CN107356985A - The method that earthen ruins archaeological investigation is carried out using GPR wave impedance inversion - Google Patents
The method that earthen ruins archaeological investigation is carried out using GPR wave impedance inversion Download PDFInfo
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- CN107356985A CN107356985A CN201710736517.0A CN201710736517A CN107356985A CN 107356985 A CN107356985 A CN 107356985A CN 201710736517 A CN201710736517 A CN 201710736517A CN 107356985 A CN107356985 A CN 107356985A
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- wave impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of method that earthen ruins archaeological investigation is carried out using GPR wave impedance inversion.It carries out the data acquisition of GPR common offset and drilling extracting core first, and dielectric constant values are measured and record at regular intervals to obtain well data to the core of taking-up；Then, Coherent Noise in GPR Record is pre-processed, and well data is processed to obtain a low-frequency impedance body；Wave impedance inversion is done using the GPR after processing and well data, the wave impedance result of Whole frequency band is obtained, wave impedance is converted into dielectric constant, obtains a high-resolution underground dielectric constant profile；Contrast the dielectric constant values of the core of some positions of record, it can be deduced that the distribution characteristics of the different archaeology targets in underground.The invention provides the detailed distributed intelligence of the high-resolution physical parameter of underground medium, the distribution situation of dirt archaeology target can be accurately inferred to using physical parameter information, so as to improve detectivity of the GPR to target of engaging in archaeological studies.
Description
Technical field
The present invention relates to Agrocybe praecox to investigate field, more particularly to one kind utilizes GPR wave impedance inversion to carry out native something lost
The method of location archaeological investigation.
Background technology
Ground penetrating radar exploration has the advantages of quick nondestructive and higher resolution ratio, afield wide in archaeological investigation at present
General application.However, simply carrying out conventional treatment to Coherent Noise in GPR Record at present, its result can only provide the position form such as interface
So limited information, and formation physical parameters distribution can not be provided, seriously constrain the differentiation to dirt archaeology destination properties.
Drilling extracting core is the effective earthen ruins archaeological investigation means of a tradition, and drilling extracting core construction is carried out using Luoyang Spade
Simply and to ruins destructiveness very little, the core taken out by analyzing drilling well, mesh of engaging in archaeological studies can be accurately determined in vertical direction
Target property, but be often a peephole view, laterally complete earthen ruins archaeological investigation result can not be obtained.
Therefore, either GPR or drilling extracting core method, application effect is all by serious restriction.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of to carry out soil using GPR wave impedance inversion
The method of ruins archaeological investigation.
The technical solution adopted in the present invention is as follows：It is a kind of to carry out earthen ruins archaeology tune using GPR wave impedance inversion
The method looked into, this method comprise the following steps：
(1) GPR and drilling data acquisition：
According to archaeology target design survey line, Coherent Noise in GPR Record is gathered using common offset mode, if being chosen on survey line
Dry position carries out drilling extracting core, measures and record the dielectric constant values of core at regular intervals；
(2) GPR and well data processing：
The Coherent Noise in GPR Record collected in step (1) is pre-processed, the dielectric of the core measured in step (1) is normal
Number is converted to wave impedance, and a low-frequency impedance body is obtained by interpolation processing；
(3) wave impedance inversion and data interpretation：
Pretreated Coherent Noise in GPR Record and low-frequency impedance body are merged using wave impedance inversion, obtain one entirely
The wave impedance result of frequency band, dielectric constant is converted to by wave impedance, you can obtains a high-resolution underground dielectric constant point
Cloth section, the dielectric constant values of the core of some positions of contrast step (1) record, you can analyze the different archaeology targets in underground
Distribution situation.
Further, the pretreatment in the step (2) includes dewow, amplitude compensation, horizontal filtering, deconvolution, band logical
Filtering and migration processing.
Compared with prior art, the present invention is merged GPR and well data using wave impedance inversion, as a result
The detailed distributed intelligence of high-resolution physical parameter can be provided, so as to add the differentiation to earthen ruins archaeology destination properties
Ability；The function of boring coring is extended, it is organically combined with Coherent Noise in GPR Record, solves its transverse direction
The problem of loss of learning；Whole flow process is more time saving and energy saving, and place destructiveness is smaller, improves GPR and afield engages in archaeological studies
The detectivity in investigation field.
Brief description of the drawings
Fig. 1 is the flow chart that archaeological investigation is carried out using GPR wave impedance inversion；
Fig. 2 is the schematic diagram for designing survey line and bore position；
Fig. 3 is the result schematic diagram of wavelet transform；
Fig. 4 is the result schematic diagram of well data processing；
Fig. 5 is the result schematic diagram of GPR wave impedance inversion.
Embodiment
The present invention is described further with reference to the accompanying drawings and examples.
As shown in figure 1, the present embodiment offer is a kind of to carry out earthen ruins archaeological investigation using GPR wave impedance inversion
Method, this method comprise the following steps：
1) GPR and drilling data acquisition
This example archaeology target is an ancient stream channel, designs what a 25m vertical with ancient stream channel direction grew according to Given information
Survey line, as shown in Figure 2.Spy land mine is carried out in a manner of common offset using PulseEKKO Pro systems and supporting 100MHz antennas
Up to data acquisition, antenna spacing 1m, step-length 0.1m, sampling interval 0.4ns, 64 superpositions of per pass；CMP is done on survey line
Velocity analysis, it is 0.075m/ns to obtain reference velocity；According to the Coherent Noise in GPR Record feature collected, 5m, 15m, 25m are chosen
Three positions carry out drilling extracting core using Luoyang Spade, drilling depth 2m, have all detected raw soil layer, and archaeology point is done to core
Analysis, the dielectric constant values and record of core are V.7 measured using Percometer according to 0.1m interval；
2) GPR and well data processing
Dewow and amplitude compensation, use level are done to Coherent Noise in GPR Record using the Reflexw softwares that version number is 5.0
Filtering removes direct wave, then the resolution ratio and signal to noise ratio of data are lifted with Least square deconvolution and bandpass filtering, is offset with f-k
Reflective information is accurately playbacked；Time and depth transfer is done according to reference velocity, and cuts off 2m data below, remaining data is changed
It is as shown in Figure 3 to return the result that time-domain obtains；The dielectric constant data that well logging obtains is converted into wave impedance data, to every mouthful of well
Data are done one-line interpolation and obtained with GPR per track data identical sampled point, then do two-dimensional linear to three mouthfuls of well data
Interpolation extrapolation, and do using in soil deeply and obtain low-frequency impedance body such as Fig. 4 in time-domain；
3) wave impedance inversion and data interpretation
The low-frequency impedance body obtained using the Coherent Noise in GPR Record after processing and well data, using wave impedance inversion to visiting
Ground radar and well data are merged, and obtain the wave impedance result of a Whole frequency band；Wave impedance is converted into dielectric constant, can be obtained
To a high-resolution underground dielectric constant profile result such as Fig. 5；Analyzed and measured according to core before, learn river course
Alluvial has higher dielectric constant than the raw-soil, so as to clearly recognize the lower interface of ancient stream channel such as the dotted line institute in Fig. 5
Show, and the vertically and horizontally detailed distribution situation of ancient stream channel alluvial can be recognized accurately.
To sum up apparently, compared to traditional GPR archaeological investigation method for only providing the limited informations such as interface location, sheet
Method is merged GPR and well data using wave impedance inversion, as a result can provide high-resolution physical parameter
Detailed distributed intelligence, so as to add to earthen ruins archaeology destination properties discriminating power；The function of boring coring is carried out
Extension, makes it organically combine with Coherent Noise in GPR Record, solves the problems, such as its horizontal loss of learning；Whole flow process compared with
To be time saving and energy saving, and place destructiveness is smaller, improves the detectivity in GPR afield archaeological investigation field.
Claims (2)
- A kind of 1. method that earthen ruins archaeological investigation is carried out using GPR wave impedance inversion, it is characterised in that this method bag Include following steps：(1) GPR and drilling data acquisition：According to archaeology target design survey line, Coherent Noise in GPR Record is gathered using common offset mode, some positions are chosen on survey line Carry out drilling extracting core is put, measures and record the dielectric constant values of core at regular intervals.(2) GPR and well data processing：The Coherent Noise in GPR Record collected in step (1) is pre-processed, the dielectric constant of the core measured in step (1) is turned Wave impedance is changed to, a low-frequency impedance body is obtained by interpolation processing.(3) wave impedance inversion and data interpretation：Pretreated Coherent Noise in GPR Record and low-frequency impedance body are merged using wave impedance inversion, obtain a Whole frequency band Wave impedance result, wave impedance is converted into dielectric constant, you can obtain a high-resolution underground dielectric constant distribution and cut open Face, the dielectric constant values of the core of some positions of contrast step (1) record, you can analyze point of the different archaeology targets in underground Cloth situation.
- 2. a kind of method that earthen ruins archaeological investigation is carried out using GPR wave impedance inversion according to claim 1, Characterized in that, pretreatment in the step (2) include dewow, amplitude compensation, horizontal filtering, deconvolution, bandpass filtering and Migration processing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239726A (en) * | 2020-02-26 | 2020-06-05 | 山东超越数控电子股份有限公司 | Method, device and readable storage medium for identifying underground pollutant area |
| CN113376629A (en) * | 2021-05-13 | 2021-09-10 | 电子科技大学 | In-well radar least square inversion method based on non-uniform input parameter grid |
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| WO2005093462A1 (en) * | 2004-03-24 | 2005-10-06 | Ids Ingegneria Dei Sistemi S.P.A. | Impulsive multi-channel ground penetrating radar |
| CN102323623A (en) * | 2011-08-15 | 2012-01-18 | 浙江大学 | Ground penetrating radar attribute analysis method in archaeological investigation |
| CN102435866A (en) * | 2011-11-21 | 2012-05-02 | 浙江大学 | Method for quickly identifying interference of ground object during archaeological detection of ground penetrating radar |
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2017
- 2017-08-24 CN CN201710736517.0A patent/CN107356985A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005093462A1 (en) * | 2004-03-24 | 2005-10-06 | Ids Ingegneria Dei Sistemi S.P.A. | Impulsive multi-channel ground penetrating radar |
| CN102323623A (en) * | 2011-08-15 | 2012-01-18 | 浙江大学 | Ground penetrating radar attribute analysis method in archaeological investigation |
| CN102435866A (en) * | 2011-11-21 | 2012-05-02 | 浙江大学 | Method for quickly identifying interference of ground object during archaeological detection of ground penetrating radar |
Non-Patent Citations (1)
| Title |
|---|
| ZENG ZHAO-FA 等: "Recursive impedance inversion of ground-penetrating radar data in stochastic media", 《APPLIED GEOPHYSICS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239726A (en) * | 2020-02-26 | 2020-06-05 | 山东超越数控电子股份有限公司 | Method, device and readable storage medium for identifying underground pollutant area |
| CN113376629A (en) * | 2021-05-13 | 2021-09-10 | 电子科技大学 | In-well radar least square inversion method based on non-uniform input parameter grid |
| CN113376629B (en) * | 2021-05-13 | 2022-08-05 | 电子科技大学 | In-well radar least square inversion method based on non-uniform input parameter grid |
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