnetic field of the earth has certain chaotic characteristic.
Since current Geomagnetic Station can't accomplish high density uniform fold, within a certain area, using region
Magnetic model carries out the calculating of geomagnetic observation amount, can also carry out Tonghua calculating to more station data.Currently, logical on space length
Change precision and be not able to satisfy the requirement of Tonghua error, so selecting the Geomagnetic Station for having observation data as ginseng in a certain range
Station is examined, carries out Tonghua processing using the observation data of reference station, common Tonghua method has two multinomial least square methods, songs
The methods of line fitting, there are also scholars to carry out geomagnetic data processing using weighted mean method and inverse distance weighted interpolation method.
Geomagnetic diurnal change Tonghua is the geomagnetic diurnal change value that tested point is obtained by known observational data, due to Geomagnetic Station number
It measures less and sparse different, the observational data in available no station region is calculated using geomagnetic diurnal change Tonghua.Due to earth magnetism
Tonghua calculates the influence vulnerable to many factors, for example, geological environment locating for tested point, geomagnetic index etc., and existingly
Magnetic flux method mostly uses distance weighting method to be calculated, this kind of method only accounts for distance factor, to will lead to earth magnetism day
The lower problem of Tonghua precision of parameter evidence.
To sum up, a kind of effective earth magnetism Tonghua method is needed at present, for improving Tonghua precision of geomagnetic diurnal change data.
Summary of the invention
The embodiment of the present invention provides a kind of earth magnetism Tonghua method and device, to improve Tonghua essence of geomagnetic diurnal change data
Degree.
A kind of earth magnetism Tonghua method provided in an embodiment of the present invention, comprising:
It obtains multiple with reference to the location information of Geomagnetic Station and the location information of tested point in the region of earth magnetism Tonghua；
For it is the multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station, according to it is described it is each refer to Geomagnetic Station
Location information and the tested point location information, obtain it is described it is each with reference between Geomagnetic Station and the tested point away from
From information and alternate position spike information；According to described each with reference to the distance between Geomagnetic Station and the tested point information and alternate position spike
Information obtains each weighted value with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple observation data with reference to Geomagnetic Station, determine
The observation data of the tested point.
Optionally, according to the multiple weighted value with reference to Geomagnetic Station and the multiple observation number with reference to Geomagnetic Station
According to determining the observation data of the tested point, comprising:
Elimination of rough difference is carried out to the multiple observation data with reference to Geomagnetic Station, and is filled out using Lagrange's interpolation
It fills, obtains the multiple effective observation data with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple effective observation data with reference to Geomagnetic Station,
Determine the observation data of the tested point.
Optionally, it obtains multiple with reference to the location information of Geomagnetic Station and the location information of tested point in the region of earth magnetism Tonghua
Before, further includes:
Definitely the distance between each Geomagnetic Station and tested point information in magnetic flux region；
The Geomagnetic Station for meeting preset condition with the distance between tested point information is determined as with reference to Geomagnetic Station.
Optionally, the i-th weighted value with reference to Geomagnetic Station is determined by following formula, described i-th is with reference to Geomagnetic Station
It is the multiple with reference to any of Geomagnetic Station:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor it is described i-th with reference to Geomagnetic Station with it is described to be measured
The distance between point information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point,
K is coefficient.
The embodiment of the present invention provides a kind of earth magnetism Tonghua device, comprising:
Module is obtained, it is multiple with reference to the location information of Geomagnetic Station and the position of tested point in the region of earth magnetism Tonghua for obtaining
Confidence breath；
Determine weight module, for for it is the multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station, according to institute
The location information for stating each location information with reference to Geomagnetic Station and the tested point, obtain it is described it is each with reference to Geomagnetic Station with
The distance between tested point information and alternate position spike information；According to described each with reference between Geomagnetic Station and the tested point
Range information and alternate position spike information, obtain each weighted value with reference to Geomagnetic Station；
Processing module, for according to the multiple weighted value with reference to Geomagnetic Station and the multiple with reference to Geomagnetic Station
Data are observed, determine the observation data of the tested point.
Optionally, the processing module is specifically used for:
Elimination of rough difference is carried out to the multiple observation data with reference to Geomagnetic Station, and is filled out using Lagrange's interpolation
It fills, obtains the multiple effective observation data with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple effective observation data with reference to Geomagnetic Station,
Determine the observation data of the tested point.
Optionally, it is described obtain module obtain in the region of earth magnetism Tonghua multiple location informations with reference to Geomagnetic Station and to
Before the location information of measuring point, it is also used to:
Definitely the distance between each Geomagnetic Station and tested point information in magnetic flux region；
The Geomagnetic Station for meeting preset condition with the distance between tested point information is determined as with reference to Geomagnetic Station.
Optionally, the determining weight module determines the i-th weighted value with reference to Geomagnetic Station by following formula, described the
I is the multiple with reference to any of Geomagnetic Station with reference to Geomagnetic Station:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor it is described i-th with reference to Geomagnetic Station with it is described to be measured
The distance between point information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point,
K is coefficient.
In the above embodiment of the present invention, obtain in the region of earth magnetism Tonghua multiple location informations with reference to Geomagnetic Station and to
The location information of measuring point, for it is multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station, according to it is each refer to Geomagnetic Station
Location information and tested point location information, obtain it is each refer to the distance between Geomagnetic Station and tested point information and position
Poor information, and the distance between Geomagnetic Station and tested point information and alternate position spike information are referred to according to each, obtain each reference
The weighted value of Geomagnetic Station, and then according to multiple weighted values with reference to Geomagnetic Station and multiple observation numbers with reference to Geomagnetic Station
According to determining the observation data of tested point.In the embodiment of the present invention, since each weighted value with reference to Geomagnetic Station is according to reference
What the distance between Geomagnetic Station and tested point information and alternate position spike information obtained, therefore, the calculating of the observation data of tested point
Influence of the different location informations with reference to Geomagnetic Station to Tonghua precision is fully considered, and alternate position spike information participates in weighted value and obtains
It is determined to preferably react the different othernesses with reference to Geomagnetic Station, to significantly improve Tonghua essence of geomagnetic diurnal change data
Degree.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is flow diagram corresponding to a kind of earth magnetism Tonghua method provided in an embodiment of the present invention；
Fig. 2 is the earth magnetism Tonghua area schematic illustrated in the embodiment of the present invention；
Fig. 3 is the specific value schematic diagram of k in the embodiment of the present invention；
Fig. 4 is the overall flow schematic diagram of earth magnetism Tonghua method in the embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of earth magnetism Tonghua device provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is less based on existing Observations in geophysics data and proposes one kind by known point estimation not
Tonghua method for knowing an observation solves the problems, such as that estimation precision is lower in conventional method, since Geomagnetic Station is different
Not identical according to differentia influence to day parameter on longitude and latitude, traditionally magnetic flux method does not consider longitude and latitude difference, results in earth magnetism
Day parameter is lower according to Tonghua precision.Based on this, the invention proposes a kind of earth magnetism Tonghua methods for weighing method surely based on direction distance.
Fig. 1 is flow diagram corresponding to a kind of earth magnetism Tonghua method provided in an embodiment of the present invention.As shown in Figure 1,
This method comprises:
Step 101, multiple in acquisition earth magnetism Tonghua region to believe with reference to the location information of Geomagnetic Station and the position of tested point
Breath；
Step 102, for it is the multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station, according to each reference
The location information of the location information of Geomagnetic Station and the tested point obtains each reference Geomagnetic Station and the tested point
The distance between information and alternate position spike information；According to described each with reference to the distance between Geomagnetic Station and the tested point information
With alternate position spike information, each weighted value with reference to Geomagnetic Station is obtained；
Step 103, according to the multiple weighted value with reference to Geomagnetic Station and the multiple observation with reference to Geomagnetic Station
Data determine the observation data of the tested point.
In the embodiment of the present invention, since each weighted value with reference to Geomagnetic Station is according to reference Geomagnetic Station and tested point
The distance between information and alternate position spike information obtain, therefore, the calculating of the observation data of tested point has fully considered different ginsengs
Influence of the location information of Geomagnetic Station to Tonghua precision is examined, and alternate position spike information participates in weighted value and must be determined to preferably instead
The different othernesses with reference to Geomagnetic Station are answered, to significantly improve Tonghua precision of geomagnetic diurnal change data.
Specifically, before step 101, further includes: definitely each Geomagnetic Station and tested point in magnetic flux region
The distance between information；The Geomagnetic Station for meeting preset condition with the distance between tested point information is determined as with reference to geomagnetic observatory
It stands.Wherein, the distance between each Geomagnetic Station and tested point information can be according to each Geomagnetic Stations in the region of earth magnetism Tonghua
Location information and the location information of tested point determine.The distance between Geomagnetic Station and tested point information meet preset condition
It can refer to that the distance between Geomagnetic Station and tested point information are less than or equal to distance threshold, distance threshold can be by art technology
Personnel are rule of thumb arranged, for example, can be 500km.
It should be noted that being also possible in the embodiment of the present invention: obtaining each Geomagnetic Station in the region of earth magnetism Tonghua
The location information of location information and tested point is determined according to the location information of the location information of each Geomagnetic Station and tested point
The distance between the location information and tested point of each Geomagnetic Station information and alternate position spike information, and by between tested point away from
Be determined as from the Geomagnetic Station that information meets preset condition with reference to Geomagnetic Station, it is subsequent according to it is each with reference to Geomagnetic Station with it is described
The distance between tested point information and alternate position spike information obtain each weighted value with reference to Geomagnetic Station.
In the embodiment of the present invention, the location information of Geomagnetic Station can be latitude and longitude information, similarly, the position of tested point
Information may be latitude and longitude information.Tested point in the embodiment of the present invention can be it is multiple, if tested point is multiple, earth magnetism
The distance between the station and tested point information can be between Geomagnetic Station and tested points apart from the average value of summation.
Fig. 2 is the earth magnetism Tonghua area schematic illustrated in the embodiment of the present invention.As shown in Fig. 2, the earth magnetism Tonghua
It include Geomagnetic Station BDV, Geomagnetic Station NCK, Geomagnetic Station HRB, Geomagnetic Station THY, Geomagnetic Station NGK, geomagnetic observatory in region
Stand BEL, Geomagnetic Station FUR.It as shown in table 1, is the relevant information signal of Geomagnetic Station in the earth magnetism Tonghua region provided in Fig. 1
Table.
Table 1: the relevant information schematic table of Geomagnetic Station in the region of earth magnetism Tonghua
As shown in table 1, the distance between Geomagnetic Station NGK and tested point are 533.98km, Geomagnetic Station BEL and tested point
The distance between be 592.23km, be greater than distance threshold (500km), therefore, Geomagnetic Station NGK and Geomagnetic Station BEL cannot make
For with reference to Geomagnetic Station, the reference Geomagnetic Station determined according to table 1 includes Geomagnetic Station BDV, Geomagnetic Station NCK, geomagnetic observatory
Stand HRB, Geomagnetic Station THY, Geomagnetic Station FUR.
In step 102, the i-th weighted value with reference to Geomagnetic Station can be determined by following formula:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor it is described i-th with reference to Geomagnetic Station with it is described to be measured
The distance between point information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point,
K is coefficient.In the embodiment of the present invention, the specific value of k be can be found in shown in Fig. 3.
In step 103, it is contemplated that observation data can refer to geomagnetic observatory to multiple in the embodiment of the present invention there may be error
The observation data stood carry out elimination of rough difference, and are filled using Lagrange's interpolation, obtain multiple having with reference to Geomagnetic Station
Effect observation data；And according to multiple weighted values with reference to Geomagnetic Station and the multiple effective observation number with reference to Geomagnetic Station
According to determining the observation data of the tested point.Elimination of rough difference is carried out by the observation data to Geomagnetic Station, can be obtained steady
Observation data, help to obtain high-precision observation data.
As shown in the above, earth magnetism Tonghua method in the embodiment of the present invention is earth magnetism Tonghua side based on direction distance
Method.Wherein, direction distance refers to the difference of longitude and latitude and elevation between multiple measuring points, it is desirable that the geographic distance between measuring point
Less than 500km.Distance between measuring point, which is calculated, is converted to XYZ using the BLH under WGS84 coordinate system, carries out the calculating of geographic distance.
Wherein, the selection of point position selects in Tonghua region of setting, to magnetic field overall strength component F, horizontal component H, magnetic declination
D, inclination obliquity I component carries out Tonghua calculating, and as a result precision evaluation is described using mean square error.
Fig. 4 is the overall flow schematic diagram of earth magnetism Tonghua method in the embodiment of the present invention, below with reference to Fig. 4 to the present invention
Earth magnetism Tonghua method in embodiment is specifically described.As shown in figure 4, this method comprises:
Step 401, multiple location informations with reference to Geomagnetic Station are obtained；
Step 402, the location information of tested point is obtained；
Step 403, it calculates and refers to the distance between Geomagnetic Station and the tested point information and location information；
Step 404, the weighted value for referring to Geomagnetic Station is calculated；
Step 405, the observation data to multiple with reference to Geomagnetic Station carry out elimination of rough difference, and using Lagrange's interpolation into
Row filling, obtains multiple effective observation data with reference to Geomagnetic Station；It specifically, can be by multiple observations with reference to Geomagnetic Station
It is cumulative that data carry out weight；It is that the distance between tested point information is less than or equal to distance threshold (500km) with reference to Geomagnetic Station
Geomagnetic Station.
Step 406, according to the multiple weighted value with reference to Geomagnetic Station and the multiple with reference to the effective of Geomagnetic Station
Data are observed, determine the observation data of the tested point；
Step 407, the observation data of tested point are exported.
By the above process, the embodiment of the present invention realizes influence of the position difference to Tonghua precision and considers, according to algorithm
Process flow, bigger using position difference, position difference is participated in Tonghua by this bigger principle of difference geomagnetic diurnal change difference
It calculates, participates in Tonghua by the modified weight of difference of latitude and calculate, be finally completed the estimation of various tested point observation data.The algorithm
Time complexity it is lower, the space memory of consumption is related to handled data volume size, solves and individually considers that distance is logical
Change the lower problem of precision, provides the foundation source data for the building of high-precision region geomagnetic model.
In addition, present inventor utilizes the observation data of the station of World Data Centre WDC network of stations Europe Region seven
The method of the embodiment of the present invention is verified, emulation point has been carried out to the precision for Tonghua method that the embodiment of the present invention proposes
Analysis, has calculated separately Tonghua result of the different location station and the mathematical statistics parameter of measured result, finally magnetic flux area over the ground
Tonghua of all main geomagnetic elements of the station (magnetic field overall strength component F, horizontal component H, declination D, inclination obliquity I component) in domain
Precision carries out error analysis, and the simulation result of algorithm shows that power method can effectively improve geomagnetic diurnal change data surely based on direction distance
Tonghua precision, in the region of the Tonghua 500km, optimal Tonghua precision of F component and horizontal component H improve can reach 1nT with
It is interior, about 1 nT is improved compared to traditional method.
For above method process, the embodiment of the present invention also provides a kind of earth magnetism Tonghua device, the particular content of the device
It is referred to above method implementation.
Based on same idea, Fig. 5 is a kind of structural schematic diagram of earth magnetism Tonghua device provided in an embodiment of the present invention, is used for
Above method is executed, described device includes obtaining module 501, determining weight module 502 and processing module 503:
The acquisition module 501, for obtain in the region of earth magnetism Tonghua multiple location informations with reference to Geomagnetic Station and to
The location information of measuring point；
The determining weight module 502, for for it is the multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station,
According to described each with reference to the location information of Geomagnetic Station and the location information of the tested point, obtain described each with reference to earth magnetism
The distance between the station and the tested point information and alternate position spike information；According to it is described it is each with reference to Geomagnetic Station with it is described to be measured
The distance between point information and alternate position spike information, obtain each weighted value with reference to Geomagnetic Station；
The processing module 503, for according to the multiple weighted value with reference to Geomagnetic Station and the multiple reference ground
The observation data of the magnetic station determine the observation data of the tested point.
Optionally, the processing module 503 is specifically used for:
Elimination of rough difference is carried out to the multiple observation data with reference to Geomagnetic Station, and is filled out using Lagrange's interpolation
It fills, obtains the multiple effective observation data with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple effective observation data with reference to Geomagnetic Station,
Determine the observation data of the tested point.
Optionally, the acquisition module 501 is obtaining multiple location informations with reference to Geomagnetic Station in the region of earth magnetism Tonghua
Before the location information of tested point, it is also used to:
Definitely the distance between each Geomagnetic Station and tested point information in magnetic flux region；
The Geomagnetic Station for meeting preset condition with the distance between tested point information is determined as with reference to Geomagnetic Station.
Optionally, the determining weight module 502 determines the i-th weighted value with reference to Geomagnetic Station, institute by following formula
It is the multiple with reference to any of Geomagnetic Station that i-th, which is stated, with reference to Geomagnetic Station:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor it is described i-th with reference to Geomagnetic Station with it is described to be measured
The distance between point information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point,
K is coefficient.
It can be seen from the above: in the above embodiment of the present invention, obtaining multiple with reference to ground in the region of earth magnetism Tonghua
The location information of the magnetic station and the location information of tested point, for it is multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station,
According to the location information of each location information with reference to Geomagnetic Station and tested point, obtain each with reference to Geomagnetic Station and tested point
The distance between information and alternate position spike information, and according to it is each refer to the distance between Geomagnetic Station and tested point information and position
Poor information obtains each weighted value with reference to Geomagnetic Station, and then according to multiple weighted values with reference to Geomagnetic Station and multiple ginsengs
The observation data for examining Geomagnetic Station determine the observation data of tested point.In the embodiment of the present invention, Geomagnetic Station is referred to due to each
Weighted value be to be obtained according to the distance between reference Geomagnetic Station and tested point information and alternate position spike information, it is therefore, to be measured
The calculating of the observation data of point has fully considered influence of the different location informations with reference to Geomagnetic Station to Tonghua precision, and position
Poor information, which participates in weighted value, must be determined to preferably react the different othernesses with reference to Geomagnetic Station, to significantly improve earth magnetism
Tonghua precision of day parameter evidence.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method or computer program product.
Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the present invention
Form.It is deposited moreover, the present invention can be used to can be used in the computer that one or more wherein includes computer usable program code
The shape for the computer program product implemented on storage media (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (4)
1. a kind of earth magnetism Tonghua method, which is characterized in that the described method includes:
Definitely the distance between each Geomagnetic Station and tested point information in magnetic flux region；
The Geomagnetic Station for meeting preset condition with the distance between tested point information is determined as with reference to Geomagnetic Station；
It obtains multiple with reference to the location information of Geomagnetic Station and the location information of tested point in the region of earth magnetism Tonghua；
For it is the multiple with reference in Geomagnetic Station it is each refer to Geomagnetic Station, according to each position with reference to Geomagnetic Station
The location information of confidence breath and the tested point obtains described each with reference to the distance between Geomagnetic Station and the tested point letter
Breath and alternate position spike information；According to described each with reference to the distance between Geomagnetic Station and the tested point information and alternate position spike information
Both sides obtain each weighted value with reference to Geomagnetic Station, if indicating the multiple with reference to ground with reference to Geomagnetic Station with i-th
Any of magnetic station then determines the i-th weighted value with reference to Geomagnetic Station by following formula:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor described i-th with reference to Geomagnetic Station and the tested point it
Between range information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point, k is
Coefficient；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple observation data with reference to Geomagnetic Station, determine described in
The observation data of tested point.
2. the method as described in claim 1, which is characterized in that according to the multiple weighted value with reference to Geomagnetic Station and described
Multiple observation data with reference to Geomagnetic Station, determine the observation data of the tested point, comprising:
Elimination of rough difference is carried out to the multiple observation data with reference to Geomagnetic Station, and is filled using Lagrange's interpolation,
Obtain the multiple effective observation data with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple effective observation data with reference to Geomagnetic Station, determine
The observation data of the tested point.
3. a kind of earth magnetism Tonghua device, which is characterized in that described device includes:
Obtain module, for the distance between each Geomagnetic Station and tested point information in definitely magnetic flux region, will with to
The Geomagnetic Station that the distance between measuring point information meets preset condition is determined as obtaining in the region of earth magnetism Tonghua with reference to Geomagnetic Station
It is multiple with reference to the location information of Geomagnetic Station and the location information of tested point；
Weight module is determined, for referring to Geomagnetic Station with reference to each in Geomagnetic Station for the multiple, according to described every
One with reference to Geomagnetic Station location information and the tested point location information, obtain it is described it is each with reference to Geomagnetic Station with it is described
The distance between tested point information and alternate position spike information；According to it is described it is each with reference between Geomagnetic Station and the tested point away from
From information and alternate position spike information both sides, each weighted value with reference to Geomagnetic Station is obtained, if referring to Geomagnetic Station table with i-th
Show the multiple with reference to any of Geomagnetic Station, then the determining weight module is determined by following formula i-th with reference to ground
The weighted value of the magnetic station:
Wherein, piFor the weighted value of the i-th reference Geomagnetic Station, diFor described i-th with reference to Geomagnetic Station and the tested point it
Between range information, (Δ xi, Δ yi) it is described i-th with reference to the alternate position spike information between Geomagnetic Station and the tested point, k is
Coefficient；
Processing module, for according to the multiple weighted value with reference to Geomagnetic Station and the multiple observation with reference to Geomagnetic Station
Data determine the observation data of the tested point.
4. device as claimed in claim 3, which is characterized in that the processing module is specifically used for:
Elimination of rough difference is carried out to the multiple observation data with reference to Geomagnetic Station, and is filled using Lagrange's interpolation,
Obtain the multiple effective observation data with reference to Geomagnetic Station；
According to the multiple weighted value with reference to Geomagnetic Station and the multiple effective observation data with reference to Geomagnetic Station, determine
The observation data of the tested point.
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