CN104237892A - Atmospheric temperature sounding system and method of wind profiling radar - Google Patents

Atmospheric temperature sounding system and method of wind profiling radar Download PDF

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Publication number
CN104237892A
CN104237892A CN201410475319.XA CN201410475319A CN104237892A CN 104237892 A CN104237892 A CN 104237892A CN 201410475319 A CN201410475319 A CN 201410475319A CN 104237892 A CN104237892 A CN 104237892A
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temperature
data
signal
shared drive
industrial computer
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CN104237892B (en
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任迎新
贾晓星
王志锐
高雪峰
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Aerospace new weather Technology Co., Ltd
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Beijing Institute of Radio Measurement
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S15/00Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88Sonar systems specially adapted for specific applications
    • G01S15/885Meteorological systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/22Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
    • G01K11/24Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of the velocity of propagation of sound

Abstract

The invention relates to an atmospheric temperature sounding system and method of a wind profiling radar. The atmospheric temperature sounding system comprises an industrial personal computer, a data processing module, a system control module, an audio signal generator, a digital intermediate-frequency receiver board and a signal processing module. The data processing module is used for calculating audio parameters; the system control module is used for controlling the temperature sounding process; the digital intermediate-frequency receiver board is used for receiving echo signals of the radar; the signal processing module is used for processing the temperature sounding signals; the data processing module is used for processing thermogram data. The velocities of propagation of sound waves in air at different heights are sounded through the wind profiling radar, processing is performed through a mathematical model of the corresponding relation between the propagation velocity and the atmospheric temperature, and thus values of the atmospheric temperature changing along with height can be obtained. According to the method, sounding balloons do not need to be launched, continuous sounding can be performed, data are acquired in real time and are accurate, the data rate is high, and the atmospheric temperature sounding system and method of the wind profiling radar can be used for the fields of meteorological observation, air pollution monitoring, meteorological support for airports and the like.

Description

A kind of wind profile radar atmospheric temperature detecting system and method
Technical field
The present invention relates to atmospheric temperature detecting field, particularly relate to a kind of wind profile radar atmospheric temperature detecting system and method.
Background technology
In meteorological observation, atmospheric sounding temperature is indispensable project, and original atmospheric temperature detecting method realizes by discharging sounding balloon.In the meteorological station conversational traffic of China, every day, a sounding balloon was discharged in each timing sooner or later, carried out the collection of the air meteorological elements such as wind speed, wind direction, temperature, humidity, air pressure.This method can only obtain two groups of weather datas general every day, data acquisition rate is very low, detection data is lacked for every day atmospheric temperature continually varying situation need be monitored, the research of atmospheric temperature change aspect cannot be carried out well, as the research to atmospheric boundary layer inversion layer phenomenon Changing Pattern, the needs of the various application such as meteorological support, environmental monitoring and research fully can not be met.
Summary of the invention
Technical matters to be solved by this invention is for the deficiencies in the prior art, a kind of wind profile radar atmospheric temperature detecting system and method is provided, solves in the current method by discharging sounding balloon atmospheric sounding temperature and there is the problem that measuring intervals of TIME is long, temperature data is few, automaticity is low.
Wind profile radar (Wind Profiling Radar, WPR) be a kind of Doppler pulse radar, it is the round-the-clock atmospheric remote sensing detecting devices of one by atmospheric sounding turbulent flow, electromagnetic reflection and scattering being carried out to the physical quantitys such as continuous probe atmospheric wind, there is very high detection real-time and precision, be one of key equipment of Small and Medium Sized atmospheric exploration, be developed rapidly in China and apply.
The present invention utilizes radio acoustic sounding system RAS S (Radio-Acoustic Sounding System) system to carry out atmospheric temperature detecting.Because the velocity of sound and atmospheric temperature have good corresponding relation, the doppler velocity of wind profile radar sound detecting can be utilized to obtain atmosphere temperature profile.By the velocity of propagation of wind profile radar detection sound wave in differing heights air, utilize the mathematical model of corresponding relation between the velocity of sound and atmospheric temperature to process, thus obtain the value of atmospheric temperature with height change.This method need not discharge sounding balloon, can continuous probe, obtains data in real time, and data are accurate, and data transfer rate is high, can be used for multiple fields such as meteorological observation, air monitoring, aerodrome guarantee.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of wind profile radar atmospheric temperature detecting system, comprises industrial computer, data processing module, system control module, audio signal generator, digital if receiver plate and signal processing module; Described industrial computer is connected with data processing module, system control module, signal processing module and digital if receiver plate respectively by pci bus, is connected with audio signal generator by serial communication interface;
Described industrial computer, the radar echo signal of storing temperature investigative range, collection in its shared drive, treated time domain data and temperature data result, load access for data processing module, system control module and signal processing module;
Described data processing module, the scope of temperature sensing first stored in industrial computer shared drive is converted to audio frequency range for the instruction according to system control module by it, also carry out spectral moment and signal to noise ratio (S/N ratio) process for the warm modal data be stored into signal processing module in shared drive, obtain the temperature on each height layer, be saved in shared drive;
Described system control module, it, for controlling and data dispatching processing module, audio signal generator, digital if receiver plate and signal processing module, performs temperature sensing flow process;
Described audio signal generator, it produces sound signal under the driving of audio frequency that exports at industrial computer, and sends acoustic signals through Acoustic antenna;
Described digital if receiver plate, it is for gathering radar echo signal, and radar echo signal is carried out digitized processing obtains time domain data, time domain data is sent to the shared drive of industrial computer;
Described signal processing module, it generates warm modal data and is saved in the shared drive of industrial computer for carrying out signal transacting to the time domain data in industrial computer shared drive, for data processing module process.
The invention has the beneficial effects as follows: the present invention, by the velocity of propagation of wind profile radar detection sound wave in differing heights air, utilizes the mathematical model of corresponding relation between the velocity of sound and atmospheric temperature to process, thus obtains the value of atmospheric temperature with height change.This method need not discharge sounding balloon, can continuous probe, obtains data in real time, and data are accurate, and data transfer rate is high, can be used for multiple fields such as meteorological observation, air monitoring, aerodrome guarantee.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described data processing module comprises audio treatment unit, single group temperature data processing unit and temperature data processing unit;
Described audio treatment unit, it is for obtaining the value range of temperature sensing first preserved in industrial computer shared drive, temperature sensing scope is converted to the scope of corresponding audio frequency, audio frequency is carried out discrete processes, is stored in the shared drive of industrial computer;
Described single group temperature data processing unit, it is for the process often organizing temperature data and carry out spectral moment and signal to noise ratio (S/N ratio) parameter, the audio frequency on each height layer is extracted according to signal to noise ratio (S/N ratio) size, audio frequency is scaled the velocity of sound, and then the velocity of sound is scaled atmospheric temperature data, be sent in the shared drive of industrial computer;
Described temperature data processing unit, it is for being averaging processing the temperature data of predetermined group of number, calculate the medial temperature on each height layer, as measured temperature once, the maximum temperature that measured temperature in the minimum altitude measure this detected as next time, calculate the minimum temperature of detection next time according to temperature range, maximum temperature and minimum temperature are kept in industrial computer shared drive, as the temperature range of detection next time.
Further, described system control module comprises sound wave sending controling unit, echo reception control module, collecting quantity monitoring unit, signal processing control unit and data processing control units;
Described acoustic emission control module, it is for sending to audio signal generator by serial communication interface by the audio frequency in industrial computer shared drive, control audio signal generator and produce sound signal, and carry out amplification process, and then in air, send acoustical signal through Acoustic antenna;
Described echo reception control module, it carries out initialization for control figure intermediate-frequency receiver plate and parameter loads, and then receiving radar echo;
Described collecting quantity monitoring unit, its time domain data value of radar echo signal for importing in real-time listening industrial computer shared drive, when reaching predetermined value, control figure intermediate-frequency receiver stops receiving radar echoed signal;
Described signal processing control unit, it obtains the time domain data through digitized processing for control signal processing module from the shared drive of industrial computer, carries out signal transacting, generate warm modal data and be saved in the shared drive of industrial computer the time domain data obtained;
Described data processing control units, it obtains warm modal data for control data processing module and carries out data processing from industrial computer shared drive, is saved in the shared drive of industrial computer by the temperature data obtained.
Further, described digital if receiver plate carries out A/D conversion and collection according to loading parameters to the intermediate-freuqncy signal of radar return, by the time domain data of collection stored in local FIFO buffer memory, then is transferred in the shared drive of industrial computer by pci bus.
Another technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of wind profile radar atmospheric temperature detecting method, comprises the steps:
Step 1, is converted to audio frequency range by the scope of temperature sensing first stored in industrial computer shared drive, continuous print audio frequency is carried out discrete processes, obtains the audio frequency that several are discrete;
Step 2, sends to audio signal generator by discrete audio frequency, drives audio signal generator to produce sound signal, sends acoustic signals through Acoustic antenna;
Step 3, waits for the schedule time, starts receiving radar echoed signal, count while receiving, stop counting when reaching predetermined value, digitized processing is carried out to the radar echo signal received and obtains time domain data, time domain data is sent in the shared drive of industrial computer and stores;
Step 4, carries out signal transacting to the time domain data in industrial computer shared drive, generates warm modal data and is saved in the shared drive of industrial computer;
Step 5, carries out spectral moment and signal to noise ratio (S/N ratio) process to the warm modal data in industrial computer shared drive, obtains the temperature on each height layer, be saved in shared drive, and show;
Step 6, judges whether the data group number that this temperature sensing obtains reaches predetermined value L, if perform step 7, otherwise returns step 1;
Step 7, calculates the medial temperature on each height layer, obtains the temperature data of this temperature sensing according to surveyed L group temperature data.
On the basis of technique scheme, the present invention can also do following improvement.
Further, also comprise the maximum temperature value of the temperature sensing scope detected as next time by the temperature averages on the minimum altitude layer of temperature sensing data, lowest temperature angle value is calculated according to temperature-measuring range, the lowest temperature angle value of investigative range and maximum temperature value are stored in the shared drive of industrial computer, as the temperature sensing scope of next temperature sensing.
Further, being implemented as of step 1:
Step 11, according to the corresponding relation between the velocity of sound with atmospheric temperature, temperature sensing scope is first converted to corresponding velocity of sound scope, conversion relational expression is as follows,
v a = T v × 20.053
Wherein, T vatmospheric temperature, unit K, v athe velocity of sound, unit m/s;
Step 12, velocity of sound scope is converted to corresponding audio frequency range, transformational relation is as follows,
f a = v a / ( 1 2 λ e )
Wherein, f aaudio frequency, unit Hz, v athe velocity of sound, unit m/s, λ eradar wavelength, unit m;
Step 13, carries out discrete by audio frequency range according to predetermined stepping, obtains the audio frequency that several are discrete, is stored in the shared drive of industrial computer by discrete audio frequency.
Further, being implemented as of step 3: digital if receiver plate carries out initialization and parameter loads, digital if receiver plate carries out A/D conversion and collection according to loading parameters to the intermediate-freuqncy signal of radar return, by the time domain data of collection stored in local FIFO buffer memory, then be transferred in the shared drive of industrial computer by pci bus.
Further, being implemented as of step 4: system control module is the memory address in shared drive to signal processing module transmission processing parameter and time domain data, signal processing module utilizes signal processing parameter to carry out signal transacting to the time domain data in shared drive, and process generates warm modal data and is saved in shared drive.
Further, the specific implementation of step 5: the process warm modal data in industrial computer shared drive being carried out to spectral moment, signal to noise ratio (S/N ratio) parameter, the Doppler frequency of the sound echo signal on each height layer is extracted according to signal to noise ratio (S/N ratio) size, Doppler frequency is scaled doppler velocity, doppler velocity is converted to corresponding atmospheric temperature, at the temperature data that local display shows warm modal data figure and processes out.
Accompanying drawing explanation
Fig. 1 is a kind of wind profile radar atmospheric temperature detecting system chart of the present invention;
Fig. 2 is data processing module structured flowchart of the present invention;
Fig. 3 is system control module structured flowchart of the present invention;
Fig. 4 is a kind of wind profile radar atmospheric temperature detecting method flow diagram of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, industrial computer, 2, data processing module, 3, system control module, 4, audio signal generator, 5, digital if receiver plate, 6, signal processing module, 21, audio treatment unit, 22, single group temperature data processing unit, 22, temperature data processing unit, 31, sound wave sending controling unit, 32, echo reception control module, 33, collecting quantity monitoring unit, 34, signal processing control unit, 35, data processing unit.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of wind profile radar atmospheric temperature detecting system, comprises industrial computer 1, data processing module 2, system control module 3, audio signal generator 4, digital if receiver plate 5 and signal processing module 6; Described industrial computer 1 is connected with data processing module 2, system control module 3, signal processing module 4 and digital if receiver plate 5 respectively by pci bus, is connected with audio signal generator 6 by serial communication interface; Data processing module 2, system control module 3 and signal processing module 4 are loaded in the shared drive of industrial computer 1 when running.
Described industrial computer 1, the radar echo signal of storing temperature investigative range, collection in its shared drive, treated time domain data and temperature data result, load access for data processing module 2, system control module 3 and signal processing module 6; Described data processing module 2, the scope of temperature sensing first stored in industrial computer shared drive is converted to audio frequency range for the instruction according to system control module by it, also carry out spectral moment and signal to noise ratio (S/N ratio) process for the warm modal data be stored into signal processing module in shared drive, obtain the temperature on each height layer, be saved in shared drive; Described system control module 3, it, for controlling and data dispatching processing module 2, audio signal generator 4, digital if receiver plate 5 and signal processing module 6, performs temperature sensing flow process; Described audio signal generator 4, it produces sound signal under the driving of audio frequency that exports at industrial computer, and sends acoustic signals through Acoustic antenna; Described digital if receiver plate 5, it is for gathering radar echo signal, and radar echo signal is carried out digitized processing obtains time domain data, time domain data is sent to the shared drive of industrial computer; Described signal processing module 6, it generates warm modal data and is saved in the shared drive of industrial computer for carrying out signal transacting to the time domain data in industrial computer shared drive, for data processing module process.
As shown in Figure 2, described data processing module 2 comprises audio treatment unit 21, single group temperature data processing unit 22 and temperature data processing unit 23; Described audio treatment unit 21, it is for obtaining the value range of temperature sensing first preserved in industrial computer shared drive, temperature sensing scope is converted to the scope of corresponding audio frequency, audio frequency is carried out discrete processes, is stored in the shared drive of industrial computer; Described single group temperature data processing unit 22, it is for the process often organizing temperature data and carry out spectral moment and signal to noise ratio (S/N ratio) parameter, the audio frequency on each height layer is extracted according to signal to noise ratio (S/N ratio) size, audio frequency is scaled the velocity of sound, and then the velocity of sound is scaled atmospheric temperature data, be sent in the shared drive of industrial computer; Described temperature data processing unit 23, it is for being averaging processing the temperature data of predetermined group of number, calculate the medial temperature on each height layer, as measured temperature once, the maximum temperature that measured temperature in the minimum altitude measure this detected as next time, calculate the minimum temperature of detection next time according to temperature range, maximum temperature and minimum temperature are kept in industrial computer shared drive, as the temperature range of detection next time.
As shown in Figure 3, described system control module 3 comprises sound wave sending controling unit 31, echo reception control module 32, collecting quantity monitoring unit 33, signal processing control unit 34 and data processing unit 35; Described acoustic emission control module 31, it is for sending to audio signal generator 4 by serial communication interface by the audio frequency in industrial computer shared drive, control audio signal generator 4 and produce sound signal, and carry out amplification process, and then in air, send acoustical signal through Acoustic antenna; Described echo reception control module 32, it carries out initialization for control figure intermediate-frequency receiver plate 5 and parameter loads, and then receiving radar echo; Described collecting quantity monitoring unit 33, its time domain data value of radar echo signal for importing in real-time listening industrial computer shared drive, when reaching predetermined value, control figure intermediate-frequency receiver 5 stops receiving radar echoed signal; Described signal processing control unit 34, its for control signal processing module 6 from industrial computer 1 shared drive obtain time domain data through digitized processing, signal transacting is carried out to the time domain data obtained, generates warm modal data and be saved in the shared drive of industrial computer 1; Described data processing control units 35, it obtains warm modal data for control data processing module 2 and carries out data processing from the shared drive of industrial computer 1, is saved in by the temperature data obtained in the shared drive of industrial computer 1.
Analog signal transmission to digital if receiver, is made digitized processing by the receiver in wind profile radar; Described digital if receiver plate 5 carries out A/D conversion and collection according to loading parameters to the intermediate-freuqncy signal of radar return, by the time domain data of collection stored in local FIFO buffer memory, then is transferred in the shared drive of industrial computer by pci bus.
As shown in Figure 4, a kind of wind profile radar atmospheric temperature detecting method, comprises the steps:
Step 1, is converted to audio frequency range by the scope of temperature sensing first stored in industrial computer shared drive, continuous print audio frequency is carried out discrete processes, obtains the audio frequency that several are discrete;
Step 2, sends to audio signal generator by discrete audio frequency, drives audio signal generator to produce sound signal, sends acoustic signals through Acoustic antenna;
Step 3, waits for the schedule time, starts receiving radar echoed signal, count while receiving, stop counting when reaching predetermined value, digitized processing is carried out to the radar echo signal received and obtains time domain data, time domain data is sent in the shared drive of industrial computer and stores;
Step 4, carries out signal transacting to the time domain data in industrial computer shared drive, generates warm modal data and is saved in the shared drive of industrial computer;
Step 5, carries out spectral moment and signal to noise ratio (S/N ratio) process to the warm modal data in industrial computer shared drive, obtains the temperature on each height layer, be saved in shared drive, and show;
Step 6, judges whether the data group number that this temperature sensing obtains reaches predetermined value L, if perform step 7, otherwise returns step 1;
Step 7, calculates the medial temperature on each height layer, obtains the temperature data of this temperature sensing according to surveyed L group temperature data.
The scope of temperature sensing first stored in industrial computer shared drive is converted to audio frequency range by step 1, continuous print audio frequency is carried out discrete processes, obtains the audio frequency that several are discrete.
Corresponding relation between the velocity of sound and atmospheric temperature is as follows:
T v=(v a/20.053) 2 (1)
Wherein, T vatmospheric temperature, unit K; v athe velocity of sound, unit m/s.
Obtained by formula (1):
v a = T v × 20.053 - - - ( 2 )
According to the Bragg condition that those skilled in the art know, the process formula of audio frequency is:
f a = v a / ( 1 2 λ e ) - - - ( 3 )
Wherein, f aaudio frequency, unit Hz; v athe velocity of sound, unit m/s; λ eradar wavelength, unit m.
Formula (2) is substituted in formula (3) and obtains:
f a = 2 * 20.053 * T v / λ e - - - ( 4 )
If atmospheric temperature detecting scope is: T vb~ T ve, T vbthe minimum temperature of detection, T veit is the maximum temperature of detection; Corresponding audio frequency range is: f ab~ f ae, f abminimum audio frequency, f aemaximum audio frequency, wherein:
f ab = 2 * 20.053 * T vb / λ e - - - ( 5 )
f ae = 2 * 20.053 * T ve / λ e - - - ( 6 )
Process out f aband f aeafter, from f abto f aego out discrete audio frequency by 1Hz stepping process, total N number of audio frequency, the process formula of N is:
N=f ae-f ab+1 (7)
In order to reach better Effect on Detecting, random processing is carried out in the sequence of this N number of audio frequency, randomly ordered N number of audio frequency is saved in the shared drive of industrial computer.
Discrete audio frequency is sent to audio signal transmitter by step 2, drives sound signal to produce sound signal, sends acoustic signals through Acoustic antenna.
N number of audio frequency in shared drive is sent to audio signal generator 4 by serial communication interface by system control module 3, control audio signal generator 4 and produce sound signal, and the Acoustic antenna placed vertically upward is exported in amplification, Acoustic antenna is driven to send acoustic signals.And then system control module 3 pairs of digital if receiver plates 5 carry out initialization and parameter loads, and by the beam position vertical direction of rawin antenna; Propagate on maximum effective detection height, as on 3000m height to allow acoustic signals.
Step 3, waits for the schedule time, starts receiving radar echoed signal, count while receiving, stop counting when reaching predetermined value, by radar echo signal, digitized processing is carried out to reception and obtains time domain data, time domain data is sent in the shared drive of industrial computer and stores.
System control module 3 waits for 3s time delay, then starts the work schedule of thermometric, starts detection and the processing procedure of carrying out atmospheric temperature.Digital if receiver plate 5 is according to the sampling rate arranged in loading parameters, the extraction factor, filter factor, directly A/D conversion and collection are carried out to the intermediate-freuqncy signal of radar return, by first stored in the FIFO buffer memory in digital if receiver plate for the time domain data gathered, be transferred to by pci bus in the shared drive of work machine 1, received by system control module 3 and managed; System control module 3 limit receives time domain data limit and counts, and when count value reaches default numerical value M, M=FFT counts × time domain accumulation number × spectral average, stop the work schedule gathering echoed signal, system control module 3 completes time domain data and receives.
Step 4, carries out signal transacting to the time domain data in industrial computer shared drive, and the warm modal data of generation is also saved in the shared drive of industrial computer.
Data after system control module 3 and signal processing module 6 use shared drive to exchange to receive and process, system control module 3 call signal processing module 6, to the address of signal processing module 6 transmission signal process parameter and shared drive, signal processing parameter is utilized to carry out signal transacting to the time domain data in shared drive by signal processing module 6, after being disposed, the warm modal data generated is saved in shared drive, the flag information be disposed is returned to system control module 3, system control module 3 receives the memory address of warm modal data, and the warm modal data preservation mark work preset is judged, if be masked as 1, be saved on the hard disk of industrial control computer.If be 0, do not preserve warm modal data.
Step 5, carries out spectral moment and signal to noise ratio (S/N ratio) process to the warm modal data in industrial computer shared drive, obtains the temperature on each height layer, be saved in shared drive, and show.
System control module 3 calling data processing module 2 carries out the process of spectral moment, signal to noise ratio (S/N ratio) parameter to warm modal data, the Doppler frequency of the sound echo signal on each height layer is extracted according to signal to noise ratio (S/N ratio) size, i.e. audio frequency, be scaled doppler velocity, the i.e. velocity of sound, processes out atmospheric temperature corresponding to the velocity of sound with formula (1), and unit is K, be scaled the temperature value that unit is degree Celsius again, at the temperature data that local display shows warm modal data figure and processes out.
The process formula of the velocity of sound is:
v a=f aλ e/2 (8)
Wherein, v athe velocity of sound, unit m/s; f aaudio frequency, unit Hz; λ eradar wavelength, unit m.
Kelvin degree is converted to centigrade process formula:
T c=T v-273.15 (9)
T ccelsius temperature, unit DEG C.
Step 7, calculates the medial temperature on each height layer, obtains the temperature data of this temperature sensing according to surveyed L group temperature data.
This group temperature data is saved in shared drive by system control module 3.After enough L time of thermometric wheel number meter, system control module 3 calling data processing module 2 is averaging processing the L group temperature data preserved, and processes out the medial temperature on each height layer, as measured temperature this time.
The process formula of temperature-averaging is:
T ‾ c = ( Σ i = 0 L - 1 T ci ) / L - - - ( 10 )
Wherein, the centigrade mean value of L group, unit DEG C.
Technique scheme also comprises the maximum temperature value of the temperature sensing scope detected as next time by the temperature averages on the minimum altitude layer of temperature sensing data, lowest temperature angle value is calculated according to temperature-measuring range, the lowest temperature angle value of investigative range and maximum temperature value are stored in the shared drive of industrial computer, as the temperature sensing scope of next temperature sensing.
After completing L wheel temperature sensing, system control module 3 controls audio signal generator 6 and stops output audio signal, start and survey wind process, and monitor the system clock of industrial control computer, according to the thermometric interval time of presetting, on arriving once the thermometric time time, first stop surveying wind process, new thermometric process once from data processing module processing audio parameter place.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a wind profile radar atmospheric temperature detecting system, is characterized in that, comprises industrial computer, data processing module, system control module, audio signal generator, digital if receiver plate and signal processing module; Described industrial computer is connected with data processing module, system control module, signal processing module and digital if receiver plate respectively by pci bus, is connected with audio signal generator by serial communication interface;
Described industrial computer, the radar echo signal of storing temperature investigative range, collection in its shared drive, treated time domain data and temperature data result, load access for data processing module, system control module and signal processing module;
Described data processing module, the scope of temperature sensing first stored in industrial computer shared drive is converted to audio frequency range for the instruction according to system control module by it, also carry out spectral moment and signal to noise ratio (S/N ratio) process for the warm modal data be stored into signal processing module in shared drive, obtain the temperature on each height layer, be saved in shared drive;
Described system control module, it, for controlling and data dispatching processing module, audio signal generator, digital if receiver plate and signal processing module, performs temperature sensing flow process;
Described audio signal generator, it produces sound signal under the driving of audio frequency that exports at industrial computer, and sends acoustic signals through Acoustic antenna;
Described digital if receiver plate, it is for gathering radar echo signal, and radar echo signal is carried out digitized processing obtains time domain data, time domain data is sent to the shared drive of industrial computer;
Described signal processing module, it generates warm modal data and is saved in the shared drive of industrial computer for carrying out signal transacting to the time domain data in industrial computer shared drive, for data processing module process.
2. a kind of wind profile radar atmospheric temperature detecting system according to claim 1, is characterized in that, described data processing module comprises audio treatment unit, single group temperature data processing unit and temperature data processing unit;
Described audio treatment unit, it is for obtaining the value range of temperature sensing first preserved in industrial computer shared drive, temperature sensing scope is converted to the scope of corresponding audio frequency, audio frequency is carried out discrete processes, is stored in the shared drive of industrial computer;
Described single group temperature data processing unit, it is for the process often organizing temperature data and carry out spectral moment and signal to noise ratio (S/N ratio) parameter, the audio frequency on each height layer is extracted according to signal to noise ratio (S/N ratio) size, audio frequency is scaled the velocity of sound, and then the velocity of sound is scaled atmospheric temperature data, be sent in the shared drive of industrial computer;
Described temperature data processing unit, it is for being averaging processing the temperature data of predetermined group of number, calculate the medial temperature on each height layer, as measured temperature once, the maximum temperature that measured temperature in the minimum altitude measure this detected as next time, calculate the minimum temperature of detection next time according to temperature range, maximum temperature and minimum temperature are kept in industrial computer shared drive, as the temperature range of detection next time.
3. a kind of wind profile radar atmospheric temperature detecting system according to claim 1, it is characterized in that, described system control module comprises sound wave sending controling unit, echo reception control module, collecting quantity monitoring unit, signal processing control unit and data processing control units;
Described acoustic emission control module, it is for sending to audio signal generator by serial communication interface by the audio frequency in industrial computer shared drive, control audio signal generator and produce sound signal, and carry out amplification process, and then in air, send acoustical signal through Acoustic antenna;
Described echo reception control module, it carries out initialization for control figure intermediate-frequency receiver plate and parameter loads, and then receiving radar echo;
Described collecting quantity monitoring unit, its time domain data value of radar echo signal for importing in real-time listening industrial computer shared drive, when reaching predetermined value, control figure intermediate-frequency receiver stops receiving radar echoed signal;
Described signal processing control unit, it obtains the time domain data through digitized processing for control signal processing module from the shared drive of industrial computer, carries out signal transacting, generate warm modal data and be saved in the shared drive of industrial computer the time domain data obtained;
Described data processing control units, it obtains warm modal data for control data processing module and carries out data processing from industrial computer shared drive, is saved in the shared drive of industrial computer by the temperature data obtained.
4. a kind of wind profile radar atmospheric temperature detecting system according to claim 1, it is characterized in that, described digital if receiver plate carries out A/D conversion and collection according to loading parameters to the intermediate-freuqncy signal of radar return, by the time domain data of collection stored in local FIFO buffer memory, then be transferred in the shared drive of industrial computer by pci bus.
5. a wind profile radar atmospheric temperature detecting method, is characterized in that, comprises the steps:
Step 1, is converted to audio frequency range by the scope of temperature sensing first stored in industrial computer shared drive, continuous print audio frequency is carried out discrete processes, obtains the audio frequency that several are discrete;
Step 2, sends to audio signal generator by discrete audio frequency, drives audio signal generator to produce sound signal, sends acoustic signals through Acoustic antenna;
Step 3, waits for the schedule time, starts receiving radar echoed signal, count while receiving, stop counting when reaching predetermined value, digitized processing is carried out to the radar echo signal received and obtains time domain data, time domain data is sent in the shared drive of industrial computer and stores;
Step 4, carries out signal transacting to the time domain data in industrial computer shared drive, generates warm modal data and is saved in the shared drive of industrial computer;
Step 5, carries out spectral moment and signal to noise ratio (S/N ratio) process to the warm modal data in industrial computer shared drive, obtains the temperature on each height layer, be saved in shared drive, and show;
Step 6, judges whether the data group number that this temperature sensing obtains reaches predetermined value L, if perform step 7, otherwise returns step 1;
Step 7, calculates the medial temperature on each height layer, obtains the temperature data of this temperature sensing according to surveyed L group temperature data.
6. a kind of wind profile radar atmospheric temperature detecting method according to claim 5, it is characterized in that, also comprise the maximum temperature value of the temperature sensing scope detected as next time by the temperature averages on the minimum altitude layer of temperature sensing data, lowest temperature angle value is calculated according to temperature-measuring range, the lowest temperature angle value of investigative range and maximum temperature value are stored in the shared drive of industrial computer, as the temperature sensing scope of next temperature sensing.
7. a kind of wind profile radar atmospheric temperature detecting method according to claim 5, is characterized in that, being implemented as of step 1:
Step 11, according to the corresponding relation between the velocity of sound with atmospheric temperature, temperature sensing scope is first converted to corresponding velocity of sound scope, conversion relational expression is as follows,
v a = T v × 20.053
Wherein, T vatmospheric temperature, unit K, v athe velocity of sound, unit m/s;
Step 12, velocity of sound scope is converted to corresponding audio frequency range, transformational relation is as follows,
f a = v a / ( 1 2 λ e )
Wherein, f aaudio frequency, unit Hz, v athe velocity of sound, unit m/s, λ eradar wavelength, unit m;
Step 13, carries out discrete by audio frequency range according to predetermined stepping, obtains the audio frequency that several are discrete, is stored in the shared drive of industrial computer by discrete audio frequency.
8. a kind of wind profile radar atmospheric temperature detecting method according to claim 5, it is characterized in that, being implemented as of step 3: digital if receiver plate carries out initialization and parameter loads, digital if receiver plate carries out A/D conversion and collection according to loading parameters to the intermediate-freuqncy signal of radar return, by the time domain data of collection stored in local FIFO buffer memory, then be transferred in the shared drive of industrial computer by pci bus.
9. a kind of wind profile radar atmospheric temperature detecting method according to claim 5, it is characterized in that, being implemented as of step 4: system control module is the memory address in shared drive to signal processing module transmission processing parameter and time domain data, signal processing module utilizes signal processing parameter to carry out signal transacting to the time domain data in shared drive, and process generates warm modal data and is saved in shared drive.
10. a kind of wind profile radar atmospheric temperature detecting method according to claim 5, it is characterized in that, the specific implementation of step 5: the process warm modal data in industrial computer shared drive being carried out to spectral moment, signal to noise ratio (S/N ratio) parameter, the Doppler frequency of the sound echo signal on each height layer is extracted according to signal to noise ratio (S/N ratio) size, Doppler frequency is scaled doppler velocity, doppler velocity is converted to corresponding atmospheric temperature, at the temperature data that local display shows warm modal data figure and processes out.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444916A (en) * 2015-11-28 2016-03-30 江苏吟春碧芽股份有限公司 Tea orchard meteorology temperature inversion dynamic monitoring method and monitoring device
CN106526709A (en) * 2016-09-26 2017-03-22 北京无线电测量研究所 Multi-source equipment networking-based airport cloud and fog integrated early warning system and method
CN107870332A (en) * 2016-09-26 2018-04-03 北京无线电测量研究所 A kind of wind profile radar atmospheric turbulance energy detection system and method
CN111323782A (en) * 2020-04-16 2020-06-23 内蒙古工业大学 Radar synchronous monitoring method based on fuzzy logic

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008014837A (en) * 2006-07-06 2008-01-24 Toshiba Corp Radar system and its signal processing method
CN102323574A (en) * 2011-06-25 2012-01-18 中国航天科工集团第二研究院二十三所 Wind profile radar signal processing method
CN202735511U (en) * 2012-07-12 2013-02-13 南京信息工程大学 Wind profile radar signal processing system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008014837A (en) * 2006-07-06 2008-01-24 Toshiba Corp Radar system and its signal processing method
CN102323574A (en) * 2011-06-25 2012-01-18 中国航天科工集团第二研究院二十三所 Wind profile radar signal processing method
CN202735511U (en) * 2012-07-12 2013-02-13 南京信息工程大学 Wind profile radar signal processing system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
王勇 等: "边界层风廓线雷达测温系统设计", 《气象》 *
谭剑波 等: "风廓线雷达RASS声发射系统设计", 《现代雷达》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444916A (en) * 2015-11-28 2016-03-30 江苏吟春碧芽股份有限公司 Tea orchard meteorology temperature inversion dynamic monitoring method and monitoring device
CN106526709A (en) * 2016-09-26 2017-03-22 北京无线电测量研究所 Multi-source equipment networking-based airport cloud and fog integrated early warning system and method
CN107870332A (en) * 2016-09-26 2018-04-03 北京无线电测量研究所 A kind of wind profile radar atmospheric turbulance energy detection system and method
CN106526709B (en) * 2016-09-26 2020-02-21 北京无线电测量研究所 Airport cloud and mist comprehensive early warning system and method based on multi-source equipment networking
CN111323782A (en) * 2020-04-16 2020-06-23 内蒙古工业大学 Radar synchronous monitoring method based on fuzzy logic

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