A radio astronomy total power measurement device and measurement method

Abstract

The present disclosure provides a radio astronomy total power measurement device, including: two power detection probes, a programmable logic device and a controller; the device includes a free trigger mode and an external trigger mode; the two power detection probes are used to collect power data of dual-linear polarization signals or circular polarization signals received by a radio astronomy receiver; the programmable logic device is used to generate a corresponding trigger signal according to a preset trigger mode in the external trigger mode to drive the two power detection probes to collect power data, and generate an interrupt signal after the two power detection probes complete data collection; the controller is used to electrically control the programmable logic device and the two power detection probes to send a first control signal in the free trigger mode to enable the two power detection probes to collect power data and obtain the power data; or, in the external trigger mode, obtain power data according to the interrupt signal. The present disclosure also provides a radio astronomy total power measurement method.

Description

Technical Field

[0001] The present disclosure relates to the technical field of radio astronomy, and in particular to a radio astronomy total power measurement device and a measurement method. Background Art

[0002] In the field of radio astronomy, the method of measuring the total power of the signal received by the radio astronomy receiver is often used to study the radio source flux. It is used to determine the pointing direction and efficiency of the radio telescope in a certain band, as well as to measure the radio astronomy receiver. The measurement position is usually at the first intermediate frequency of the receiver, and the device for measuring the total power is called the total power terminal.

[0003] In the prior art, the device for measuring total power is generally used in the last intermediate frequency of the receiver, which is relatively low, generally 0-1024 GHz. The signal in this frequency range is introduced from the radio telescope through a very long signal cable. Due to the long cable, it is easy to cause signal instability and cause uncertain changes in power. There may also be strong external interference signals coupled in through the cable. In addition, the existing terminal is generally used in a stable usage scenario. It integrates many other astronomical applications and needs to be equipped with a more powerful data storage system, control system, time and frequency system, etc. It is too complex and inflexible for some applications in astronomy. Its single-channel observation bandwidth is relatively low. The largest single-channel bandwidth currently used is 64 MHz, but it has more channels, and the most common one is 16 channels, which cannot observe higher and wider frequencies. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present disclosure provides a radio astronomy total power measurement device and a measurement method. The device has the advantages of low cost, wide observation bandwidth, high frequency, and flexible use.

[0005] A first aspect of the present disclosure provides a radio astronomy total power measurement device, comprising: two power detection probes, a programmable logic device and a controller; wherein the device includes a free trigger mode and an external trigger mode; the two power detection probes are used to collect power data of a dual-linear polarization signal or a circular polarization signal received by a radio astronomy receiver; the programmable logic device is used to generate a corresponding trigger signal according to a preset trigger mode in the external trigger mode to drive the two power detection probes to collect power data, and generate an interrupt signal after the two power detection probes complete data collection; the controller is used to electrically control the programmable logic device and the two power detection probes to send a first control signal in the free trigger mode to enable the two power detection probes to collect power data and obtain the power data; or, to obtain power data according to the interrupt signal in the external trigger mode.

[0006] Furthermore, the controller includes a first controller and a second controller, the first controller is connected to one of the two power detection probes through a switch, and the second controller is connected to the other of the two power detection probes through the switch.

[0007] Furthermore, the controller adopts a master-slave mode, including: a first controller and a second controller, the first controller is connected to the two power detection probes through a switch, and the second controller is connected to the two power detection probes through the switch.

[0008] Furthermore, the preset trigger mode includes three trigger modes; wherein, when the preset trigger mode is the first trigger mode, the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal under the first excitation signal and the second excitation signal, so as to drive the two power detection probes to perform data acquisition and drive the receiver noise source to generate a noise source signal; when the preset trigger mode is the second trigger mode, the controller outputs a second control signal to the programmable logic device, so that the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal according to the second control signal, so as to drive the two power detection probes to perform data acquisition and drive the receiver noise source to generate a noise source signal; when the preset trigger mode is the third trigger mode, an external trigger signal is input to the programmable logic device through an external device, so that the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal, so as to drive the two power detection probes to perform data acquisition and drive the receiver noise source to generate a noise source signal.

[0009] Furthermore, in the first trigger mode and the third trigger mode, the power data collected by the two power detection probes include a timestamp.

[0010] Furthermore, the first excitation signal is a reference signal from a hydrogen atomic clock, and the second excitation signal is a 1PPS signal.

[0011] Furthermore, a signal period of the third trigger signal is different from signal periods of the first trigger signal and the second trigger signal.

[0012] Furthermore, the apparatus also includes: a terminal device, which is communicatively connected to the controller and is used to obtain power data stored in the controller.

[0013] Furthermore, the device also includes: a display, used to display the power data acquired by the controller.

[0014] The second aspect of the present disclosure provides a measurement method based on the radio astronomy total power measurement device shown in the first aspect, including: initiating a first controller signal to two power detection probes through a controller, so that the two power detection probes collect power data of dual-linear polarization signals or circular polarization signals received by the radio astronomy receiver according to the first control signal, and obtain the power data; or, selecting a corresponding trigger mode according to a preset trigger mode, so that the programmable logic device outputs a trigger signal according to an excitation signal or a second control signal output by the controller, so as to drive the two power detection probes to collect power data of the dual-linear polarization signals or circular polarization signals received by the radio astronomy receiver, and output the power data to the controller.

[0015] The present disclosure provides a radio astronomy total power measurement device and measurement method. The device is small in size and can be installed in the place closest to the radio astronomy receiver to avoid power fluctuations caused by long-distance signal transmission. It has the advantages of wide working bandwidth and high frequency, which can be specifically related to the working parameters of the power detection probe used. The working frequency range of the power detection probe in the device is 10MHz~6GHz, and the dynamic range is -60dBm~25dBm. It is well compatible with the existing receiver system, and can use different working modes for observation according to needs. The device is low-cost and can be used as a monitoring device for the receiver system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For a more complete understanding of the present disclosure and its advantages, reference will now be made to the following description taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 The structure diagram of a radio astronomy total power measurement device according to an embodiment of the present disclosure is schematically shown;

[0018] Figure 2 A schematic diagram of a signal timing in a first trigger mode according to an embodiment of the present disclosure is shown;

[0019] Figure 3 A schematic diagram of a signal timing in a second trigger mode according to an embodiment of the present disclosure is shown;

[0020] Figure 4 A schematic diagram of a signal timing in a third trigger mode according to an embodiment of the present disclosure is shown;

[0021] Figure 5 The flowchart of the method for measuring total radio astronomy power according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0023] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0024] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0025] The technical solution of the present disclosure will be described in detail below in conjunction with the structure of the radio astronomy total power measurement device in the specific embodiment of the present disclosure. It should be understood that Figure 1 to Figure 4 The shapes, structures and signals of the various parts in the structure of the radio astronomy total power measurement device shown in the figure are only exemplary to help those skilled in the art understand the technical solution of the present disclosure, and are not intended to limit the protection scope of the present disclosure.

[0026] Figure 1 The schematic diagram shows the structure of a radio astronomy total power measurement device according to an embodiment of the present disclosure.

[0027] like Figure 1 As shown, the radio astronomy total power measurement device 100 has a free trigger mode and an external trigger mode, and includes: a controller 10, a programmable logic device 20 and two power detection probes. The controller 10 is electrically connected to the programmable logic device 20, which is connected to the two power detection probes through a switch 40.

[0028] The two power detection probes are used to collect power data of dual-linear polarization signals or circular polarization signals received by the radio astronomy receiver according to the first control signal output by the controller 10 or the trigger signal output by the programmable logic device 20 .

[0029] The programmable logic device 20 is used to generate a corresponding trigger signal according to a preset trigger mode in an external trigger mode to drive two power detection probes to collect power data, and generate an interrupt signal after the two power detection probes complete data collection each time.

[0030] The controller 10 is used to electrically control the programmable logic device 20 and the two power detection probes to send a first control signal in a free trigger mode so that the two power detection probes collect power data and obtain the power data; or, in an external trigger mode, obtain the power data collected by the two power detection probes according to an interrupt signal.

[0031] In the embodiments of the present disclosure, Figure 1 As shown, the two power detection probes are specifically a first power detection probe 301 and a second power detection probe 302. The first power detection probe 301 and the second power detection probe 302 are respectively used to collect power data of dual-linear polarization signals or circular polarization signals received by a radio astronomy receiver.

[0032] Specifically, the dual-linear polarization signal includes a horizontal polarization signal and a vertical polarization signal, that is, the first power detection probe 301 can be used to collect power data of the horizontal polarization signal, and the second power detection probe 302 is used to collect power data of the vertical polarization signal; similarly, the reverse is also possible. The circularly polarized signal includes a left-handed polarization signal and a right-handed polarization signal, that is, the first power detection probe 301 can be used to collect power data of the left-handed polarization signal, and the second power detection probe 302 is used to collect power data of the right-handed polarization signal; similarly, the reverse is also possible. The embodiments of the present disclosure do not limit the signals corresponding to the first power detection probe 301 and the second power detection probe 302.

[0033] In the embodiment of the present disclosure, the operating frequency range of the first power detection probe 301 and the second power detection probe 302 is preferably 10 MHz to 6 GHz, and the dynamic range is -60 dBm to 25 dBm.

[0034] Specifically, the controller 10 specifically includes a first controller 101 (such as RASPI-1) and a second controller 102 (such as RASPI-2). Among them, the first controller 101 and the second controller 102 can control the first power detection probe 301 and the second power detection probe 302 respectively at the same time, or control the first power detection probe 301 or the second power detection probe 302 one by one. For example, when the controller 10 adopts the master-slave mode, the first controller 101 is connected to the first power detection probe 301 and the second power detection probe 302 through the switch 40, and the second controller 102 is connected to the first power detection probe 301 and the second power detection probe 302 through the switch 40. At this time, the second controller 102 can be used as a backup controller to avoid data loss when the main controller fails. When the controller 10 is in non-master-slave mode, the first controller 101 is connected to the first power detection probe 301 through the switch 40, and the second controller 102 is connected to the second power detection probe 302 through the switch 40, and the two power detection probes are controlled separately by the two controllers.

[0035] In the embodiments of the present disclosure, Figure 1 As shown, an I / O pin in the first controller 101 is connected to a pin in the programmable logic device 20 (CPLD) so that the first controller 101 receives an interrupt signal INT1 from the programmable logic device 20. An I / O pin in the second controller 102 is connected to another pin in the programmable logic device 20 so that the second controller 102 receives an interrupt signal INT2 from the programmable logic device 20. Another I / O pin in the first controller 101 and the second controller 102 is connected to a pin in the programmable logic device 20, so that the first controller 101 and the second controller 102 output a CTR / IO signal to control the enable state and working mode of the programmable logic device 20. The first power detection probe 301 is connected to the switch 40 through a network cable, and its trigger interface is connected to a pin of the programmable logic device 20 through a shielded cable TRIG1. The second power detection probe 302 is connected to the switch 40 through a network cable, and its trigger interface is connected to a pin of the programmable logic device 20 through a shielded cable TRIG2. The other pins of the programmable logic device 20 are respectively used to connect the first excitation signal (such as the reference signal from the hydrogen atomic clock), the second excitation signal (such as the 1PPS signal) and the external trigger signal (such as EXT_TRIG), wherein the external trigger signal EXT_TRIG) is used to generate the NS signal to control the receiver noise source 60.

[0036] In the embodiments of the present disclosure, Figure 1As shown, the device 100 also includes: a display VFD electrically connected to the controller 10, which is used to display the power data acquired by the controller 10. Specifically, when there are more power data collected in a cycle, the display VFD can only display one power data, for example, the first data in each cycle, or the power data corresponding to the middle time of the cycle, which is not limited in the present disclosure. Or, when there are less power data collected in a cycle, the display VFD can display all the data collected in the same cycle for monitoring.

[0037] According to an embodiment of the present disclosure, the working modes of the radio astronomy total power measurement device 100 specifically include a free trigger mode and an external trigger mode. The free trigger mode refers to directly controlling the first power detection probe 301 and the second power detection probe 302 through the controller 10, and the external trigger mode refers to controlling the enable state and working mode of the programmable logic device 20 through the controller, so that the programmable logic device 20 generates a trigger signal to drive the first power detection probe 301 and the second power detection probe 302 to work.

[0038] In an embodiment of the present disclosure, when the working mode of the radio astronomy total power measurement device 100 is a free trigger mode, the free trigger mode is suitable for a case where strict timing control is not required. The triggering process does not require a programmable logic device 20. The first controller 101 and / or the second controller 102 directly controls the first power detection probe 301 and the second power detection probe 302 through the router 40 to collect data, and obtains the power data collected by the first power detection probe 301 and the second power detection probe 302.

[0039] In the embodiment of the present disclosure, when the working mode of the radio astronomy total power measurement device 100 is the external trigger mode, the external trigger mode is a trigger mode preset in the device 100. The preset trigger modes are divided into three types, namely the first trigger mode, the second trigger mode and the third trigger mode.

[0040] Specifically, when the first trigger mode is selected by the first controller 101 and / or the second controller 102 to control the programmable logic device 20, the programmable logic device 20 generates a first trigger signal, a second trigger signal and a third trigger signal under the first excitation signal and the second excitation signal to drive the two power detection probes to collect data and drive the receiver noise source 60 to generate a noise source signal. Among them, the first excitation signal can be a 10Mhz reference signal from a hydrogen atomic clock, and the second excitation signal can be a 1PPS signal. Under the joint action of the 10Mhz reference signal and the 1PPS signal, the programmable logic device 20 generates three trigger signals, namely, a first trigger signal TRIG1, a second trigger signal TRIG2 and a third trigger signal NS. Specifically, the first trigger signal TRIG1 acts on the first power detection probe 301 to enable the first power detection probe 301 to collect data. The second trigger signal TRIG2 acts on the second power detection probe 302 to enable the second power detection probe 302 to collect data. At this time, the power data collected by the power detection probe has a timestamp to facilitate signal time analysis. The third trigger signal NS acts on the receiver noise source 60 to drive the receiver noise source 60 to generate a noise source signal.

[0041] In an embodiment of the present disclosure, a differential signal converter 50 is provided between the output end of the third trigger signal NS of the programmable logic device 20 and the receiver noise source 60 to convert the NS signal output by the programmable logic device 20 into a differential signal so as to drive the receiver noise source 60 to generate a noise source signal.

[0042] It should be noted that in some other embodiments, depending on the actual control method required by the receiver noise source, when the output is a TTL signal, the receiver noise source and the programmable logic device 20 can be connected via network communication or serial port communication, and is not limited to connection via a differential signal converter 50.

[0043] Specifically, when the second trigger mode is selected by the first controller 101 and / or the second controller 102 to control the programmable logic device 20, the first controller 101 and / or the second controller 102 outputs a second control signal to the programmable logic device 20, so that the programmable logic device 20 generates a first trigger signal TRIG1, a second trigger signal TRIG2 and a third trigger signal NS according to the second control signal, so as to drive the two power detection probes to collect data and drive the receiver noise source 60 to generate a noise source signal. The objects acted on by the first trigger signal TRIG1, the second trigger signal TRIG2 and the third trigger signal NS are shown in the above contents, and will not be described in detail here.

[0044] Specifically, when the third trigger mode is selected to control the programmable logic device 20 through the first controller 101 and / or the second controller 102, an external trigger signal EXT_TRIG is input to the programmable logic device 20 through other external devices, so that the programmable logic device 20 generates a first trigger signal TRIG1, a second trigger signal TRIG2 and a third trigger signal NS to drive the two power detection probes to collect data and drive the receiver noise source to generate a noise source signal. The objects acted on by the first trigger signal TRIG1, the second trigger signal TRIG2 and the third trigger signal NS are shown in the above content, and will not be described in detail here.

[0045] In the embodiment of the present disclosure, when the first trigger mode is selected as the trigger mode of the programmable logic device 20, there are multiple trigger cycle options in this mode. For example, the multiple trigger cycles can be, for example, 5 trigger cycles, such as 10ms, 20ms, 50ms, 100ms and 200ms. The trigger cycle represents the time interval of the first trigger signal TRIG1 and the second trigger signal TRIG2 that control the two power detection probes. When the trigger signal rises and arrives, data collection begins and the conversion is completed within the set time. The third trigger signal NS cycle is twice the trigger signal. For example, if the trigger signal cycle is 10ms, the third trigger signal NS cycle is 20ms. Among them, one data collection is completed in the first half cycle of the third trigger signal NS, and another collection is completed in the second half cycle. The interrupt signals INT1 and INT2 are related to the device configuration. When the power detection probe completes the set number of collections, the programmable logic device 20 generates an interrupt signal. The interrupt signal is used to inform the controller 10 to read the power data in the power detection probe. The timing relationships of several signals in the first trigger mode are as follows: Figure 2 Specifically, the 10MHz reference signal from the hydrogen atomic clock is shaped into a standard square wave after passing through a high-speed comparator and enters the programmable logic device 20, as shown in FIG. Figure 2 10MHz square wave shown.

[0046] Before using the device, the programmable logic device 20 is configured to work in the first trigger mode through the CTR / IO pin. After the measurement is started, the programmable logic device 20 starts counting according to the previous configuration when the first 1PPS signal rising edge is detected. For example, if the configured data sampling interval is 10ms, then T1=10ms, which is the signal that triggers the power probe. Correspondingly, T2=20ms, which is the signal that controls the receiver noise source. When the power detection probe detects the rising edge of the trigger signal, it starts to convert the received power signal, which must be completed within T1 time. When the receiver noise source detects a high level, the noise source is turned on and the noise source signal is injected into the receiver. During this time, the signal received by the power detection probe includes the injected noise source signal, that is, the power data collected by the power detection probe is the power sum of the dual-linear polarization signal or circular polarization signal and the noise source signal. When the rising edge of the second trigger signal arrives, the power detection probe starts to convert again. At this time, the NS signal has become a low level, and the receiver noise source is turned off. At this time, the signal received by the power detection probe does not include the noise source signal, and the cycle continues. When the number of collected data reaches the set number, the interrupt signal INT1 and / or interrupt signal INT2 is triggered. When the controller receives the rising edge of the interrupt signal, the data stored in the power detection probe is read. The number of data read can be expressed as

[0047] In the embodiment of the present disclosure, when the second trigger mode is selected as the trigger mode of the programmable logic device 20, the CTR / IO signal is generated by the first controller 101 and / or the second controller 102 in the controller 10, and the signal directly acts on the programmable logic device 20 to output the trigger signal TRIG1 and the trigger signal TRIG2, and the NS signal is output through the internal frequency division of the programmable logic device 20, and the frequency is half of the external trigger signal EXT_TRIG. When the set storage number is met, the counting is completed by the controller 10, and the programmable logic device 20 generates an interrupt signal to inform the controller 10 to read the data. The timing in this mode is as follows Figure 3 shown.

[0048] In the embodiment of the present disclosure, when the third trigger mode is selected as the trigger mode of the programmable logic device 20, an EXT_TRIG signal is generated by an external device and input to the programmable logic device 20, so that the programmable logic device 20 outputs the trigger signal TRIG1 and the trigger signal TRIG2, and the NS signal is output by the internal frequency division of the programmable logic device 20, and the frequency is half of the external trigger signal EXT_TRIG. When the set storage number is met, the counting is completed by the controller 10, and the programmable logic device 20 generates an interrupt signal to inform the controller 10 to read the data. The timing in this mode is as follows Figure 4In the third trigger mode, the power data collected by the power detection probe has a timestamp to facilitate signal time analysis.

[0049] According to the embodiments of the present disclosure, Figure 1 As shown, the radio astronomy total power measurement device 100 also includes: a terminal device 70. The terminal device 70 is connected to the controller 10 for communication, and is used to obtain power data stored in the controller and display the data. Specifically, the terminal device 70 can be a client with display and communication functions, such as a desktop, a notebook, a host computer, etc. The communication connection method can be a wireless communication connection, etc. The embodiments of the present disclosure do not limit the terminal device 70 and the communication method.

[0050] Another aspect of the present disclosure further provides a measurement method based on the radio astronomy total power measurement device shown in the above embodiment. The measurement method is based on Figure 1 The device 100 shown is implemented, specifically including the following steps: initiating a first controller signal to two power detection probes through a controller, so that the two power detection probes collect power data of dual-linear polarization signals or circular polarization signals received by a radio astronomy receiver according to the first control signal, and obtain the power data; or, selecting a corresponding trigger mode according to a preset trigger mode, so that the programmable logic device outputs a trigger signal according to an excitation signal or a second control signal output by the controller, so as to drive the two power detection probes to collect power data of dual-linear polarization signals or circular polarization signals received by the radio astronomy receiver, and output the power data to the controller.

[0051] like Figure 5 As shown, according to the specific trigger mode and the working frequency range, the working parameters of the first power detection probe 301 and the second power detection probe 302 are configured, and then the controller 10 is used to determine whether the working mode of the radio astronomy total power measurement device 100 belongs to the free trigger mode or the external trigger mode. If it is the free trigger mode, the controller 10 initiates a first controller signal to the two power detection probes, so that the two power detection probes collect the power data of the dual-linear polarization signal or the circular polarization signal received by the radio astronomy receiver according to the first control signal, and the controller 10 directly obtains the power data. If it is the external trigger mode, the controller 10 selects the trigger mode of the programmable logic device 20, and the trigger mode of the programmable logic device 20 specifically includes the first trigger mode, the second trigger mode and the third trigger mode. According to the selected first trigger mode, the second trigger mode or the third trigger mode, the programmable logic device 20 is triggered to generate a corresponding trigger signal, and finally the two power detection probes are driven to collect and output data.

[0052] It should be noted that the specific triggering process of the first trigger mode, the second trigger mode and the third trigger mode in this embodiment is as shown in the above embodiment and will not be described in detail here.

[0053] The embodiments of the present disclosure provide a radio astronomy total power measurement device and method. The device is small in size and suitable for installation at a location close to a radio astronomy receiver, avoiding power fluctuations caused by long-distance signal transmission. It has the advantages of a wide working bandwidth and a high frequency. The specific requirements of the device depend on the selected power detection probe. The power detection probe of the embodiments of the present disclosure has an operating frequency range of 10MHz to 6GHz and a dynamic range of -60dBm to 25dBm. In addition, the device can be well compatible with existing receiver systems, and can be used in various modes for observation according to requirements. Due to its low manufacturing cost, it can be used as a monitoring device for the receiver system.

[0054] While the disclosure has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive.

[0055] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of scopes, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of scopes without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0056] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A radio astronomy total power measurement device, characterized in that: include: Two power detection probes, a programmable logic device and a controller; wherein the device includes a free trigger mode and an external trigger mode; The two power detection probes are used to collect power data of dual-linear polarization signals or circular polarization signals received by the radio astronomy receiver; The programmable logic device is used to generate a corresponding trigger signal according to a preset trigger mode in the external trigger mode to drive the two power detection probes to collect the power data, and generate an interrupt signal after the two power detection probes complete data collection; The controller is used to electrically control the programmable logic device and the two power detection probes, so as to send a first control signal in the free trigger mode so that the two power detection probes collect the power data and obtain the power data; or, in the external trigger mode, obtain the power data according to the interrupt signal; The preset trigger mode includes three trigger modes; among which, When the preset trigger mode is the first trigger mode, the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal under the first excitation signal and the second excitation signal to drive the two power detection probes to collect data and drive the receiver noise source to generate a noise source signal; When the preset trigger mode is the second trigger mode, the controller outputs a second control signal to the programmable logic device, so that the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal according to the second control signal, so as to drive the two power detection probes to collect data and drive the receiver noise source to generate a noise source signal; When the preset trigger mode is the third trigger mode, an external trigger signal is input to the programmable logic device through an external device, so that the programmable logic device generates a first trigger signal, a second trigger signal and a third trigger signal to drive the two power detection probes to collect data and drive the receiver noise source to generate a noise source signal.

2. The radio astronomy total power measurement device according to claim 1, characterized in that: The controller includes a first controller and a second controller, the first controller is connected to one of the two power detection probes through a switch, and the second controller is connected to the other of the two power detection probes through the switch.

3. The radio astronomy total power measurement device according to claim 1, characterized in that: The controller adopts a master-slave mode, and includes: a first controller and a second controller, wherein the first controller is connected to the two power detection probes via a switch, and the second controller is connected to the two power detection probes via a switch.

4. The radio astronomy total power measurement device according to claim 1, characterized in that: In the first trigger mode and the third trigger mode, the power data collected by the two power detection probes include a timestamp.

5. The radio astronomy total power measurement device according to claim 1, characterized in that: The first excitation signal is a reference signal from a hydrogen atomic clock, and the second excitation signal is a 1PPS signal.

6. The radio astronomy total power measurement device according to claim 1, characterized in that: A signal period of the third trigger signal is different from signal periods of the first trigger signal and the second trigger signal.

7. The radio astronomy total power measurement device according to claim 1, characterized in that: The device also includes: The terminal device is connected to the controller for communication and is used to obtain power data stored in the controller.

8. The radio astronomy total power measurement device according to claim 1, characterized in that: The device also includes: A display is used to display the power data acquired by the controller.

9. A measurement method based on the radio astronomy total power measurement device according to any one of claims 1 to 8, characterized in that: include: Initiating a first controller signal to the two power detection probes through the controller, so that the two power detection probes collect power data of the dual-linear polarization signal or circular polarization signal received by the radio astronomy receiver according to the first control signal, and obtain the power data; or, A corresponding trigger mode is selected according to a preset trigger mode, so that the programmable logic device outputs a trigger signal according to an excitation signal or a second control signal output by the controller, so as to drive the two power detection probes to collect power data of the dual-linear polarization signal or the circular polarization signal received by the radio astronomy receiver, and output the power data to the controller.

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