CN112415483A - Automatic measuring method for power of secondary monitoring radar transmitter - Google Patents
Automatic measuring method for power of secondary monitoring radar transmitter Download PDFInfo
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- CN112415483A CN112415483A CN202011163924.5A CN202011163924A CN112415483A CN 112415483 A CN112415483 A CN 112415483A CN 202011163924 A CN202011163924 A CN 202011163924A CN 112415483 A CN112415483 A CN 112415483A
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- analog detection
- transmitter
- detection signal
- power
- amplitude value
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Abstract
The invention discloses an automatic measuring method for power of a secondary monitoring radar transmitter, which comprises the following steps: s1: when a transmitter of the secondary monitoring radar transmits signals, converting the power of the transmitter into analog detection signals through a detector; s2: carrying out real-time A/D sampling on the analog detection signal to obtain an amplitude value of the analog detection signal; s3: and calculating to obtain the actual power when the transmitter transmits the signal according to the amplitude value of the analog detection signal. The invention can avoid using expensive test equipment, and does not influence the normal work and use of the secondary monitoring radar during measurement.
Description
Technical Field
The invention relates to the technical field of secondary radar, in particular to an automatic measuring method for power of a secondary monitoring radar transmitter.
Background
Under the environment of the current rapid development of civil aviation industry, the secondary monitoring radar plays an indispensable role in airspace monitoring and flight safety guarantee as an important device for air traffic control. Therefore, the secondary surveillance radar must have high reliability and stability, and in order to grasp the device state of the secondary surveillance radar in real time, it is necessary to monitor important performance indexes such as transmitter power of the secondary surveillance radar.
In the prior art, the transmitter power of the secondary monitoring radar can be measured only by expensive equipment such as a peak power meter, the measurement cost is very high, the secondary monitoring radar is required to be suspended for use during measurement, but many secondary monitoring radars are all-weather and all-day-long uninterrupted, and cannot be suspended for use for measurement, so the measurement is very inconvenient.
Disclosure of Invention
The invention aims to provide an automatic measuring method for the power of a transmitter of a secondary surveillance radar, which can avoid using expensive test equipment and simultaneously does not influence the normal work and use of the secondary surveillance radar during measurement.
In order to solve the technical problems, the invention adopts a technical scheme that: providing an automatic measuring method of the power of a secondary surveillance radar transmitter, S1: when a transmitter of the secondary monitoring radar transmits signals, converting the power of the transmitter into analog detection signals through a detector;
s2: carrying out real-time A/D sampling on the analog detection signal to obtain an amplitude value of the analog detection signal;
s3: and calculating to obtain the actual power when the transmitter transmits the signal according to the amplitude value of the analog detection signal, wherein the calculation formula of the actual power is as follows:
p represents the actual power, M represents the amplitude value of the analog detection signal, and C is a constant related to the detector model.
Preferably, the step S1 specifically includes:
s11: determining the type of the detector according to the transmitter power range of the secondary monitoring radar;
s12: when the transmitter of the secondary monitoring radar transmits signals, the detector is driven to output analog detection signals.
Preferably, the step S2 specifically includes:
s21: dividing the voltage of the analog detection signal to make the amplitude value in a preset A/D conversion range;
s22: quantizing the analog detection signal after voltage division through an A/D conversion circuit, and converting the analog detection signal into an 8-bit A/D quantized value;
s23: and sampling the 8-bit A/D quantized value through an A/D sampling circuit, and dividing by the voltage division coefficient to obtain an amplitude value of the analog detection signal.
Preferably, the step S3 further includes:
and displaying the actual power of the transmitter when transmitting the signal on the display control interface.
Preferably, the a/D sampling circuit is an FPGA circuit.
Preferably, the a/D sampling circuit is a CPU circuit. .
Different from the prior art, the invention has the beneficial effects that: compared with the traditional measuring method which needs expensive test equipment and needs to interrupt the normal work and use of the secondary monitoring radar, the method does not need to use the expensive test equipment, does not influence the normal work and use of the secondary monitoring radar during measurement, can be carried out in real time, and is very simple and convenient.
Drawings
Fig. 1 is a schematic flow chart of an automatic power measurement method for a secondary surveillance radar transmitter according to an embodiment of the present invention.
Fig. 2 is a detailed flowchart of step S1.
Fig. 3 is a detailed flowchart of step S2.
Fig. 4 is a circuit schematic of a detector.
Fig. 5 is a circuit schematic of the a/D conversion circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the automatic measuring method of the secondary surveillance radar transmitter power of the embodiment of the present invention includes the steps of:
s1: when a transmitter of the secondary surveillance radar transmits a signal, the transmitter power is converted into an analog detection signal by a detector.
S2: and carrying out real-time A/D sampling on the analog detection signal to obtain an amplitude value of the analog detection signal.
S3: and calculating to obtain the actual power when the transmitter transmits the signal according to the amplitude value of the analog detection signal, wherein the calculation formula of the actual power is as follows:
p represents the actual power, M represents the amplitude value of the analog detection signal, C is a constant related to the detector model, and C takes the value of 20 in some cases and 10 in some cases, and is determined by the detector model.
In this embodiment, step S1 specifically includes:
s11: determining the type of the detector according to the transmitter power range of the secondary monitoring radar;
s12: when the transmitter of the secondary monitoring radar transmits signals, the detector is driven to output analog detection signals.
Step S2 specifically includes:
s21: dividing the voltage of the analog detection signal to make the amplitude value in the preset A/D conversion range;
s22: quantizing the analog detection signal after voltage division through an A/D conversion circuit, and converting the analog detection signal into an 8-bit A/D quantized value;
s23: and sampling the 8-bit A/D quantized value through an A/D sampling circuit, and dividing by the voltage division coefficient to obtain an amplitude value of the analog detection signal.
The A/D sampling circuit can be an FPGA circuit or a CPU circuit.
In order to observe the change of the actual power in real time, in this embodiment, step S3 further includes:
and displaying the actual power of the transmitter when transmitting the signal on the display control interface.
In one practical application, the detector used in the present invention is shown in FIG. 4, and the A/D conversion circuit is shown in FIG. 5. In fig. 4, D5 is a model AD8313 logarithmic detector of ideno semiconductor technology, inc, and D6 is a model AD8031 low power amplifier of ideno semiconductor technology, inc. In fig. 5, D7 is an FPGA chip.
Through the mode, the automatic measuring method for the transmitter power of the secondary monitoring radar correlates the transmitter power of the secondary monitoring radar with the amplitude value of the analog detection signal, has a functional relation between the transmitter power of the secondary monitoring radar and the amplitude value of the analog detection signal, can obtain the actual power of the transmitter of the secondary monitoring radar through calculation, and is very convenient to measure.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (6)
1. A method for automatically measuring the power of a secondary surveillance radar transmitter, comprising the steps of:
s1: when a transmitter of the secondary monitoring radar transmits signals, converting the power of the transmitter into analog detection signals through a detector;
s2: carrying out real-time A/D sampling on the analog detection signal to obtain an amplitude value of the analog detection signal;
s3: and calculating to obtain the actual power when the transmitter transmits the signal according to the amplitude value of the analog detection signal, wherein the calculation formula of the actual power is as follows:
p represents the actual power, M represents the amplitude value of the analog detection signal, and C is a constant related to the detector model.
2. The automatic measuring method according to claim 1, wherein the step S1 specifically comprises:
s11: determining the type of the detector according to the transmitter power range of the secondary monitoring radar;
s12: when the transmitter of the secondary monitoring radar transmits signals, the detector is driven to output analog detection signals.
3. The automatic measuring method according to claim 2, wherein the step S2 specifically comprises:
s21: dividing the voltage of the analog detection signal to make the amplitude value in a preset A/D conversion range;
s22: quantizing the analog detection signal after voltage division through an A/D conversion circuit, and converting the analog detection signal into an 8-bit A/D quantized value;
s23: and sampling the 8-bit A/D quantized value through an A/D sampling circuit, and dividing by the voltage division coefficient to obtain an amplitude value of the analog detection signal.
4. The automatic measuring method according to claim 3, wherein the step S3 further includes:
and displaying the actual power of the transmitter when transmitting the signal on the display control interface.
5. The automated measurement method of claim 3, wherein the A/D sampling circuit is an FPGA circuit.
6. The automated measurement method of claim 3, wherein the A/D sampling circuit is a CPU circuit.
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| CN202011163924.5A CN112415483B (en) | 2020-10-27 | 2020-10-27 | Automatic measuring method for power of secondary monitoring radar transmitter |
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