A remote time-frequency device metering device and method

Abstract

The application discloses a kind of remote time-frequency equipment metering device and method, it is related to time-frequency equipment metering technical field.The device is by mobile shelter, temperature control box, time-keeping device, satellite common view receiver, frequency standard comparator, spectrum analyzer, oscilloscope, time interval counter, phase noise tester, metering detection management equipment composition.In use, by satellite common view receiver to standard time trace source, provide time-frequency reference to each instrument equipment, each instrument equipment is under the dispatch of metering detection management equipment, realize the general parameter metering of time-frequency equipment.The application can carry out time-frequency equipment metering calibration service in remote place quickly, meet the demand of mass time-frequency equipment metering and time-frequency equipment fast metering under special environment.

Description

Technical Field

[0001] This invention relates to the field of time and frequency equipment metrology technology, and in particular to a remote time and frequency equipment metrology device and method, which can be used to carry out metrological calibration of time and frequency equipment in a remote location. Background Technology

[0002] With the increasing level of global informatization, the demand for accurate time synchronization is growing. The time synchronization capability of time and frequency equipment is generally assessed through metrological calibration. Typically, the time and frequency equipment to be calibrated needs to be sent to a metrology institution for calibration.

[0003] For a small number of time and frequency devices, this method is low-cost and widely applicable. However, when faced with the need for metering large quantities of time and frequency devices or for rapid metering of time and frequency devices in special environments, existing technologies cannot meet the requirements. Therefore, it is necessary to provide a technical solution for remote metering of time and frequency devices. Summary of the Invention

[0004] In view of this, the present invention provides a remote time and frequency equipment metrology device and method, which can quickly carry out time and frequency equipment metrology and calibration services in a remote location, meeting the needs of large-scale time and frequency equipment metrology and rapid time and frequency equipment metrology under special environments.

[0005] The objective of this invention is achieved as follows:

[0006] A remote time and frequency equipment metering device includes a mobile cabin, a temperature control box, a timekeeping device, a satellite common-view receiver, a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, a phase noise tester, and metering and testing management equipment;

[0007] The mobile cabin serves as the installation platform for all instruments and equipment, providing a working environment for each instrument and equipment, and enabling the measuring device to be moved as a whole.

[0008] The temperature control box provides a constant temperature working environment for the time and frequency equipment under test, reducing the impact of temperature changes on the measurement of time and frequency indicators.

[0009] The timekeeping device is the time and frequency reference source for the entire metering device, providing multiple high-precision and high-reliability time and frequency references for the entire metering device;

[0010] The satellite common-view receiver receives satellite navigation signals, generates common-view observation data, and receives common-view observation data provided by the standard time source through the RDSS link, providing support for the metering device to trace to the standard time source through satellite common-view;

[0011] The frequency standard comparator is used to measure the short-term and long-term stability of the output frequency signal of the time-frequency equipment.

[0012] The spectrum analyzer is used to measure the amplitude, harmonics, and noise of the frequency signals output by time and frequency equipment.

[0013] The oscilloscope is used to measure the amplitude, width, and rise time of the time signal output by the time-frequency device.

[0014] The time interval counter measures the time difference between the time signal output by the time frequency device and the standard time signal, thereby measuring the indicators of synchronization performance, time synchronization deviation, and timekeeping deviation.

[0015] The phase noise tester is used to measure the phase noise and frequency stability of the output frequency signal of time and frequency equipment.

[0016] The metrology and testing management equipment is used to schedule various instruments and equipment, complete the measurement of time and frequency parameters of the time and frequency equipment to be measured, collect measurement data and perform calculations and processing, generate test result reports, and complete metrology and testing business.

[0017] A method for metering remote time and frequency equipment, implemented using the remote time and frequency equipment metering device described above, includes the following steps:

[0018] (1) Transport the off-site time and frequency equipment metering device to the location of the time and frequency equipment to be metered, and connect the power supply of the mobile container;

[0019] (2) After all equipment is powered on and initialized, the metering and testing management equipment receives space wireless satellite navigation signals by scheduling the satellite common-view receiver and generates common-view observation data.

[0020] (3) The metrology and testing management equipment schedules the satellite common view receiver RDSS transceiver link to receive the common view observation data provided by the standard time source. By processing the two sets of common view observation data, the clock difference between the remote time and frequency equipment metrology device and the standard time is obtained. The time and frequency signal phase of the timekeeping device is adjusted so that the remote time and frequency equipment metrology device is synchronized with the standard time.

[0021] (4) Based on the type of measurement index, connect the output signal of the time and frequency equipment to be measured to the measurement channel of the corresponding measuring instrument;

[0022] (5) The metrology instruments connected to the time and frequency equipment to be measured are scheduled through the metrology and testing management equipment to complete the test of the metrology indicators and evaluate the metrology results.

[0023] Furthermore, all the equipment in step (2) includes a temperature control box, a timekeeping device, a satellite common-view receiver, a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, a phase noise tester, and metrology and testing management equipment.

[0024] Furthermore, the measuring instruments in step (4) include a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, and a phase noise tester.

[0025] Furthermore, the measurement index types in step (4) include pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability, phase noise, clock synchronization, timing deviation, and timekeeping deviation.

[0026] Furthermore, the specific method for evaluating the measurement results in step (5) is as follows:

[0027] (501) For the measurement of pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability and phase noise index, the measurement results are obtained directly from the corresponding instruments without the need for other calculations.

[0028] (502) For the measurement of clock synchronization, timing deviation and timekeeping deviation indicators, the measurement and testing management equipment obtains a set of time difference data from the time interval counter and obtains the measurement result by calculating the average value of the set of time difference data.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. The remote time and frequency equipment metering device of the present invention has the characteristics of high integration and easy mobility, making it very suitable for carrying out the metering work of remote time and frequency equipment.

[0031] 2. This invention can trace the standard time through satellite common view and achieve the measurement and calibration of time and frequency equipment parameters through a variety of professional instruments and equipment. It is convenient to use and the results are accurate.

[0032] 3. This invention has the advantages of comprehensive coverage of metrological indicators, high metrological accuracy, and strong applicability, and can effectively support the development of off-site metrological calibration services. Attached Figure Description

[0033] Figure 1 This is a block diagram of the metering device in an embodiment of the present invention.

[0034] Figure 2 This is a block diagram illustrating the implementation principle of the metering device in an embodiment of the present invention. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] A remote time and frequency equipment metering device, based on such Figure 1 The composition shown and Figure 2The principle shown is implemented. The metering device consists of a mobile cabin, a temperature control box, a timekeeping device, a satellite common-view receiver, a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, a phase noise tester, and metering and testing management equipment.

[0037] The mobile container serves as the installation platform for all instruments and equipment, providing a suitable working environment and enabling the metrology device to be moved as a whole. The temperature-controlled chamber provides a constant-temperature working environment for the time and frequency equipment under test, reducing the impact of temperature changes on time and frequency measurement. The timekeeping device is the frequency reference source for the entire metrology device, providing multiple high-precision, high-reliability time and frequency references. The satellite common-view receiver receives satellite navigation signals, generates common-view observation data, and receives common-view observation data from the standard time source via the RDSS link, supporting the metrology device's traceability to the standard time source via satellite common-view. The frequency standard comparator is used to assess the short-term and long-term stability of the frequency signals output by the time and frequency equipment. The measurement of time and frequency indicators includes: a spectrum analyzer for measuring the amplitude, harmonics, and noise of the output frequency signal of time and frequency equipment; an oscilloscope for measuring the amplitude, width, and rise time of the output time signal of time and frequency equipment; a time interval counter for measuring the time difference between the output time signal of time and frequency equipment and the standard time signal to measure synchronization performance, timing deviation, and timekeeping deviation; a phase noise tester for measuring the phase noise and frequency stability of the output frequency signal of time and frequency equipment; and a metrology and testing management system for scheduling various instruments and equipment to measure the time and frequency parameters of the time and frequency equipment to be measured, collecting measurement data, performing calculations and processing, generating test result reports, and completing metrology and testing services.

[0038] This embodiment provides a method for metering remote time and frequency equipment. The method uses the above-mentioned metering device and includes the following steps:

[0039] (101) Transport the metering device to the location of the time and frequency equipment to be metered and connect the power supply to the mobile container;

[0040] (102) After all equipment is powered on and initialized, the satellite common-view receiver is scheduled to receive space wireless satellite navigation signals through the metering and testing management equipment to generate common-view observation data.

[0041] (103) The RDSS transceiver link of the satellite common-view receiver of the metrology and testing management equipment receives the common-view observation data provided by the standard time source. By processing the two sets of common-view observation data, the clock difference between the metrology device and the standard time is obtained, and the phase of the output time and frequency signal of the timekeeping device is adjusted to synchronize the metrology device with the standard time.

[0042] (104) Based on the type of measurement index, connect the output signal of the time and frequency device to be measured to the measurement channel of the corresponding measuring instrument;

[0043] (105) The metrological indicators are tested by the metrological instruments in the metrological testing management equipment scheduling step (104), and the metrological results are evaluated.

[0044] The equipment in step (102) includes a temperature control box, a timekeeping device, a satellite common-view receiver, a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, a phase noise tester, and metrology and testing management equipment.

[0045] The measuring instruments in step (104) include a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, and a phase noise tester.

[0046] The measurement index types in step (104) include pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability, phase noise, clock synchronization, timing deviation, and timekeeping deviation.

[0047] In step (105), the method for scheduling measuring instruments in the metrology and testing management equipment is to send program control commands.

[0048] The evaluation of the measurement results in step (105) is completed by the metrological testing management equipment, including the following steps:

[0049] (201) For the measurement of pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability and phase noise index, the measurement results are obtained directly from the corresponding instruments without any other calculations.

[0050] (202) For the measurement of clock synchronization, timing deviation and timekeeping deviation indicators, the measurement and testing management equipment obtains a set of time difference data from the time interval counter and obtains the measurement result by calculating the average value of the set of time difference data.

[0051] In summary, this invention provides time and frequency references for various instruments and equipment by tracing the standard time through a satellite common-view receiver. Under the scheduling of the metrology and testing management equipment, the instruments and equipment can achieve universal parameter measurement of time and frequency equipment.

[0052] This invention enables rapid implementation of time and frequency equipment metrology and calibration services in remote locations, meeting the needs for large-scale time and frequency equipment metrology and rapid metrology of time and frequency equipment under special environments.

[0053] In addition to the above embodiments, the present invention may have other implementation methods. All technical solutions that adopt equivalent substitution or equivalent substitution form fall within the protection scope claimed by the present invention.

Claims

1. A remote time and frequency equipment metering device, characterized in that, This includes mobile shelters, temperature-controlled boxes, timekeeping devices, satellite common-view receivers, frequency standard comparators, spectrum analyzers, oscilloscopes, time interval counters, phase noise testers, and metrology and testing management equipment; The mobile cabin serves as the installation platform for all instruments and equipment, providing a working environment for each instrument and equipment, and enabling the measuring device to be moved as a whole. The temperature control box provides a constant temperature working environment for the time and frequency equipment under test, reducing the impact of temperature changes on the measurement of time and frequency indicators. The timekeeping device is the time and frequency reference source for the entire metering device, providing multiple high-precision and high-reliability time and frequency references for the entire metering device; The satellite common-view receiver receives satellite navigation signals, generates common-view observation data, and receives common-view observation data provided by the standard time source through the RDSS link, providing support for the metering device to trace to the standard time source through satellite common-view; The frequency standard comparator is used to measure the short-term and long-term stability of the output frequency signal of the time-frequency equipment. The spectrum analyzer is used to measure the amplitude, harmonics, and noise of the frequency signals output by time and frequency equipment. The oscilloscope is used to measure the amplitude, width, and rise time of the time signal output by the time-frequency device. The time interval counter measures the time difference between the time signal output by the time frequency device and the standard time signal, thereby measuring the indicators of synchronization performance, time synchronization deviation, and timekeeping deviation. The phase noise tester is used to measure the phase noise and frequency stability of the output frequency signal of time and frequency equipment. The metrology and testing management equipment is used to schedule various instruments and equipment, complete the measurement of time and frequency parameters of the time and frequency equipment to be measured, collect measurement data and perform calculations and processing, generate test result reports, and complete metrology and testing business.

2. A method for metering remote time and frequency equipment, characterized in that, The method of using the remote time and frequency equipment metering device as described in claim 1 includes the following steps: (1) Transport the off-site time and frequency equipment metering device to the location of the time and frequency equipment to be metered, and connect the power supply of the mobile container; (2) After all equipment is powered on and initialized, the metering and testing management equipment receives space wireless satellite navigation signals by scheduling the satellite common-view receiver and generates common-view observation data. (3) The metrology and testing management equipment schedules the satellite common view receiver RDSS transceiver link to receive the common view observation data provided by the standard time source. By processing the two sets of common view observation data, the clock difference between the remote time and frequency equipment metrology device and the standard time is obtained. The time and frequency signal phase of the timekeeping device is adjusted so that the remote time and frequency equipment metrology device is synchronized with the standard time. (4) Based on the type of measurement index, connect the output signal of the time and frequency equipment to be measured to the measurement channel of the corresponding measuring instrument; (5) The metrology instruments connected to the time and frequency equipment to be measured are scheduled through the metrology and testing management equipment to complete the test of the metrology indicators and evaluate the metrology results.

3. The method for metering remote time and frequency equipment according to claim 2, characterized in that, All equipment in step (2) includes a temperature control box, a timekeeping device, a satellite common-view receiver, a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, a phase noise tester, and metrology and testing management equipment.

4. The method for metering remote time and frequency equipment according to claim 2, characterized in that, The measuring instruments in step (4) include a frequency standard comparator, a spectrum analyzer, an oscilloscope, a time interval counter, and a phase noise tester.

5. The method for metering remote time and frequency equipment according to claim 4, characterized in that, The measurement index types in step (4) include pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability, phase noise, clock synchronization, timing deviation, and timekeeping deviation.

6. The method for metering remote time and frequency equipment according to claim 5, characterized in that, The specific method for evaluating the measurement results in step (5) is as follows: (501) For the measurement of pulse signal width and amplitude, pulse signal rise time, frequency signal amplitude, frequency signal harmonic distortion, frequency signal non-harmonic distortion, frequency accuracy, frequency stability and phase noise index, the measurement results are obtained directly from the corresponding instruments without the need for other calculations. (502) For the measurement of clock synchronization, timing deviation and timekeeping deviation indicators, the measurement and testing management equipment obtains a set of time difference data from the time interval counter and obtains the measurement result by calculating the average value of the set of time difference data.

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