Polarization phase method suitable for multiple frequencies
By using the multi-frequency polarization phase method, multiple frequency current signals are emitted and phase parameters are calculated, which solves the problem of insufficient exploration effect in existing technologies and realizes more accurate and flexible underground geological exploration.
Patent Information
- Application Number
- CN202511875162.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-02-17
AI Technical Summary
Existing phase-induced polarization methods mainly focus on obtaining the phase of a single frequency or the relative phase between two frequencies, failing to achieve phase exploration between more frequencies, resulting in insufficient exploration results.
The multi-frequency polarization phase method is adopted. By setting up power supply points and measuring electrodes in the exploration area, multiple current signals of different frequencies are emitted, and the potential difference and phase difference are recorded. The multi-frequency integrated apparent phase and sub-apparent phase parameters are calculated using determinant operation formulas. The extreme frequency characteristics of polarization phase are analyzed, and inversion processing is performed to obtain more frequency information.
It enables the extraction of more frequency information, improves exploration accuracy and flexibility, can more accurately analyze the characteristics of underground geological bodies, and provides multiple options for inversion of exploration results to meet the needs of different exploration scenarios.
Smart Images
Figure CN121541273A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of geological exploration technology, specifically a polarization phase method applicable to multiple frequencies. Background Technology
[0002] Current phase-induced polarization (PI) methods primarily utilize the measurement of the phase of single-frequency or multi-frequency signals for PI anomaly detection. For example, the initial PI phase method involved acquiring the phase of a single frequency to extract PI phenomena and thus determine the presence of PI phenomena underground. The pseudo-random multi-frequency relative phase method simultaneously supplies multiple frequencies and measures the single-frequency phase of each frequency. A relative phase algorithm is then used to calculate the relative phase between two frequencies, thereby obtaining the PI information of the underground geological body. Therefore, existing phase-induced polarization methods focus on acquiring single-frequency phases or the relative phase between two frequencies, failing to achieve phase exploration across more frequencies, thus resulting in limited exploration effectiveness. Summary of the Invention
[0003] The purpose of this application is to provide a polarization phase method applicable to multiple frequencies, so as to realize the comprehensive phase and sub-phase parameters of more frequency signals, and to extract more information between frequencies, thereby obtaining exploration results with higher accuracy.
[0004] To achieve the above objectives, this application discloses the following technical solution: a polarization phase method applicable to multiple frequencies, the method comprising the following steps: Site layout: In the exploration area, power supply points are set up according to exploration needs. and power supply point and the corresponding measuring electrodes With measuring electrodes ; Signal transmission and data acquisition: A signal transmitting device, powered by a power source, transmits multiple signals at different frequencies. The current signal is recorded, and the supply current at each frequency is also recorded. ,in, The potential difference at the corresponding frequency is measured at the measuring electrodes using a signal receiving device. and the phase difference of the potential difference relative to the supply current Among them, the number of transmission frequencies Furthermore, the frequency values show an increasing trend. Apparent resistivity parameter calculation: Based on the principle of apparent resistivity calculation in electrical resistivity exploration, and combined with the location information of the power supply point and measuring electrodes, the device coefficient is determined. Calculate the apparent resistivity parameters of each power supply point and measuring electrode combination at each frequency. ; Comprehensive Apparent Phase Parameter Calculation: Using the first determinant calculation formula, based on the acquired frequency data and phase difference data, the multi-frequency comprehensive apparent phase parameters for the corresponding measurement location are calculated. The range of values for the variables in the first determinant calculation formula is determined based on the number of frequencies and the calculation logic. The relevant variables correspond to the frequency sequence number, the row number and the column number of the determinant, respectively. Sub-view phase parameter calculation: Using the second determinant operation formula, multiple multi-frequency sub-view phase parameters are calculated by changing the values of variables in the formula. In the second determinant calculation formula, by setting the value range of the variable within a preset interval, multiple sub-view phase parameters are obtained as the variable changes within the value range; by comparing the multi-frequency integrated view phase parameters and the multi-frequency sub-view phase parameters, the polarization phase extreme frequency characteristics of the measurement position are analyzed. Multi-location measurement: Change the position of the power supply point or the measuring electrode, and repeat the steps of signal transmission and data acquisition, apparent resistivity parameter calculation, comprehensive apparent phase parameter calculation and sub-apparent phase parameter calculation to obtain the apparent resistivity parameters, multi-frequency comprehensive apparent phase parameters and multi-frequency sub-apparent phase parameters at different positions; Results Inversion: The apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters obtained from all measurement locations are inverted to obtain the electrical exploration results.
[0005] Preferably, in the transmission of multiple current signals of different frequencies, the frequencies of the multi-frequency signals used satisfy the following... .
[0006] Preferably, during data acquisition, the signal receiving device collects exploration data at multiple measurement locations.
[0007] As a preferred option, this multi-frequency polarization phase measurement electrical exploration method is applied to both two-dimensional and three-dimensional electrical exploration scenarios.
[0008] Preferably, the signal transmitting device transmits frequency signals in the following manner: transmitting a single frequency each time and completing the transmission of multiple frequencies in multiple sessions, or transmitting multiple frequency signals simultaneously.
[0009] Preferably, the signal transmitting device and the signal receiving device have a time synchronization function.
[0010] Preferably, the signal transmitting device is an electrical transmitter.
[0011] Preferably, the signal receiving device is an electrical receiver.
[0012] The polarization phase method applicable to multiple frequencies proposed in this application has the following technical advantages compared with the prior art: (1) Obtaining more frequency information: The polarization phase method of the present invention can send current signals of no less than two frequencies and measure the potential difference and phase difference of the corresponding frequencies. By calculating the multi-frequency integrated apparent phase parameter and the multi-frequency sub-apparent phase parameter, the extraction of information between more frequencies is realized. Compared with the prior art, the frequency information obtained is greatly enriched, and data support is provided for more accurate analysis of the characteristics of underground geological bodies.
[0013] (2) Improve exploration accuracy: Based on rich frequency information, by comparing the apparent phase parameters and sub-apparent phase parameters, the polarization phase extreme frequency characteristics can be analyzed more accurately. Different polarimetric bodies have different polarization phase extreme frequency characteristics, so different polarimetric bodies can be distinguished more effectively based on these characteristics, thereby improving the accuracy of electrical exploration and making the exploration results more accurate and reliable.
[0014] (3) Flexible and diverse exploration methods: This technical solution is highly flexible in the exploration process. The arrangement of power supply points and measuring points is diverse. They can be arranged on the same measuring line to achieve two-dimensional electrical resistivity tomography, or on multiple measuring lines to achieve three-dimensional electrical resistivity tomography. At the same time, during data acquisition, each power supply can be carried out at multiple measuring points, and the frequency transmission method is also flexible. It can transmit one frequency at a time, or multiple frequencies can be transmitted simultaneously, which meets the needs of different exploration scenarios.
[0015] (4) Abundant inversion results available: When inverting the acquired apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters, any parameter or parameter combination can be selected for inversion, thereby obtaining inversion results for various corresponding parameters. This method provides exploration personnel with more analytical perspectives and choices, enabling them to delve deeper into data information based on actual needs and research priorities, further improving the practicality and effectiveness of exploration. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a flowchart of a polarization phase method applicable to multiple frequencies provided in this embodiment; Figure 2 This is an exemplary field layout diagram provided in this embodiment. Detailed Implementation
[0018] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0019] In this document, the term "comprising" is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0020] This embodiment provides a method such as Figure 1 The polarization phase method shown is applicable to multiple frequencies. The method includes the following steps: Step 1: Site Layout: Set up power supply points in the exploration area according to exploration needs. and power supply point and the corresponding measuring electrodes With measuring electrodes .
[0021] Step 2, Signal Transmission and Data Acquisition: Using a signal transmitting device powered by a power source, multiple different frequencies are transmitted. The current signal, Simultaneously record the power supply current at each frequency. ,in, The potential difference at the corresponding frequency is measured at the measuring electrodes using a signal receiving device. and the phase difference of the potential difference relative to the supply current ;in, n The number of frequencies simultaneously emitted by a multi-frequency electrical transmitter. Furthermore, the frequency values exhibit an increasing trend. During data acquisition, the signal receiving device collects exploration data at multiple measurement locations. It should be noted that in this embodiment, the signal transmitting device transmits frequency signals in two ways: transmitting a single frequency each time and completing the transmission of multiple frequencies in multiple sessions, or transmitting multiple frequency signals simultaneously. The signal transmitting device is an electrical resistivity transmitter, and the signal receiving device is an electrical resistivity receiver. The signal transmitting device and the signal receiving device have a time synchronization function, thereby achieving accurate calculation of the phase difference.
[0022] Step 3: Calculation of Apparent Resistivity Parameters: Based on the principle of apparent resistivity calculation in electrical resistivity exploration, and combined with the location information of the power supply point and measuring electrodes, determine the device coefficients. Calculate the apparent resistivity parameters of each power supply point and measuring electrode combination at each frequency. , .
[0023] Step 4: Calculation of Integrated Apparent Phase Parameters: Using the first determinant calculation formula, based on the acquired frequency data and phase difference data, the multi-frequency integrated apparent phase parameters for the corresponding measurement location are calculated. The range of values for the variables in the first determinant calculation formula is determined based on the number of frequencies and the calculation logic. The relevant variables correspond to the frequency sequence number, the row number, and the column number of the determinant, respectively. The first determinant calculation formula specifically includes: (Formula 1) (Formula 2) (Formula 3) in, , They represent , The absolute value; in formulas 2 and 3 q for Natural numbers within the interval, p for Natural numbers within the interval; subscript q It is the frequency index, and q The row numbers are the determinants in Formulas 2 and 3; superscript p / 2 is the power, and p Let be the column number of the determinant in formulas 2 and 3, and p for The natural numbers within the interval. The multi-frequency integrated apparent phase parameters for the corresponding power supply point and the corresponding measurement point are obtained through calculations using formulas 1-3. .
[0024] Step 5: Sub-view phase parameter calculation: Using the second determinant operation formula, by changing the values of the variables in the formula, multiple multi-frequency sub-view phase parameters are calculated. In the second determinant calculation formula, by setting the value range of the variable within a preset interval, multiple sub-view phase parameters are obtained as the variable changes within the value range. By comparing the multi-frequency integrated view phase parameters and the multi-frequency sub-view phase parameters, the polarization phase extreme frequency characteristics of the measurement position are analyzed. Since different polaribodies have different polarization phase extreme frequency characteristics, different types of polaribodies can be distinguished based on these characteristics. The second determinant calculation formula specifically includes: (Formula 4) (Formula 5) (Formula 6) in, , They represent , The absolute value of, in formula 4-6 r for Natural numbers within the interval; v for Natural numbers within the interval; w for Natural numbers within the interval; subscript w It is the frequency index, and w The row number is the determinant in formulas 5 and 6; superscript v / 2 is the power, and v Let be the column number of the determinant in formulas 5 and 6, and v for Natural numbers within the interval. With r In the interval With different values, n-2 multi-frequency sub-view phase parameters can be obtained through formula 4-6. .
[0025] Step Six: Multi-location Measurement: Change the position of the power supply point or measuring electrode, and repeat steps one through five to obtain the apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters at different positions. It is feasible to either fix the measuring electrode at the measuring point and only change the position of power supply point A or B to obtain the apparent resistivity and apparent phase parameters at the same measuring point from different power supply points; or fix the position of power supply point A or B and change the position of the measuring electrode at the measuring point to obtain the apparent resistivity and apparent phase parameters of the same power supply point at different measuring points; or change both the power supply point and the measuring electrode at the measuring point to obtain the apparent resistivity and apparent phase parameters for the corresponding power supply point and the corresponding measuring point.
[0026] Step 7: Result Inversion: The apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters obtained from all measurement locations are inverted to obtain the electrical exploration results.
[0027] As a preferred embodiment of this invention, the power supply point and the measuring electrode can be arranged on the same measuring line to realize two-dimensional electrical exploration; or the power supply point and the measuring point can be arranged on multiple measuring lines to realize three-dimensional electrical exploration. That is, the electrical exploration method of multi-frequency polarization phase measurement in this embodiment can be applied to two-dimensional electrical exploration and three-dimensional electrical exploration scenarios.
[0028] Below, in conjunction with, for example Figure 2 The example of a field work setup shown provides a detailed description of the specific implementation of the technical solution of this application, wherein... Figure 2 middle The symbols represent the numbers of the power supply electrodes connected to the electrical resistivity transmitter. Circular symbols represent power supply electrodes, and cross symbols represent measurement electrodes. M1 and M2 are the measurement electrode numbers. 1 represents an electrical resistivity transmitter with time synchronization function, and 2 represents an electrical resistivity receiver with time synchronization function. For example... Figure 2 The diagram shows the exploration of measuring electrodes M1 and M2 corresponding to a certain measuring point O, and their arrangement as shown. Figure 2 The two power supply electrodes shown The method proposed in this embodiment can be implemented by the following steps: a) In the exploration area, arrange the following according to the requirements of electrical resistivity exploration: Figure 2 The pair of power supply points shown Measuring electrodes corresponding to the measuring points and .
[0029] b) The two power supply electrodes of the electrical transmitter are located at the power supply point. and power supply point Power supply is provided, as shown in Table 3, and five frequencies are transmitted. The current signal is recorded, and the supply current at the corresponding frequency is recorded. ;in That is, the frequency value varies with the serial number. i Increasing and increasing; the electrical receiver at the measuring electrodes and Measure the potential difference at the corresponding frequency. The phase difference between the corresponding potential difference of the corresponding frequency value and the corresponding supply current. ;5 represents the number of frequencies simultaneously emitted by the multi-frequency electrical transmitter, and As shown in Table 3, the selected frequencies meet the following conditions: the highest frequency in the multi-frequency signal is not greater than 1000 Hz and the lowest frequency is not less than 0.001 Hz. In this embodiment, to reduce display complexity, exploration data is collected only at one measurement point. The electrical resistivity transmitter and receiver have time synchronization function, thereby realizing accurate calculation of phase difference.
[0030] c) Calculate the apparent resistivity parameters for each pair of power supply points, each pair of measuring electrodes for each measuring point, and each frequency using the apparent resistivity formula from electrical exploration. ;in To be based on the power supply point A Power supply point B Measuring electrodes corresponding to the measuring points and The coefficients of the electrical exploration device are calculated based on the coordinates; since the apparent resistivity parameter is calculated using a conventional method, this embodiment does not provide specific calculation results.
[0031] d) Using the relevant data shown in Table 3, substitute them into formulas (1), (2), and (3) to calculate the multi-frequency integrated apparent phase parameters of the corresponding power supply points A and B and the corresponding measurement points. .
[0032] Table 3 (1) In formula (1): Based on the above calculations, as shown in Table 3, the multi-frequency integrated apparent phase parameters for the corresponding power supply point and the corresponding measurement point are obtained. .
[0033] e) Using the relevant data shown in Table 3, substitute them into formulas (4), (5), and (6) to calculate the multi-frequency sub-apparent phase parameters of the corresponding power supply point and the corresponding measurement point. .
[0034] (4) As mentioned earlier, in formula (4), n=5, and r takes the values of 2, 3, and 4 respectively, thus obtaining a 5-frequency signal. , , , , , Intermediate results and three sub-view phase parameters.
[0035] In formula (4) , They represent , The absolute value of the above calculation results is shown in Table 3.
[0036] Multi-frequency integrated apparent phase parameters from corresponding power supply points and corresponding measurement points and multi-frequency sub-view phase parameters By comparing and analyzing the polarization phase extreme frequency characteristics of the corresponding power supply point and the corresponding measurement point, we can try to distinguish polaritons of different properties based on the polarization phase extreme frequency characteristics.
[0037] Based on the above calculations, we obtain , , , It can be observed that the above data shows a decreasing trend, which indicates that the polarization phase of the induced polarization anomaly at this measurement point shows a decreasing trend towards higher frequencies. That is, the extreme frequency of the polarization phase of the induced polarization anomaly at this measurement point is located at a high frequency, i.e., greater than or equal to 8 Hz.
[0038] f) If necessary, change the position of the measuring electrode corresponding to the power supply point or measuring point, and obtain the apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters of other power supply points or other measuring points according to the formulas in steps b) to e). That is, the measuring electrode of the measuring point can be fixed, and only the position of power supply point A or B can be changed to obtain the apparent resistivity and apparent phase parameters of different power supply points at the same measuring point; the position of power supply point A or B can be fixed, and the position of the measuring electrode of the measuring point can be changed to obtain the apparent resistivity and apparent phase parameters of the same power supply point at different measuring points; or both the power supply point and the measuring electrode of the measuring point can be changed to obtain the apparent resistivity and apparent phase parameters of the corresponding power supply point and the corresponding measuring point.
[0039] g) Invert the apparent resistivity parameters, multi-frequency composite apparent phase parameters, and multi-frequency sub-apparent phase parameters obtained at all measuring points to obtain the electrical exploration results. The inversion of these three parameters—apparent resistivity, composite apparent phase, and sub-apparent phase—can be performed by selecting any parameter or combination of parameters to obtain the corresponding inversion results.
[0040] Based on the above, the polarization phase method applicable to multiple frequencies in this embodiment has the following technical features: (1) Obtaining more frequency information: The polarization phase method of the present invention can send current signals of no less than two frequencies and measure the potential difference and phase difference of the corresponding frequencies. By calculating the multi-frequency integrated apparent phase parameter and the multi-frequency sub-apparent phase parameter, the extraction of information between more frequencies is realized. Compared with the prior art, the frequency information obtained is greatly enriched, and data support is provided for more accurate analysis of the characteristics of underground geological bodies.
[0041] (2) Improve exploration accuracy: Based on rich frequency information, by comparing the apparent phase parameters and sub-apparent phase parameters, the polarization phase extreme frequency characteristics can be analyzed more accurately. Different polarimetric bodies have different polarization phase extreme frequency characteristics, so different polarimetric bodies can be distinguished more effectively based on these characteristics, thereby improving the accuracy of electrical exploration and making the exploration results more accurate and reliable.
[0042] (3) Flexible and diverse exploration methods: This technical solution is highly flexible in the exploration process. The arrangement of power supply points and measuring points is diverse. They can be arranged on the same measuring line to achieve two-dimensional electrical resistivity tomography, or on multiple measuring lines to achieve three-dimensional electrical resistivity tomography. At the same time, during data acquisition, each power supply can be carried out at multiple measuring points, and the frequency transmission method is also flexible. It can transmit one frequency at a time, or multiple frequencies can be transmitted simultaneously, which meets the needs of different exploration scenarios.
[0043] (4) Abundant inversion results available: When inverting the acquired apparent resistivity parameters, multi-frequency integrated apparent phase parameters, and multi-frequency sub-apparent phase parameters, any parameter or parameter combination can be selected for inversion, thereby obtaining inversion results for various corresponding parameters. This method provides exploration personnel with more analytical perspectives and choices, enabling them to delve deeper into data information based on actual needs and research priorities, further improving the practicality and effectiveness of exploration.
[0044] (5) The calculation process is scientific and reasonable: specific formulas are used to calculate the apparent resistivity parameters, multi-frequency comprehensive apparent phase parameters, and multi-frequency sub-apparent phase parameters. These formulas take into account a variety of factors such as power supply current, potential difference, and frequency. Through the calculation method of determinant, the electrical properties of underground geological bodies can be reflected more comprehensively and accurately, providing a scientific and reasonable calculation basis for subsequent analysis and exploration results.
[0045] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A polarization phase method suitable for multiple frequencies, characterized by, The method comprises the following steps: Site arrangement: in the exploration area, set up power supply points according to the exploration needs and power supply points and corresponding measuring electrodes and measuring electrodes ; Signal transceiving and data collection: using signal transmitting device to supply power at power supply point, transmitting multiple current signals of different frequencies, recording power supply current of each frequency wherein, ; measuring potential difference of corresponding frequency at measuring electrode by signal receiving device and phase difference of potential difference relative to power supply current ; wherein, the number of transmitted frequencies , and the frequency values change in an increasing regular pattern; View resistivity parameter calculation: according to the view resistivity calculation principle of electrical exploration, the device coefficient is determined combined with the position information of power supply point and measuring electrode , the view resistivity parameter of each power supply point and measuring electrode combination at each frequency is calculated ; Comprehensive apparent phase parameter calculation: a first determinant operation formula is used to calculate the multi-frequency comprehensive apparent phase parameter of the corresponding measurement position based on the collected frequency data and phase difference data ; the variable value range in the first determinant operation formula is determined according to the number of frequencies and operation logic, and the relevant variables correspond to the frequency serial number, the row number and the column number of the determinant respectively; Sub-view phase parameter calculation: a plurality of multi-frequency sub-view phase parameters are calculated by changing the variable values in the second determinant operation formula In the second determinant operation formula, by setting the variable value range in a preset interval, a plurality of sub-view phase parameters are obtained as the variable changes in the value range; by comparing the multi-frequency comprehensive view phase parameter and the multi-frequency sub-view phase parameter, the polarization phase extreme frequency characteristics of the measurement position are analyzed. Multi-position measurement: changing the power supply point or the position of the measurement electrode, repeating the signal transmission and reception and data acquisition, the apparent resistivity parameter calculation, the integrated apparent phase parameter calculation and the sub apparent phase parameter calculation steps, and obtaining the apparent resistivity parameters, multi-frequency integrated apparent phase parameters and multi-frequency sub apparent phase parameters at different positions; Result inversion: performing inversion processing on the apparent resistivity parameters, multi-frequency integrated apparent phase parameters and multi-frequency sub apparent phase parameters obtained at all measurement positions to obtain the electrical prospecting results.
2. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, In the described transmitting a plurality of different frequency current signals, the frequency of the multi-frequency signal employed satisfies .
3. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, When data acquisition is performed, the signal receiving device performs prospecting data acquisition at multiple measurement positions.
4. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, The multi-frequency polarization phase measurement electrical prospecting method is applied to two-dimensional electrical prospecting and three-dimensional electrical prospecting scenes.
5. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, The signal transmitting device transmits frequency signals in the following manner: transmitting a single frequency each time and completing the transmission of multiple frequencies in multiple times, or simultaneously transmitting multiple frequency signals.
6. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, The signal transmitting device and the signal receiving device have a time synchronization function.
7. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1, characterized in that, The signal transmitting device is an electrical transmitter.
8. The multi-frequency polar-dip phase measurement electrical prospecting method according to claim 1 or 7, characterized in that, The signal receiving device is an electrical receiver.