WO2018001360A1 - 一种基于北斗卫星的分布式电磁法仪器同步系统及方法 - Google Patents

一种基于北斗卫星的分布式电磁法仪器同步系统及方法 Download PDF

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WO2018001360A1
WO2018001360A1 PCT/CN2017/091161 CN2017091161W WO2018001360A1 WO 2018001360 A1 WO2018001360 A1 WO 2018001360A1 CN 2017091161 W CN2017091161 W CN 2017091161W WO 2018001360 A1 WO2018001360 A1 WO 2018001360A1
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receiver
transmitter
beidou satellite
transceiver module
data
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PCT/CN2017/091161
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English (en)
French (fr)
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杨永友
王中兴
底青云
张文秀
陈彬彬
裴仁忠
吴树军
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中国科学院地质与地球物理研究所
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Publication of WO2018001360A1 publication Critical patent/WO2018001360A1/zh
Priority to US15/881,373 priority Critical patent/US10168432B2/en

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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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/42—Determining position
    • G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
    • G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R40/00—Correcting the clock frequency
    • G04R40/06—Correcting the clock frequency by computing the time value implied by the radio signal
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
    • H04B7/18582—Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access

Definitions

  • the invention relates to the field of field data collection technology, in particular to a distributed electromagnetic method instrument synchronization system and method based on Beidou satellite.
  • a transmitter When a distributed magnetotelluric instrument is operated, a transmitter generally transmits a signal to the outside, and transmits different frequency signals at different time periods according to a predetermined time parameter table.
  • Several receivers also set the corresponding parameters according to the same timetable setting parameters, collect signals and process the analysis.
  • the working area of the transmitter and the receiver is more than several kilometers away, and the receivers are distributed everywhere according to a certain plan, and no cables are connected to each other, and no information is exchanged.
  • the current method is to configure a GPS receiver on both the transmitter and the receiver to perform synchronous operation according to GPS timing.
  • the disadvantage of this method is that the timetable followed by the transmitter and receiver can only be set before the job, and once the job is started, the timetable cannot be changed or adjusted.
  • the measurement time required for different frequency signals is not the same due to the different geology characteristics of the work site.
  • you change or adjust the parameters you can only stop the current job, which is not conducive to efficient operation.
  • the distributed magnetotelluric instrument works usually in the field, and the public communication means is relatively backward or not at all, which makes manual communication more difficult, which is not conducive to the above operation process.
  • the technical problem mainly solved by the invention is to provide a distributed electromagnetic method instrument synchronization system and method based on Beidou satellite, which can integrate time, positioning and communication functions, and facilitate timely adjustment of data, thereby ensuring the quality of collected data.
  • a technical solution adopted by the present invention is to provide a distributed electromagnetic method based on the Beidou satellite.
  • the method includes: the transmitter and the receiver respectively establish a connection with the Beidou satellite to realize position and time synchronization; The transmitter and the receiver acquire a second pulse signal, and adjust the temperature-compensated crystal oscillator according to the second pulse signal to bring the frequency to a preset value; during the field operation, the transmitter and the receiver pass the Beidou satellite Communicate with each other and adjust the operation process in time.
  • the step of implementing time synchronization includes: acquiring a second pulse signal, the rising edge of the second pulse signal is a start time of the second; the transmitter and the receiver respectively acquire their own NMEA statement, and the NMEA statement includes a latitude , elevation, time and speed information; the transmitter and the receiver respectively implement time synchronization with the second pulse signal according to their own NMEA statement.
  • the step of adjusting the self-tempering crystal oscillator according to the second pulse signal includes:
  • the receiver and the transmitter respectively count the signals output by their own temperature-compensated crystal oscillators.
  • the count value of the N seconds pulse signals is n
  • the steps of the transmitter and the receiver communicating with each other through the BeiDou satellite include:
  • Data acquisition step the receiver collects data and performs calculations in a specific frequency segment, and evaluates the quality of the collected data to determine whether a sufficient amount of data within the specific frequency segment is acquired;
  • An evaluation step after the receiver completes the quality assessment of the collected data, the evaluation result is transmitted to the transmitter through the Beidou satellite;
  • Adjusting step after receiving the message of all the receivers entering the network, the transmitter performs further analysis and judgment, adjusts the power intensity of the transmitted signal, and sends the information group of time and power intensity to all receivers;
  • the transmitter After completing the signal transmission for a particular frequency segment, the transmitter makes adjustments to change the transmission frequency, and also uses the Beidou satellite to transmit the newly adjusted information to the receiver, which continues to acquire data.
  • the distributed electromagnetic method instrument synchronization method based on Beidou satellite also includes:
  • a parameter table is set, the parameter table containing the frequency of the transmitted signal and its duration parameter information, and the receiver and the transmitter are each saved for standby.
  • another technical solution adopted by the present invention is to provide a distributed electromagnetic instrument synchronization system based on Beidou satellite
  • the distributed electromagnetic instrument synchronization system based on Beidou satellite includes a transmitter, a receiver, and a Beidou satellite and a ground controller, wherein: the transmitter and the receiver respectively comprise a first transceiver module and a second transceiver module, wherein the first transceiver module and the second transceiver module respectively establish a connection with the Beidou satellite Realizing position and time synchronization of the transmitter and the receiver; the first transceiver module and the second transceiver module respectively output a second pulse signal, and the transmitter and the receiver respectively comprise a first main controller and a a second main controller, the first main controller and the second main controller respectively acquiring the second pulse signal, and adjusting a temperature compensation crystal oscillator of the transmitter and the receiver according to a second pulse signal, so that The frequency reaches a preset value; during the field operation, the first transcei
  • the first main controller and the second main controller respectively acquire a second pulse signal, and the rising edge of the second pulse signal is a start time of the second;
  • the first transceiver module and the second transceiver module respectively output their own NMEA statements, where the NMEA statement includes latitude, elevation, time, and speed information;
  • the first main controller and the second main controller respectively obtain NMEA statements output by the first transceiver module and the second transceiver module, and respectively implement time according to the acquired NMEA statement and the second pulse signal Synchronize.
  • the receiver further includes an acquisition module, the acquisition module collects data in a specific frequency segment, the second controller performs calculation, and evaluates the quality of the collected data to determine whether the specific Within the frequency range A sufficient amount of data;
  • the second transceiver module transmits the evaluation result to the first transceiver module of the transmitter through the BeiDou satellite;
  • the first transceiver module After receiving the message of all the receivers of the network, the first transceiver module further analyzes and determines the power intensity of the transmitted signal, and the first transceiver module combines time and power. A strong information group is sent to all receivers;
  • the first main controller of the transmitter After completing the signal transmission of a specific frequency segment, the first main controller of the transmitter makes an adjustment to change the transmission frequency, and the first transceiver module also transmits the newly adjusted information to the receiver using the Beidou satellite. The receiver continues to collect data.
  • the ground controller sets a parameter table before the data is collected, and the parameter table includes the frequency of the transmitted signal and the duration parameter information, and the receiver and the transmitter are respectively saved for standby.
  • the present invention provides a distributed electromagnetic method instrument synchronization system and method based on Beidou satellite, the method comprising: establishing a connection between the transmitter and the receiver and the Beidou satellite, respectively Realizing position and time synchronization; the transmitter and the receiver acquire a second pulse signal, and adjust the temperature-compensated crystal oscillator according to the second pulse signal to make the frequency reach a preset value; in the field operation, the transmitter and the receiver pass Beidou satellites communicate with each other to adjust the operation process in time. Therefore, the invention can integrate the time, positioning and communication functions into one body, and facilitates timely adjustment of data, thereby ensuring the quality of the collected data.
  • FIG. 1 is a flow chart of a method for synchronizing distributed electromagnetic instruments based on Beidou satellite according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a distributed electromagnetic instrument synchronization system based on Beidou satellite according to an embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for synchronizing distributed electromagnetic instruments based on Beidou satellite according to an embodiment of the present invention. As shown in FIG. 1, the method of this embodiment includes the following steps:
  • Step S1 The transmitter and the receiver respectively establish a connection with the Beidou satellite to realize position and time synchronization.
  • the transmitter and the receiver specifically establish a communication pipe through the short message transmission function of the Beidou satellite to establish a connection.
  • the specific steps of realizing time synchronization are as follows: firstly, the second pulse signal is obtained, and the rising edge of the second pulse signal is the starting time of the second, and the precision thereof can reach 40 nS.
  • the transmitter and receiver then respectively acquire their own NMEA statements, where the NMEA statements include latitude, elevation, time, and speed information.
  • the NMEA statement is periodically output at intervals of a certain time, and the output interval is preferably 1 second.
  • the transmitter and receiver respectively implement time synchronization according to their own NMEA statement and the second pulse signal.
  • the time synchronization accuracy of different transmitters and receivers can be up to 40nS.
  • Step S2 The transmitter and the receiver acquire the second pulse signal, and adjust the temperature compensation crystal oscillator according to the second pulse signal to make the frequency reach the preset value.
  • the second pulse signal is first used as the start and stop signal of the counting. Then, the receiver and the transmitter respectively count the signals of their own temperature-compensated crystal oscillators.
  • the count value is n
  • Step S3 During the field operation, the transmitter and the receiver communicate with each other through the Beidou satellite to adjust the operation process in time.
  • the transmitter communicates with the Beidou satellite and the receiver according to preset parameters.
  • the steps of collecting data, evaluating steps, and adjusting steps are included.
  • the step of collecting data is: in a specific frequency segment, the receiver collects data and performs calculations, and evaluates the quality of the collected data to determine whether a sufficient amount of data within a specific frequency segment is acquired.
  • the evaluation step is to transmit the evaluation result to the transmitter through Beidou satellite after the receiver completes the quality evaluation of the collected data, specifically through the short message transmission function of Beidou satellite.
  • the adjustment step is that after receiving the message of all the receivers of the network, the transmitter makes further analysis and judgment, adjusts the power intensity of the transmitted signal, and sends the information group of time and power intensity to all receivers.
  • the collecting data step, the evaluating step, and the adjusting step are repeatedly performed to enable the receiver to acquire data of a preset quality.
  • the transmitter makes adjustments to change the transmission frequency, and also uses the short message transmission function of the Beidou satellite to transmit the newly adjusted information to the receiver, and the receiver continues to collect data. That is, the above-mentioned data collection step, evaluation step, and adjustment step are continued. Until the preset measurement cycle is completed.
  • the parameter table before collecting the data, the parameter table is further set, and the parameter table includes the frequency of the transmitted signal and the duration parameter information thereof, and the receiver and the transmitter respectively save and reserve.
  • FIG. 2 is a schematic structural diagram of a distributed electromagnetic instrument synchronization system based on Beidou satellite according to an embodiment of the present invention.
  • the system 10 of the present embodiment includes a transmitter 11, a receiver 12, a Beidou satellite 13, and a ground controller 14.
  • the transmitter 11 includes a first transceiver module 111, a first main controller 112, and a first counter 113.
  • the receiver 12 includes a second transceiver module 121, a second master controller 122, and a second counter 123.
  • the first transceiver module 111 and the second transceiver module 121 respectively establish a connection with the Beidou satellite 13 to realize position and time synchronization of the transmitter 11 and the receiver 12.
  • the first transceiver module 111 and the second transceiver module 121 are integrated as user terminals in the user's instrument, that is, the transmitter 11 and the receiver 12.
  • the first transceiver module 111 and the second transceiver module 121 function as an independent function module, and establish a communication pipeline with the Beidou satellite 13, and complete functions such as satellite signal reception, position and time information calculation, and short message transmission and reception channel establishment. It is connected to the main controller through a common communication interface.
  • the first transceiver module 111 and the second transceiver module 121 periodically output their own NMEA statements at intervals of a certain time, and the preferred output interval is 1 second.
  • the NMEA statement contains information such as latitude and longitude, elevation, time, speed, etc.
  • it uses an independent 10O output second pulse signal.
  • the rising edge of the second pulse signal is the starting time of the second, and the precision can reach 40nS.
  • the first main controller 112 and the second main controller 113 respectively acquire the second pulse signal and acquire the NMEA statements output by the first transceiver module 111 and the second transceiver module 121, and respectively implement time synchronization according to the acquired NMEA statement and the second pulse signal.
  • the time synchronization accuracy of different transmitters and receivers can be up to 40nS.
  • the first main controller 112 and the second main controller 122 respectively acquire the second pulse signal, and according to the second The pulse signal adjusts the temperature-compensated crystal oscillator of the transmitter 11 and the receiver 12 to a predetermined value.
  • the second pulse signal is used as a start/stop signal for counting by the counter, and the first counter 113 and the second counter 123 respectively count the signals output by the transmitter 11 and the receiver 12 of the temperature-compensated crystal oscillator, respectively, at N seconds pulse signals.
  • the first transceiver module 111 of the transmitter 11 and the second transceiver module 121 of the receiver 12 communicate with each other through the Beidou satellite 13 to adjust the operation process in time.
  • the first transceiver module 111 of the transmitter 11 is Communication is performed by the Beidou satellite 13 and the second transceiver module 121 of the receiver 12 according to preset parameters.
  • the specific communication process is:
  • the receiver 12 further includes an acquisition module 124.
  • the acquisition module 124 collects data in a specific frequency range, the second main controller 123 performs calculations, and evaluates the quality of the collected data to determine whether a specific frequency segment is acquired. A sufficient amount of data.
  • the second transceiver module 121 transmits the evaluation result to the first transceiver module 111 of the transmitter 11 through the Beidou satellite 13.
  • the first transceiver module 111 After receiving the message of all the receivers 12 connected to the network, the first transceiver module 111 performs further analysis and determination to adjust the power strength of the transmitted signal, and the first transceiver module 111 adjusts the time and power intensity.
  • the message group is sent to all receivers 12.
  • the data is collected repeatedly, the quality of the data is evaluated, and the power intensity of the transmitted signal is adjusted so that the receiver obtains the preset quality data.
  • the first main controller 112 of the transmitter 11 makes an adjustment to change the transmission frequency, and the first transceiver module 111 also uses the Beidou satellite 13 to transmit the newly adjusted information to the receiver, the receiver. Continue to collect data.
  • the ground controller 14 sets a parameter table before the data is collected, and the parameter table includes the frequency of the transmitted signal and the duration parameter information thereof, and the receiver and the transmitter respectively save and reserve.
  • the invention can integrate the time, positioning and communication functions, and the receiver can feed back the result to the transmitter in time, and the transmitter can adjust in time, work more efficiently, and ensure the quality of the collected data.

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Abstract

一种基于北斗卫星的分布式电磁法仪器同步系统（10）及方法，包括：发射机（11）和接收机（12）分别与北斗卫星（13）建立连接，实现位置定位和时间同步（S1）；发射机（11）和接收机（12）获取秒脉冲信号，并根据秒脉冲信号调整自身温补晶振，使其频率达到预设值（S2）；在野外作业过程中，发射机（11）和接收机（12）通过北斗卫星（13）进行相互通信，及时调整作业过程（S3）。通过该方式，该同步系统（10）及方法能够集授时、定位、通信功能于一体，方便数据采集流程的及时调整，从而保证采集数据的质量并提高野外作业的效率。

Description

一种基于北斗卫星的分布式电磁法仪器同步系统及方法 技术领域
本发明涉及野外数据采集技术领域，特别是涉及一种基于北斗卫星的分布式电磁法仪器同步系统及方法。
背景技术
分布式大地电磁法仪器作业时，一般是一台发射机向外发射信号，其按照既定的时刻参数表在不同的时间段发射不同的频率信号。若干台接收机也依照相同的时刻表设置参数设置相应参数，采集信号并处理分析。一般而言，发射机与接收机所处的作业区距离达几公里以上，接收机也按照一定的规划分布在各处，彼此之间没有线缆相连，亦无信息交互。
为使得发射机和接收机在动作上同步，目前所使用的方法是在发射机和接收机上都配置GPS接收机，依据GPS授时进行同步操作。这种方法的缺点是，发射机和接收机所遵循的时刻表只能在作业之前设定，一旦开始作业，则不能更改或调整时刻表。然而在实际野外作业中，由于工区现场地学特性不同，不同频率信号所需的测量时间并不相同，为了取得完整、优质的数据，在设计时刻表时需要将各频率信号的时间设置到足够长，而若更改或调整参数，只能停止当前作业，这不利于实现高效率作业。
另一方面，分布式大地电磁法仪器作业地通常在野外，公共通信手段相对较为落后或者根本没有，这使得人工交流较为困难，不利于上述操作流程的进行。
发明内容
本发明主要解决的技术问题是提供一种基于北斗卫星的分布式电磁法仪器同步系统及方法，能够集授时、定位、通信功能于一体，方便数据的及时调整，从而保证了采集数据的质量。
为实现上述目的，本发明采用的一个技术方案是：提供一种基于北斗卫星的分布式电磁法仪器同步方法包括：发射机和接收机分别与北斗卫星建立连接，实现位置定位和时间同步；所述发射机和接收机获取秒脉冲信号，并根据秒脉冲信号调整自身温补晶振，使其频率达到预设值；在野外作业过程中，所述发射机和所述接收机通过所述北斗卫星进行相互通信，及时调整作业过程。
其中，实现时间同步的步骤包括：获取秒脉冲信号，所述秒脉冲信号的上升沿为秒的起始时刻；所述发射机和接收机分别获取其自身的NMEA语句，所述NMEA语句包括纬度、高程、时间以及速度信息；所述发射机和接收机分别根据自身的NMEA语句与所述秒脉冲信号实现时间同步。
其中，根据秒脉冲信号调整自身温补晶振的步骤包括：
所述接收机和所述发射机分别对自身的温补晶振输出的信号进行计数，在N个所述秒脉冲信号的脉冲时间内，得到的计数值是n，则温补晶振的频率是F＝n/N(Hz)；
将所述F与其预设值进行对比，根据误差调节所述温补晶振的调节控制电压，使其 输出频率与预设值之间的误差小于预设的阈值。
其中，发射机和所述接收机通过所述北斗卫星进行相互通信的步骤包括：
采集数据步骤：在一特定频率段内，所述接收机采集数据并进行计算，并评估所采集的数据的质量，以确定是否获取了所述特定频率段内的足够数量的数据；
评估步骤：所述接收机完成采集的数据的质量评估后，通过所述北斗卫星将评估结果传送给所述发射机；
调整步骤：所述发射机在收到所有入网的接收机的消息后，做进一步分析判断，对发射信号的功率强度做出调整，并将时间和功率强度的信息群发给所有接收机；
反复执行所述采集数据步骤、评估步骤以及调整步骤，以使接收机获取到预设质量的数据；
完成一个特定频率段的信号发射后，所述发射机做出调整，改变发射频率，同样使用北斗卫星将新调整的信息发送给接收机，所述接收机继续采集数据。
其中，基于北斗卫星的分布式电磁法仪器同步方法还包括：
在进行采集数据前，设定参数表，所述参数表包含发射信号的频率及其持续时间参数信息，所述接收机和发射机各自保存，以备用。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种基于北斗卫星的分布式电磁法仪器同步系统，该基于北斗卫星的分布式电磁法仪器同步系统包括发射机、接收机、北斗卫星以及地面控制器，其中：所述发射机和接收机分别包括第一收发模块和第二收发模块，所述第一收发模块和所述第二收发模块分别与所述北斗卫星建立连接，实现所述发射机和接收机的位置定位和时间同步；所述第一收发模块和所述第二收发模块分别输出秒脉冲信号，所述发射机和接收机分别包括第一主控制器和第二主控制器，所述第一主控制器和所述第二主控制器分别获取所述秒脉冲信号，并根据秒脉冲信号调整所述发射机和所述接收机自身的温补晶振，使其频率达到预设值；在野外作业过程中，所述发射机的第一收发模块和所述接收机的第二收发模块通过所述北斗卫星进行相互通信，及时调整作业过程。
其中，第一主控制器和所述第二主控器分别获取秒脉冲信号，所述秒脉冲信号的上升沿为秒的起始时刻；
所述第一收发模块和所述第二收发模块分别输出自身的NMEA语句，所述NMEA语句包括纬度、高程、时间以及速度信息；
所述第一主控制器和所述第二主控器分别获取所述第一收发模块和所述第二收发模块输出的NMEA语句，并分别根据获取的NMEA语句与所述秒脉冲信号实现时间同步。
其中，发射机和所述接收机分别包括第一计数器和第二计数器，所述第一计数器和所述第二计数器分别对所述发射机和所述接收机自身的温补晶振输出的信号进行计数，在N个所述秒脉冲信号的脉冲时间内，得到的计数值是n，则所述第一主控制器和所述第二主控制器计算各自的温补晶振的频率是F＝n/N(Hz)，并将所述F与其预设值进行对比，根据误差调节所述温补晶振的调节控制电压，使其输出频率与预设值之间的误差小于预设的阈值。
其中，接收机还包括采集模块，在一特定频率段内，所述采集模块采集数据，所述第二主控器进行计算，并评估所采集的数据的质量，以确定是否获取了所述特定频率段内 的足够数量的数据；
所述采集模块完成采集的数据的质量评估后，所述第二收发模块通过所述北斗卫星将评估结果传送给所述发射机的第一收发模块；
所述第一收发模块在收到所有入网的接收机的消息后，所述第一主控器做进一步分析判断，对发射信号的功率强度做出调整，所述第一收发模块将时间和功率强度的信息群发给所有接收机；
反复采集数据、对数据进行质量评估以及对发射信号的功率强度进行调整，以使接收机获取到预设质量的数据；
完成一个特定频率段的信号发射后，所述发射机的第一主控制器做出调整，改变发射频率，所述第一收发模块同样使用北斗卫星将新调整的信息发送给接收机，所述接收机继续采集数据。
其中，地面控制器在进行采集数据前，设定参数表，所述参数表包含发射信号的频率及其持续时间参数信息，所述接收机和发射机各自保存，以备用。
本发明的有益效果是：区别于现有技术的情况，本发明提供一种基于北斗卫星的分布式电磁法仪器同步系统及方法，该方法包括：发射机和接收机分别与北斗卫星建立连接，实现位置定位和时间同步；所述发射机和接收机获取秒脉冲信号，并根据秒脉冲信号调整自身温补晶振，使其频率达到预设值；在野外作业过程中，发射机和接收机通过北斗卫星进行相互通信，及时调整作业过程。因此，本发明能够集授时、定位、通信功能于一体，方便数据的及时调整，从而保证了采集数据的质量。
附图说明
图1是本发明实施方式提供的一种基于北斗卫星的分布式电磁法仪器同步方法的流程图；
图2是本发明实施方式提供的一种基于北斗卫星的分布式电磁法仪器同步系统的结构示意图。
具体实施方式
参阅图1，图1是本发明实施方式提供的一种基于北斗卫星的分布式电磁法仪器同步方法的流程图。如图1所示，本实施例的方法包括以下步骤：
步骤S1：发射机和接收机分别与北斗卫星建立连接，实现位置定位和时间同步。
本步骤中，发射机和接收机具体是通过北斗卫星的短消息传送功能建立通信管道，以建立连接。
实现时间同步的具体步骤为：首先获取秒脉冲信号，秒脉冲信号的上升沿为秒的起始时刻，其精度可达40nS。然后发射机和接收机分别获取其自身的NMEA语句，其中，NMEA语句包括纬度、高程、时间以及速度信息。NMEA语句是按照一定时间的间隔周期性输出的，并且输出间隔优选为1秒。最后发射机和接收机分别根据自身的NMEA语句与秒脉冲信号实现时间同步。不同的发射机和接收机的时间同步精度最高可以到40nS。
步骤S2：发射机和接收机获取秒脉冲信号，并根据秒脉冲信号调整自身温补晶振，使其频率达到预设值。
本步骤中，具体为首先将秒脉冲信号作为计数的启停信号。然后接收机和发射机分别对自身的温补晶振输出的信号进行计数，在N个秒脉冲信号的脉冲时间内，得到的计数值是n，则温补晶振的频率是F＝n/N(Hz)，最后将F与其预设值进行对比，根据误差调节温补晶振的调节控制电压，使其输出频率与预设值之间的误差小于预设的阈值。
步骤S3：在野外作业过程中，发射机和接收机通过北斗卫星进行相互通信，及时调整作业过程。
本步骤中，发射机是根据预设的参数通过北斗卫星和接收机进行通信。
具体包括采集数据步骤、评估步骤以及调整步骤。具体而言，采集数据步骤为：在一特定频率段内，接收机采集数据并进行计算，并评估所采集的数据的质量，以确定是否获取了特定频率段内的足够数量的数据。评估步骤为接收机完成采集的数据的质量评估后，通过北斗卫星将评估结果传送给发射机，具体是通过北斗卫星的短消息传送功能进行传送。调整步骤为发射机在收到所有入网的接收机的消息后，做进一步分析判断，对发射信号的功率强度做出调整，并将时间和功率强度的信息群发给所有接收机。
进一步的，反复执行上述的采集数据步骤、评估步骤以及调整步骤，以使接收机获取到预设质量的数据。
更进一步的，在完成一个特定频率段的信号发射后，发射机做出调整，改变发射频率，同样使用北斗卫星的短消息传送功能将新调整的信息发送给接收机，接收机继续采集数据。即继续执行上述的的采集数据步骤、评估步骤以及调整步骤。直到完成预设的测量周期。
其中，在进行采集数据前，进一步设定参数表，参数表包含发射信号的频率及其持续时间参数信息，接收机和发射机各自保存，以备用。
请参阅图2，图2是本发明实施例提供的一种基于北斗卫星的分布式电磁法仪器同步系统的结构示意图。如图2所示，本实施例的系统10包括发射机11、接收机12、北斗卫星13以及地面控制器14。其中，发射机11包括第一收发模块111、第一主控制器112以及第一计数器113。接收机12包括第二收发模块121、第二主控制器122以及第二计数器123。
第一收发模块111和第二收发模块121分别与北斗卫星13建立连接，实现发射机11和接收机12的位置定位和时间同步。
具体的，第一收发模块111和第二收发模块121作为用户端集成在用户的仪器中，即发射机11和接收机12中。在实际工作中，第一收发模块111和第二收发模块121作为一个独立功能模块，与北斗卫星13建立通信管道，完成卫星信号接收、位置与时间信息解算、短消息收发通道建立等功能，其与主控制器之间通过通用的通信接口相连。
本实施例中，第一收发模块111和第二收发模块121按照一定时间的间隔周期性输出自身的NMEA语句，优选输出间隔为1秒。NMEA语句包含经纬度、高程、时间、速度等信息，除此之外，还使用独立的1O口输出秒脉冲信号，该秒脉冲信号的上升沿为秒的起始时刻，精度可达40nS。
第一主控制器112和第二主控器113分别获取秒脉冲信号以及获取第一收发模块111和第二收发模块121输出的NMEA语句，并分别根据获取的NMEA语句与秒脉冲信号实现时间同步。不同的发射机、接收机的时间同步精度最高可以到40nS。
进一步的，第一主控制器112和第二主控制器122分别获取秒脉冲信号，并根据秒 脉冲信号调整发射机11和接收机12自身的温补晶振，使其频率达到预设值。具体的，将秒脉冲信号作为计数器计数的启停信号，第一计数器113和第二计数器123分别对发射机11和接收机12自身的温补晶振输出的信号进行计数，在N个秒脉冲信号的脉冲时间内，得到的计数值是n，则第一主控制器111和第二主控制器121计算各自的温补晶振的频率是F＝n/N(Hz)，并将F与其预设值进行对比，根据误差调节温补晶振的调节控制电压，使其输出频率与预设值之间的误差小于预设的阈值。
在野外作业过程中，发射机11的第一收发模块111和接收机12的第二收发模块121通过北斗卫星13进行相互通信，及时调整作业过程具体的，发射机11的第一收发模块111是根据预设的参数通过北斗卫星13和接收机12的第二收发模块121进行通信。具体通信过程为：
接收机12还包括采集模块124，在一特定频率段内，采集模块124采集数据，第二主控器123进行计算，并评估所采集的数据的质量，以确定是否获取了特定频率段内的足够数量的数据。采集模块124完成采集的数据的质量评估后，第二收发模块121通过北斗卫星13将评估结果传送给发射机11的第一收发模块111。第一收发模块111在收到所有入网的接收机12的消息后，第一主控器112做进一步分析判断，对发射信号的功率强度做出调整，第一收发模块111将时间和功率强度的信息群发给所有接收机12。反复采集数据、对数据进行质量评估以及对发射信号的功率强度进行调整，以使接收机获取到预设质量的数据。完成一个特定频率段的信号发射后，发射机11的第一主控制器112做出调整，改变发射频率，第一收发模块111同样使用北斗卫星13将新调整的信息发送给接收机，接收机继续采集数据。
其中，地面控制器14在进行采集数据前，设定参数表，参数表包含发射信号的频率及其持续时间参数信息，接收机和发射机各自保存，以备用。
综上所述，本发明能够集授时、定位、通信功能于一体，接收机能及时将结果反馈给发射机，发射机能够及时进行调整，工作效率更高，并保证了采集数据的质量。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种基于北斗卫星的分布式电磁法仪器同步方法，其特征在于，所述基于北斗卫星的分布式电磁法仪器同步方法包括：
    发射机和接收机分别与北斗卫星建立连接，实现位置定位和时间同步；
    所述发射机和接收机获取秒脉冲信号，并根据秒脉冲信号调整自身温补晶振，使其频率达到预设值；
    在野外作业过程中，所述发射机和所述接收机通过所述北斗卫星进行相互通信，及时调整作业过程。
  2. 根据权利要求1所述的基于北斗卫星的分布式电磁法仪器同步方法，其特征在于，所述实现时间同步的步骤包括：
    获取秒脉冲信号，所述秒脉冲信号的上升沿为秒的起始时刻；
    所述发射机和接收机分别获取其自身的NMEA语句，所述NMEA语句包括纬度、高程、时间以及速度信息；
    所述发射机和接收机分别根据自身的NMEA语句与所述秒脉冲信号实现时间同步。
  3. 根据权利要求1所述的基于北斗卫星的分布式电磁法仪器同步方法，其特征在于，所述根据秒脉冲信号调整自身温补晶振的步骤包括：
    所述接收机和所述发射机分别对自身的温补晶振输出的信号进行计数，在N个所述秒脉冲信号的脉冲时间内，得到的计数值是n，则温补晶振的频率是F＝n/N(Hz)；
    将所述F与其预设值进行对比，根据误差调节所述温补晶振的调节控制电压，使其输出频率与预设值之间的误差小于预设的阈值。
  4. 根据权利要求1所述的基于北斗卫星的分布式电磁法仪器同步方法，其特征在于，所述发射机和所述接收机通过所述北斗卫星进行相互通信的步骤包括：
    采集数据步骤：在一特定频率段内，所述接收机采集数据并进行计算，并评估所采集的数据的质量，以确定是否获取了所述特定频率段内的足够数量的数据；
    评估步骤：所述接收机完成采集的数据的质量评估后，通过所述北斗卫星将评估结果传送给所述发射机；
    调整步骤：所述发射机在收到所有入网的接收机的消息后，做进一步分析判断，对发射信号的功率强度做出调整，并将时间和功率强度的信息群发给所有接收机；
    反复执行所述采集数据步骤、评估步骤以及调整步骤，以使接收机获取到预设质量的数据；
    完成一个特定频率段的信号发射后，所述发射机做出调整，改变发射频率，同样使用北斗卫星将新调整的信息发送给接收机，所述接收机继续采集数据。
  5. 根据权利要求1所述的基于北斗卫星的分布式电磁法仪器同步方法，其特征在于，所述基于北斗卫星的分布式电磁法仪器同步方法还包括：
    在进行采集数据前，设定参数表，所述参数表包含发射信号的频率及其持续时间参数信息，所述接收机和发射机各自保存，以备用。
  6. 一种基于北斗卫星的分布式电磁法仪器同步系统，其特征在于，所述基于北斗卫星的分布式电磁法仪器同步系统包括发射机、接收机、北斗卫星以及地面控制器，其中：
    所述发射机和接收机分别包括第一收发模块和第二收发模块，所述第一收发模块和所述第二收发模块分别与所述北斗卫星建立连接，实现所述发射机和接收机的位置定位和时 间司步；
    所述第一收发模块和所述第二收发模块分别输出秒脉冲信号，所述发射机和接收机分别包括第一主控制器和第二主控制器，所述第一主控制器和所述第二主控制器分别获取所述秒脉冲信号，并根据秒脉冲信号调整所述发射机和所述接收机自身的温补晶振，使其频率达到预设值；
    在野外作业过程中，所述发射机的第一收发模块和所述接收机的第二收发模块通过所述北斗卫星进行相互通信，及时调整作业过程。
  7. 根据权利要求6所述的基于北斗卫星的分布式电磁法仪器同步系统，其特征在于，所述第一主控制器和所述第二主控器分别获取秒脉冲信号，所述秒脉冲信号的上升沿为秒的起始时刻；
    所述第一收发模块和所述第二收发模块分别输出自身的NMEA语句，所述NMEA语句包括纬度、高程、时间以及速度信息；
    所述第一主控制器和所述第二主控器分别获取所述第一收发模块和所述第二收发模块输出的NMEA语句，并分别根据获取的NMEA语句与所述秒脉冲信号实现时间同步。
  8. 根据权利要求6所述的基于北斗卫星的分布式电磁法仪器同步系统，其特征在于，所述发射机和所述接收机分别包括第一计数器和第二计数器，所述第一计数器和所述第二计数器分别对所述发射机和所述接收机自身的温补晶振输出的信号进行计数，在N个所述秒脉冲信号的脉冲时间内，得到的计数值是n，则所述第一主控制器和所述第二主控制器计算各自的温补晶振的频率是F＝n/N(Hz)，并将所述F与其预设值进行对比，根据误差调节所述温补晶振的调节控制电压，使其输出频率与预设值之间的误差小于预设的阈值。
  9. 根据权利要求6所述的基于北斗卫星的分布式电磁法仪器同步系统，其特征在于，接收机还包括采集模块，在一特定频率段内，所述采集模块采集数据，所述第二主控器进行计算，并评估所采集的数据的质量，以确定是否获取了所述特定频率段内的足够数量的数据；
    所述采集模块完成采集的数据的质量评估后，所述第二收发模块通过所述北斗卫星将评估结果传送给所述发射机的第一收发模块；
    所述第一收发模块在收到所有入网的接收机的消息后，所述第一主控器做进一步分析判断，对发射信号的功率强度做出调整，所述第一收发模块将时间和功率强度的信息群发给所有接收机；
    反复采集数据、对数据进行质量评估以及对发射信号的功率强度进行调整，以使接收机获取到预设质量的数据；
    完成一个特定频率段的信号发射后，所述发射机的第一主控制器做出调整，改变发射频率，所述第一收发模块同样使用北斗卫星将新调整的信息发送给接收机，所述接收机继续采集数据。
  10. 根据权利要求6所述的基于北斗卫星的分布式电磁法仪器同步系统，其特征在于，所述地面控制器在进行采集数据前，设定参数表，所述参数表包含发射信号的频率及其持续时间参数信息，所述接收机和发射机各自保存，以备用。
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