WO2023125041A1 - Procédé de positionnement de zone, appareil de mesure de distance et dispositif électronique - Google Patents

Procédé de positionnement de zone, appareil de mesure de distance et dispositif électronique Download PDF

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Publication number
WO2023125041A1
WO2023125041A1 PCT/CN2022/139286 CN2022139286W WO2023125041A1 WO 2023125041 A1 WO2023125041 A1 WO 2023125041A1 CN 2022139286 W CN2022139286 W CN 2022139286W WO 2023125041 A1 WO2023125041 A1 WO 2023125041A1
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Prior art keywords
positioning
signal
frequency
spectrum
ranging
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PCT/CN2022/139286
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English (en)
Chinese (zh)
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何志军
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景玄科技（上海）有限公司
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Publication of WO2023125041A1 publication Critical patent/WO2023125041A1/fr

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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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the invention belongs to the technical field of radio communication, and specifically relates to an area positioning method, a distance measuring device and electronic equipment.
  • distance measurement is the basis for determining the position information of the device under test and positioning and navigation.
  • the radio positioning system can measure the distance from multiple reference stations to the device under test through time-synchronized or non-time-synchronized distance measurement technology, and then obtain the position information of the device under test through geometric calculation.
  • the accuracy of position information is limited by the distance measurement accuracy and the geometric distribution of reference stations. Therefore, the versatility and accuracy of distance measurement technology is crucial to radio positioning and navigation.
  • the inventor found that the above-mentioned technology has at least the following defects: limited by chips, electronic components and cost, the distance measurement accuracy of the existing technology is relatively low at long distances, and at a certain Under hardware conditions, the ranging accuracy and ranging range cannot be balanced. For large-range ranging, the accuracy must be lower. If the ranging accuracy is improved from the hardware, it is necessary to use chips and electronic components with higher accuracy. This is easy. cause an increase in cost.
  • the purpose of this application is to propose a regional positioning method, which solves the problems of low ranging accuracy and inability to take into account both measurement accuracy and measurement range in the prior art, and realizes millimeter-level measurement in a large range precision.
  • the area positioning method disclosed in this application includes the following steps:
  • the measured target calculates and generates a feedback signal according to the ranging signal
  • the ranging signal also includes a first positioning spectrum and a second positioning spectrum, and the first positioning spectrum is provided with a first difference frequency;
  • the first distance value is determined as the second distance value through the second ranging.
  • the first positioning spectrum includes at least two signals of different frequencies
  • the second positioning spectrum includes at least one signal
  • the frequency of the signal in the second positioning spectrum is higher than the frequency of any signal in the first positioning spectrum
  • the second positioning frequency spectrum is provided with a second difference frequency, and the second difference frequency is used to measure the distance of the measured target for the first time in the first measurement range, and the first distance value is obtained through the first distance measurement, and the second difference frequency is used
  • the positioning frequency spectrum measures the distance of the measured target for the second time, and determines the first distance value as the second distance value through the second distance measurement.
  • the second difference frequency is greater than the first difference frequency
  • the method also includes: using the first difference frequency to measure the measured target within the first measurement range.
  • the present application also provides a distance measuring device, including: a generating module for outputting positioning signals and carrier frequency signals; a modulating module connected to the generating module for modulating and synthesizing the positioning signals and carrier frequency signals It is a ranging signal; the transceiver module is connected with the modulation module, and is used for sending the ranging signal to the measured target, and receiving the feedback signal sent by the measured target; the calculation module, at least partly connected with the generating module, can receive the Generate the positioning signal output by the module; at least part of the calculation module is also connected to the transceiver module for demodulating the feedback signal and comparing it with the positioning signal to obtain the phase difference between the feedback signal and the positioning signal; wherein, the positioning signal is set At least two sets of positioning spectrums and their initial phase information, the calculation module compares the initial phase information with the phase information in the feedback signal, and the frequency of at least one set of positioning spectrums is less than or equal to the first frequency.
  • the positioning signal includes the first positioning spectrum, the second positioning spectrum, and the first difference frequency generated by the first positioning spectrum; the first difference frequency is used to determine the first measurement range, so that the first positioning spectrum is within the first measurement range Measurement.
  • the frequency of the first positioning spectrum is less than or equal to the first frequency
  • the frequency of the second positioning spectrum is greater than or equal to the second frequency
  • the first frequency is less than the second frequency
  • a circulator is also included, the circulator is at least partly connected to the modulation module, the circulator is at least partly connected to the transceiver module, and the ranging signal is transmitted to the transceiver module through the circulator.
  • the circulator is at least partially connected to the computing module, and the feedback signal received by the transceiver module is transmitted to the computing module through the circulator.
  • the present application also provides an electronic device, including: a memory for storing computer programs.
  • a processor When the processor is used to execute the program stored in the memory, it can realize the steps of any one of the above-mentioned area positioning methods.
  • the benefits of this application are: the regional positioning method proposed by this application has low cost, wide application range, can be widely adapted to different hardware conditions in radio positioning systems, and can achieve millimeter-level measurement while taking into account a large range precision.
  • Fig. 1 is the realization flow diagram of area localization method
  • 2 is a schematic structural diagram of an electronic device
  • Fig. 3 is a structural schematic diagram of a distance measuring device
  • Fig. 4 is the working schematic diagram of frequency generator
  • Fig. 5 is the spectrum structure of ranging signal
  • Figure 6 is a schematic structural diagram of the computing module
  • Fig. 7 is a working schematic diagram of the ranging device
  • Fig. 8 is a schematic diagram of implementing the spatial positioning of the device under test.
  • the embodiment of the present application solves the problems of the prior art, such as low ranging accuracy and inability to take into account both measurement accuracy and measurement range, by providing an area positioning method, a distance measuring device, and electronic equipment, and realizes millimeter-level distance measurement under a large range. measurement accuracy.
  • the difference frequency generated by the low frequency positioning spectrum is used to determine The maximum range, using the low-frequency positioning spectrum to measure the distance of the measured target, and get the first measurement result. Further use the high-frequency positioning spectrum to measure the distance of the measured target and obtain the second measurement result. By combining the first measurement result and the second measurement result, millimeter-level measurement accuracy can be obtained within the maximum range.
  • high frequency refers to radio waves with a frequency band greater than or equal to 3MHz
  • low frequency refers to the lowest frequency range applied in a certain technical field.
  • frequencies within the range of greater than or equal to 30KHZ and less than or equal to 300KHZ are low frequencies.
  • the embodiment of the present application provides an area positioning method, and the specific steps are as follows:
  • the measured target calculates and generates a feedback signal according to the ranging signal
  • the ranging signal also includes a first positioning spectrum and a second positioning spectrum, and the first positioning spectrum is provided with a first difference frequency;
  • the first distance value is determined as the second distance value through the second ranging.
  • the first positioning spectrum includes at least two signals of different frequencies
  • the second positioning spectrum includes at least one signal
  • the frequency of the signal in the second positioning spectrum is higher than the frequency of any signal in the first positioning spectrum. Due to the limited measurement accuracy of the first positioning frequency spectrum, the first distance value obtained by the first distance measurement is in a dynamic range (the dynamic range may be ⁇ 1 meter), and the first distance value is further improved by the second distance measurement. It is determined as the second distance value, and the second distance value is also within a dynamic range (the dynamic range may be ⁇ 1mm). It can be understood that the dynamic range accuracy of the second distance value is greater than that of the first distance value.
  • the dynamic range of that is, the second distance value is more accurate than the first distance value, and without affecting the measurement range, the method improved by this embodiment can achieve millimeter-level measurement accuracy.
  • the second positioning frequency spectrum is provided with a second difference frequency
  • the second difference frequency is used to measure the distance of the measured target for the first time within the first measurement range, and the first distance value is obtained through the first distance measurement , use the second positioning frequency spectrum to measure the target for the second time, and determine the first distance value as the second distance value through the second distance measurement.
  • the signal frequencies set in the first positioning spectrum are all at low frequencies, and the signal frequencies set in the second positioning spectrum are all at high frequencies. It is easy to understand that the second difference frequency set in the second positioning spectrum is greater than the first Locate the first beat frequency set in the spectrum.
  • the present application also provides an electronic device 100, the electronic device 100 includes a memory 11 and a processor 12, the memory 11 is used to store computer programs, and when the processor 12 is used to execute the programs stored in the memory, it can Steps for realizing the above-mentioned region positioning method.
  • the memory 11 may be a RAM (Random Access Memory, random access memory), or a non-volatile memory (non-volatile memory), such as at least one disk memory.
  • Processor 12 can be general-purpose processor, comprises: CPU (Central Processing Unit, central processing unit), NP (Network Processor, network processor) etc.; Can also be DSP (Digital Signal Processing, digital signal processor), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), FPGA (Field-Programmable Gate Array, field programmable gate array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • CPU Central Processing Unit, central processing unit
  • NP Network Processor, network processor
  • DSP Digital Signal Processing, digital signal processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array, field programmable gate array
  • other programmable logic devices discrete gate or transistor logic devices, discrete hardware components.
  • the objects of distance measurement or positioning in the original technology are mostly communication devices such as walkie-talkies or phone-based telephones. With the development of the times, these communication devices have changed into smart phones or mobile terminals. For regional positioning methods or distance measurement devices In general, the use and application scenarios have undergone great changes, and the existing technologies cannot meet the use requirements of the scenarios.
  • the embodiment of this application also provides a distance measuring device 200, including: a signal generation module 21, a modulation module 22, a transceiver module 23, a calculation module 24 and a circulator 25, the signal generation module Module 21 is used to output positioning signal and carrier frequency signal.
  • the modulation module 22 is connected with the signal generating module 21, and the modulation module 22 is used for modulating the positioning signal and the carrier frequency signal and synthesizing them into a ranging signal.
  • the transceiver module 23 is connected with the modulating module 22, and the transceiver module 23 is used for sending the ranging signal to the measured target and receiving the feedback signal sent by the measured target.
  • At least part of the calculation module 24 is connected with the signal generation module 21, capable of receiving the positioning signal output by the signal generation module 21, and at least part of the calculation module 24 is also connected with the transceiver module 23 for demodulating the feedback signal and comparing it with the positioning signal. The signals are compared to obtain the phase difference between the feedback signal and the positioning signal.
  • the circulator 25 is at least partly connected to the modulation module 22 , and the circulator 25 is at least partly connected to the transceiver module 23 , and the ranging signal is transmitted to the transceiver module 23 through the circulator 25 .
  • the circulator 25 is at least partially connected to the calculation module 24 , and the feedback signal received by the transceiver module 23 can be transmitted to the calculation module 24 through the circulator 25 .
  • the calculation module 24 compares the initial phase information with the phase information in the feedback signal, and at least one set of positioning spectrums has a frequency less than or equal to the first frequency.
  • the first frequency is the dividing line of the low frequency signal, generally, the first frequency may be 300KHZ.
  • the signal generating module 21 includes a carrier frequency signal generator 211 and a positioning signal generator 212, and the carrier frequency signal generator 211 is used to output a carrier frequency signal with a frequency of ⁇ 01 , the carrier frequency
  • the frequency signal generator 211 is connected to the modulation module 22, and the carrier frequency signal output by the carrier frequency signal generator 211 is input to the modulation module 22 for modulation.
  • the positioning signal generator 212 is used to output the positioning signal.
  • One end of the positioning signal generator 212 is connected to the modulation module 22, and the other end of the positioning signal generator 212 is connected to the calculation module 24.
  • the positioning signal can be transmitted to the modulation module 22 and the carrier frequency signal. Modulated and synthesized into a ranging signal.
  • the positioning signal can also be transmitted to the computing module 24 and stored in the computing module 24 .
  • the signal generation module 21 is a frequency generator 213, and one end of the frequency generator 213 is connected with the modulation module 22, and the frequency generator 213 can output a carrier frequency signal whose frequency is ⁇ , and six positioning signals with frequencies ⁇ 11 , ⁇ 12 , ⁇ 12 - ⁇ 11 , ⁇ 21 , ⁇ 22 and ⁇ 22 - ⁇ 21 , and the frequency generator 213 transmits the carrier frequency signal and the positioning signal to the modulation module 22.
  • the modulation module 22 can modulate the positioning signal ⁇ 11 , ⁇ 12 , ⁇ 21 , ⁇ 22 and the carrier frequency signal ⁇ 01 respectively, and synthesize the modulated signals into a ranging signal for output.
  • the other end of the frequency generator 213 is connected to the computing module 24 , and the frequency generator 213 is capable of four positioning The signal is transmitted to the computing module 24 .
  • Modulation module 22 includes several modulators, for the amplitude modulation system, the modulator can be a multiplier, for the frequency modulation system, the modulator can be a frequency modulator, for the coding system, the modulator can be an encoder, in the embodiment of the application
  • the modulator adopts the amplitude modulation system, and the mathematical expression of the ranging signal output after modulation by the modulator is cos( ⁇ 01 ⁇ )t, where ⁇ is the positioning signal. Specifically, referring to FIG.
  • the modulation module 22 includes a first modulator 221, a second modulator 222, a third modulator 223, a fourth modulator 224, and a power combiner 225, and one end of the first modulator 221 is connected to a frequency generating The other end of the first modulator 221 is connected to the power combiner 225, one end of the second modulator 222 is connected to the frequency generator 213, the other end of the second modulator 222 is connected to the power combiner 225, and the third modulator 222 is connected to the power combiner 225.
  • One end of the modulator 223 is connected to the frequency generator 213, the other end of the third modulator 223 is connected to the power combiner 225, one end of the fourth modulator 224 is connected to the frequency generator 213, and the other end of the fourth modulator 224 is connected to the frequency generator 213.
  • a power combiner 225 is connected.
  • the carrier frequency signal ⁇ 01 that frequency generator 213 outputs is added on the first modulator 221, the second modulator 222, the 3rd modulator 223 and the 4th modulator 224 simultaneously, and positioning signal ⁇ 11 is added to the first modulator 221
  • the carrier frequency signal ⁇ 01 is modulated, and the signal modulated by the first modulator 221 is transmitted to the power combiner 225, and the positioning signal ⁇ 12 is added to the second modulator 222 to modulate the carrier frequency signal ⁇ 01 , and after the second modulation
  • the signal modulated by the device 222 is transmitted to the power combiner 225, and the positioning signal ⁇ 21 is added to the third modulator 223 to modulate the carrier frequency signal ⁇ 01 , and the signal modulated by the third modulator 223 is transmitted to the power combiner 225,
  • the positioning signal ⁇ 22 is added to the fourth modulator 224 to modulate the carrier frequency signal ⁇ 01
  • the signal modulated by the fourth modulator 224 is transmitted to the power combiner 225, and
  • the transceiver module 23 can be an antenna, which is a component used to transmit or receive electromagnetic waves, and has the ability to transmit and receive radio waves.
  • the size of the antenna or the interference resistance of obstacles Capabilities are different, and the carrier frequency signal in the ranging signal can be different according to actual needs.
  • the circulator 25 is arranged in order to connect the modulation module 22, the transceiver module 23 and the calculation module 24, so that the signal transmission and reception of the distance measuring device 200 can share one antenna, and the structural design of the distance measuring device 200 can be simplified.
  • the calculation module 24 includes a low noise amplifier 241, a local oscillator 242, a mixer 243, an intermediate frequency amplifier 244, a demodulator 245, a bandpass filter unit 246, a digital processor 247 and a phase detector 248 .
  • Low noise amplifier 241 is used as the preamplifier of calculation module 24, is used for signal preamplification, and one end of low noise amplifier 241 is connected with circulator 25, and the other end of low noise amplifier 241 is connected with mixer 243, and transceiver module 23 receives The received signal enters the low noise amplifier 241 through the circulator 25 , and is preamplified by the low noise amplifier 241 and then output to the mixer 243 .
  • the mixer 243 is connected with the intermediate frequency amplifier 244, and the signal output by the mixer 243 is the difference frequency component of the first oscillating signal, and the signal output by the mixer 243 is output to the demodulator 245 after being amplified by the intermediate frequency amplifier 244, and the demodulator The 245 is used to restore the baseband signal and transmit it to the bandpass filter unit 246.
  • the demodulator 245 can be a detector for an amplitude modulated signal, or one of a frequency discriminator or a decoder.
  • the band-pass filter unit 246 includes a first filter group and a second filter group, the first filter group can filter out signals with ⁇ 11 and ⁇ 12 respectively, and the difference frequency ⁇ 12- ⁇ 11 , and the signals with ⁇ 11 and with ⁇ 12 - ⁇ 11 are input to the digital processor 247, and the phase measurement of the signals with ⁇ 11 and with ⁇ 12 - ⁇ 11 is performed by the digital processor 247.
  • the second filter group can filter out the signal with ⁇ 21 and the signal with ⁇ 22 respectively, calculate its difference frequency ⁇ 22 - ⁇ 21 through ⁇ 21 and ⁇ 22 , and combine the signal with ⁇ 21 and the signal with ⁇ 21
  • the signal of ⁇ 22 - ⁇ 21 is input to the digital processor 247, and the phase measurement of the signal with ⁇ 21 and the signal with ⁇ 22 - ⁇ 21 is performed by the digital processor 247.
  • the digital processor 247 is connected to the phase detector 248 , and the digital processor 247 can transmit the above phase measurement results to the phase detector 248 .
  • the phase detector 248 is also connected to the signal generating module 21, and the positioning signal ⁇ 11 , the positioning signal ⁇ 21 , the positioning signal ⁇ 12 - ⁇ 11 and the positioning signal ⁇ 22 - ⁇ 21 output by the signal generating module 21 are transmitted to the phase detector 248,
  • the phase detector 248 compares the phase result output by the digital processor 247 with the initial phase of the positioning signal output by the signal generating module 21, and calculates the phase difference between the two by the phase detector 248, and obtains the distance measurement by phase difference conversion. result.
  • the phase detection method of the phase detector 248 may be one of the time measurement method, the digital correlation coefficient phase detection method or the frequency domain Fourier phase detection method.
  • the ranging device 200 can be a communication base station, and the device under test 300 is a mobile terminal used by a user.
  • the communication and distance measurement of the communication base station to multiple users can be realized.
  • the device under test 300 can also be a communication base station. Through this application Realize the distance measurement between the communication base station and the communication base station.
  • the distance measuring device 200 may be a mobile terminal used by a user, and the device under test 300 may also be a mobile terminal used by a user, and the distance measurement between users is realized through this application.
  • the device under test 300 includes a signal generation module 31, a transceiver module 33, a modulation module 32, a calculation module 34 and a circulator 35, the structure and function of the transceiver module 33 and the transceiver module 23 are basically the same, the structure and function of the modulation module 32 and the modulation module 22 The functions are basically the same, the structure and function of the calculation module 34 and the calculation module 24 are basically the same, and the structure and function of the circulator 35 and the circulator 25 are basically the same, and will not be repeated here.
  • the signal generating module 31 in the device under test 300 is a carrier frequency signal generator 311, which is used to output a carrier frequency signal with a frequency of ⁇ 02 .
  • the ranging signal enters the calculating module 34 through the circulator 35, and the calculating module 34 calculates the ranging signal, and the mathematical expression of the calculated signal is: cos( ⁇ t+ ⁇ t).
  • the calculation module 34 is connected to the modulation module 32, and the signal generation module 31 is also connected to the modulation module 32, and the calculated signal (cos( ⁇ t+ ⁇ t)) is added to the modulation module 32 together with the carrier frequency signal.
  • Modulation module 32 outputs feedback signal to circulator 35 after modulation, and the mathematical expression of feedback signal is: cos( ⁇ 0 ⁇ ⁇ ) (t+ ⁇ t), and feedback signal is transmitted to transceiver module 33 through circulator 35, and transceiver module 33 sends to The ranging device 200 sends a feedback signal.
  • the mathematical expression of the feedback signal received by the transceiver module 23 is: cos( ⁇ 0 2 ⁇ )(t+2 ⁇ t), the feedback signal is transmitted to the computing module 24 through the circulator 25, and the computing module 24 solves the feedback signal, solving
  • F ⁇ is the frequency of the distance measurement signal.
  • the distance measurement accuracy is related to the wavelength of the distance measurement signal and the phase measurement accuracy.
  • its phase measuring accuracy can only reach a certain constant value, therefore, the higher the frequency F ⁇ of the ranging signal, the smaller its wavelength, the smaller the ranging range and the higher the ranging accuracy, and vice versa , the lower the F ⁇ of the ranging signal, the larger its wavelength and the lower the ranging accuracy.
  • the ranging accuracy can reach 1 meter.
  • the phase measurement accuracy of the ranging device 200 is selected to be 0.5 degrees
  • the positioning signal ⁇ 11 and the positioning signal ⁇ 12 are set as the first positioning frequency spectrum in the ranging signal
  • the positioning signal ⁇ 21 is set as the first positioning spectrum in the ranging signal.
  • the frequency of the first positioning spectrum is less than or equal to the first frequency.
  • the first frequency is 300KHz.
  • the first measurement range is centered on the distance measuring device 200 and has a radius of
  • the first distance is determined within a dynamic range (the error of the dynamic range is within ⁇ 4mm), and by combining the measurement results of the rough measurement, the first fine measurement and the micro measurement, the distance measuring device 200 can be used in the entire radius Within the first measurement range of 75 kilometers, its absolute measurement accuracy can reach 4 mm, and its relative measurement accuracy can reach 5.3x10 -8 .
  • the combination of the measurement results of the second fine measurement and the micro measurement enables the distance measuring device 200 to achieve an absolute measurement accuracy of 2 mm within the first measurement range with a radius of 75 kilometers. In the case of limited phase measurement accuracy, this implementation method can reduce the demand for phase measurement measurement accuracy.
  • the second difference frequency of the second positioning spectrum the measurement is not limited to the setting of the first positioning spectrum. Larger redundancy can be set aside to improve measurement accuracy.
  • the embodiments of the present application combine the measurement results of the first positioning spectrum and the second positioning spectrum with the measurement range, so that the ranging device 200 can achieve absolute measurement accuracy in the measurement range with a radius of 75 kilometers It can reach 2 mm, and the relative measurement accuracy can reach 2.7x10 -8 .
  • the measurement accuracy of the rough measurement is lower than that of the fine measurement
  • the measurement accuracy of the fine measurement is lower than that of the micro measurement
  • the range of the micro measurement must be greater than or equal to the error of the fine measurement
  • the measuring range of the fine measurement must be greater than or equal to the error of the rough measurement, and this setting can effectively avoid uncertainty in the measurement process of the distance measuring device 200 .
  • the embodiment of the present application also provides an implementation method capable of measuring the spatial positioning of the device under test 300.
  • Each distance measuring device 200 measures the distance between itself and the device under test 300, and by combining the measurement results of each distance measuring device 200, the spatial position of the device under test 300 can be obtained according to the combined measurement results , so that the location and height of the device under test 300 can be further determined.
  • the distance measuring device 200 can locate the one-dimensional spatial position of the device under test 300 by selecting at least one measuring device 200 with known coordinates to measure the device under test 300 according to different measurement scenarios (such as a tunnel and other measurement scenarios).
  • the two-dimensional spatial position of the device under test 300 can be located and the two-dimensional coordinates of the device under test 300 can be obtained.

Abstract

L'invention concerne un procédé de positionnement de zone, qui comprend : un signal de télémétrie étant envoyé à une cible mesurée ; la cible mesurée calculant et générant un signal de rétroaction selon le signal de télémétrie ; le signal de télémétrie et le signal de rétroaction étant comparés pour obtenir une différence de phase entre le signal de télémétrie et le signal de rétroaction ; et le calcul de la distance entre un appareil de mesure de distance et la cible mesurée selon la différence de phase en combinaison avec la vitesse de la lumière. L'invention concerne également un dispositif électronique (100) et un appareil de mesure de distance (200) capables de mettre en œuvre ledit procédé, ce qui permet à un équipement tel qu'une station de base de communication d'être apte à communiquer avec de multiples utilisateurs tout en réalisant une mesure de distance, ou permet une communication entre utilisateurs tout en réalisant une mesure de distance.
PCT/CN2022/139286 2021-12-31 2022-12-15 Procédé de positionnement de zone, appareil de mesure de distance et dispositif électronique WO2023125041A1 (fr)

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CN109975752A (zh) * 2019-03-25 2019-07-05 深圳市联智物联网科技有限公司 一种相位式测距方法
WO2021033379A1 (fr) * 2019-08-19 2021-02-25 ソニーセミコンダクタソリューションズ株式会社 Dispositif de mesure de distance et procédé de mesure de distance
US20210088646A1 (en) * 2019-09-19 2021-03-25 Kabushiki Kaisha Toshiba Distance measuring device and distance measuring method

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