CN102819024B - Microwave hyperspectral digital processing and control method and device - Google Patents
Microwave hyperspectral digital processing and control method and device Download PDFInfo
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- CN102819024B CN102819024B CN201210299148.0A CN201210299148A CN102819024B CN 102819024 B CN102819024 B CN 102819024B CN 201210299148 A CN201210299148 A CN 201210299148A CN 102819024 B CN102819024 B CN 102819024B
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Abstract
The embodiment of the invention discloses a microwave hyperspectral digital processing and control method and a device. The device comprises a collecting unit and a microwave hyperspectral digital processing unit, wherein the collecting unit is used for collecting voltage signals with sky bright temperature information output by a microwave hyperspectral radiation meter and real-time ground surface weather data required by atmospheric profile inversion, and the microwave hyperspectral digital processing unit is used for inversing the voltage signals with sky bright temperature information collected by the collecting unit and the real-time ground surface weather data required by the atmospheric profile inversion into weather parameter curves. The method and the device provided by the invention solve the technical problem that the microwave radiation meter in the prior art cannot be used for hyperspectral resolution atmospheric profile inversion, the high-speed microwave hyperspectral radiation meter data collection is realized, and meanwhile, the atmospheric profile inversion at the hyperspectral resolution is also realized.
Description
Technical field
The present invention relates to microwave remote sensing technique field, particularly the high spectrum digital processing of a kind of microwave and control method and device.
Background technology
Along with the development in microwave technology, in microwave remote sensing field, microwave radiometer is the base microwave remote sensing equipment of a passive type, can round-the-clock, round-the-clock work.Be mainly used in Small and Medium Sized weather phenomenon, as storm, lightning, heavy showers, mist, freezing and boundary layer is turbulent.For the Small and Medium Sized weather disaster that generates or dissipate in the short time, although just zonal, part event harmfulness is larger.In current Study of Meso Scale Weather phenomenon observation process, sounding balloon and weather radar are conventional means.Microwave has capacity of working on one's own, can, in almost various environmental baseline work, be very suitable for automatic weather station.For the complete atmosphere profile of inverting, inverting data and raw data are all preserved.Complete customized or global standards algorithm is provided.
Although microwave radiometer has above advantage, cannot realize robotization control and can not carry out the atmosphere profile inverting of high frequency spectrum resolution.Therefore the atmosphere profile inverting that, how to realize high spectral resolution is one technical matters to be solved.
Summary of the invention
The high spectrum digital processing of a kind of microwave and control method and device are provided in the embodiment of the present invention, can not have carried out the technical matters of the atmosphere profile inverting of high frequency spectrum resolution to solve prior art microwave radiometer.
For addressing the above problem, the invention provides the high spectrum digital processing and control unit of a kind of microwave, comprising: the high spectrum digital processing element of collecting unit and microwave, wherein,
Described collecting unit, for gathering the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectrum receiver unit output of the high spectral radiometer microwave of microwave; And described voltage signal and earth's surface weather data are transferred to the high spectrum digital processing element of described microwave;
The high spectrum digital processing element of described microwave, the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting that send for receiving collecting unit, described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere; And be meteorologic parameter curve by described voltage signal and earth's surface weather data inverting.
Optionally, described collecting unit comprises:
High-speed data acquisition unit, for gathering the voltage signal with the bright temperature information of atmosphere of the high spectrum receiver unit output of microwave;
Global location unit, for measuring global position system GPS data, so that clock is positioned;
Temperature Humidity Sensor, for detection of temperature, the humidity information on earth's surface;
Baroceptor, for detection of the pressure information on earth's surface.
Optionally, the high spectrum digital processing element of described microwave comprises:
Neural Network Data processing unit, for obtaining local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of the first atmosphere; And the bright temperature matrix of described the first atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of the first atmosphere after compression; And utilize neural network algorithm to carry out training managing to the bright temperature matrix of the first atmosphere after compressing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage;
Inverting unit, the voltage signal with the bright temperature information of atmosphere described collecting unit being collected for the high spectrum neural network of microwave of having trained according to described Neural Network Data processing unit and the required real-time earth's surface weather data inverting of atmosphere profile inverting are meteorologic parameter curve or atmosphere profile.
Optionally, described Neural Network Data processing unit comprises:
Profile collector unit, for adding up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years;
Bright temperature analogue unit, for being scaled the bright temperature matrix of the first atmosphere by described atmosphere temperature profile, air pressure profile and the Water vapor profiles of statistics; The bright temperature matrix of described the first atmosphere comprises the bright temperature information of atmosphere of high frequency spectrum resolution for many years;
The first microwave hyperspectral information compression unit, for the bright temperature matrix of the first atmosphere of described bright temperature analogue unit output is carried out to Spectrum compression, obtains the bright temperature matrix of the first atmosphere after compression;
Neural metwork training unit, be used for utilizing neural network algorithm, according to described atmosphere temperature profile, air pressure profile and Water vapor profiles, the bright temperature matrix of the first atmosphere after compressing is carried out to training managing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage.
Optionally, described neural metwork training unit comprises:
Input port, local atmosphere temperature profile, air pressure profile and the Water vapor profiles added up for inputting described profile collector unit;
Neuron, for the atmosphere temperature profile, air pressure profile and the Water vapor profiles that utilize input port input by the neural network of setting, the bright temperature matrix of the first atmosphere after compressing is carried out to iteration convergence, obtain the high spectrum neural network of the required microwave of having trained in inverting unit;
Output port, for exporting the neural network of having trained after described neuron iteration convergence.
Optionally, described inverting unit comprises:
Bright temperature data processing unit, the bright temperature information of atmosphere gathering for obtaining described collecting unit, according to the bright temperature information of described atmosphere, produces the bright temperature matrix of the second atmosphere, and gives the second microwave hyperspectral information compression unit by the bright temperature Transfer-matrix of described the second atmosphere;
The second microwave hyperspectral information compression unit, carries out Spectrum compression to the bright temperature matrix of the second atmosphere of described bright temperature data processing unit output, obtains the bright temperature matrix of the second atmosphere after compression;
Processing with Neural Network unit is meteorologic parameter curve or atmosphere profile for the high spectrum neural network of microwave of having trained according to described neural metwork training unit by the bright temperature inverse matrix of described the second atmosphere.
Optionally, also comprise:
Control module, before collecting described voltage signal and earth's surface weather data at described collecting unit, controls the rotational angle of microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Optionally, described control module comprises:
Rotatable platform control module, turns to appointment degree of facing upward and position angle for controlling microwave reflection mirror unit, so that the center of the receiving antenna unit that described microwave reflection mirror unit connects with the high spectrum receiver unit of described microwave is consistent;
Receiver control module, divides for the frequency range of controlling the high spectrum receiver unit of microwave one-level receiver;
Execute-in-place unit, for directly operating the front panel of the high spectral radiometer of microwave.
Optionally, also comprise:
Operated from a distance control module, for gather the required real-time earth's surface weather data of the voltage signal with the bright temperature information of atmosphere of the high spectral radiometer output of microwave and the inverting of atmosphere profile at described collecting unit before, the control signal that receiving remote sends, according to the rotational angle of microwave reflection mirror unit described in the high spectral radiometer of described control signal control microwave; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Accordingly, the present invention also provides the high spectrum digital processing of a kind of microwave and control method, and described method comprises:
Gather the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectrum receiver unit output of microwave in the high spectral radiometer of microwave; Described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere;
Be meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting.
Optionally, described is meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting, comprising:
Add up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of atmosphere; And the bright temperature matrix of described atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of atmosphere after compression; And utilize neural network algorithm to carry out training managing to compressing the bright temperature matrix of rear atmosphere, the high spectrum neural network of microwave of having been trained, and the high spectrum neural network of microwave of having trained described in storage;
Be meteorologic parameter curve or atmosphere profile according to the high spectrum neural network of described microwave of having trained by the voltage signal with the bright temperature information of atmosphere obtaining and the required real-time earth's surface weather data inverting of atmosphere profile inverting.
Optionally, before collecting described voltage signal and earth's surface weather data, described method also comprises:
Control the rotational angle of microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Optionally, before collecting described voltage signal and earth's surface weather data, described method also comprises:
The control signal that receiving remote sends;
According to the rotational angle of microwave reflection mirror unit described in the high spectral radiometer of described control signal control microwave; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
As shown from the above technical solution, the present invention is by obtaining voltage signal and the atmosphere profile inverting required real-time earth's surface weather data of the high spectrum receiver unit of microwave output multi-channel with the bright temperature information of atmosphere, and is meteorologic parameter curve by its inverting; Realize the high spectral radiometer data acquisition of microwave at a high speed; Also realized the atmosphere profile inverting under high frequency spectrum resolution simultaneously.That is to say, the present invention combines the high spectral radiometer of microwave, embedded system is combined with traditional hyperchannel radiometer, thereby a kind of full-automatic, processing speed is fast and system complexity is low digital processing unit is provided.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The first structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 1 provides for the embodiment of the present invention;
The second structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 2 provides for the embodiment of the present invention;
The 3rd structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 3 provides for the embodiment of the present invention;
The 4th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 4 provides for the embodiment of the present invention;
The 5th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 5 provides for the embodiment of the present invention;
The 6th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 6 provides for the embodiment of the present invention;
The interface schematic diagram of execute-in-place unit in the high spectral radiometer of a kind of microwave that Fig. 7 provides for the embodiment of the present invention;
The 7th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 8 provides for the embodiment of the present invention;
The high spectrum digital processing of a kind of microwave that Fig. 9 provides for the embodiment of the present invention and the process flow diagram of control method.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the first structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 1 provides for the embodiment of the present invention; In this embodiment, the high spectrum digital processing and control unit of described microwave adopts built-in Linux operating system, and realizes based on AT91SAM9261 Embedded Hardware Platform, but is not limited to this.The high spectrum digital processing and control unit of described microwave is connected with the high spectrum receiver unit of microwave or the high spectrum receiver apparatus of microwave in the high spectral radiometer of microwave, wherein, the high spectrum digital processing and control unit of microwave comprises: the high spectrum digital processing element 12 of collecting unit 11 and microwave, wherein
Described collection unit 11, for gathering the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectrum receiver unit output of the high spectral radiometer microwave of microwave; And described voltage signal and earth's surface weather data are transferred to the high spectrum digital processing element 12 of described microwave;
Wherein, in this embodiment, the process of its collection, can be connected or transmit with the high spectral radiometer of microwave by netting twine or with the memory device of usb interface.But, also can be that the high spectrum receiver unit of microwave in the high spectral radiometer of microwave initiatively feeds back to the high spectrum digital processing element of microwave by voltage signal and the required real-time earth's surface weather data of atmosphere profile inverting, certainly, it can also be other transmission mode, such as WIFI etc., the present embodiment is not restricted.
The high spectrum digital processing element 12 of described microwave, for receiving the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting that collecting unit 11 sends, described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere; And be that meteorologic parameter log inversion is meteorologic parameter curve by described voltage signal and earth's surface weather data inverting.
In this embodiment, the technical indicator of the high spectrum digital processing element of described microwave is as shown in table 1:
Table 1
| The high spectrum digital processing element of microwave | Technical indicator |
| Moisture profile precision | 4％～7％ |
| Temperature profile precision | 3％～5％ |
| Vertical resolution | < 200 meters |
In the embodiment of the present invention, voltage signal and the required real-time earth's surface weather data of atmosphere profile inverting by the multichannel that collects with the bright temperature information of atmosphere, and be meteorologic parameter curve by its inverting, the present invention has realized the high spectral radiometer data acquisition of microwave at a high speed; Also realized the atmosphere profile inverting under high frequency spectrum resolution simultaneously.
Optionally, in the basis of above-described embodiment, the high spectrum digital processing element 12 of described microwave can comprise: Neural Network Data processing unit 121 and inverting unit 122, its structural representation as shown in Figure 2, the second structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 2 provides for the embodiment of the present invention.Wherein, described Neural Network Data processing unit 121, for obtaining local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of the first atmosphere; And the bright temperature matrix of described the first atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of the first atmosphere after compression; And utilize neural network algorithm to carry out training managing to the bright temperature matrix of the first atmosphere after compressing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage.Wherein, described Neural Network Data processing unit also can be called Neural Network Data storehouse;
Described inverting unit 122, the voltage signal with the bright temperature information of atmosphere described collecting unit being collected for the high spectrum neural network of microwave of having trained according to described Neural Network Data processing unit and the required real-time earth's surface weather data inverting of atmosphere profile inverting are meteorologic parameter curve or atmosphere profile.
Also refer to Fig. 3, the 3rd structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 3 provides for the embodiment of the present invention, on the basis of above-described embodiment, described Neural Network Data processing unit 121 comprises: profile collector unit 311, bright temperature analogue unit 312, the first microwave hyperspectral information compression unit 313 and neural metwork training unit 314; Described inverting unit 122 comprises: bright temperature data processing unit 321, the second microwave hyperspectral information compression unit 322 and Processing with Neural Network unit 323, wherein,
Described profile collector unit 311, for adding up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Such as, the information such as the disclosed atmosphere temperature profile of statistics Beijing weather bureau, air pressure profile and Water vapor profiles, the atmosphere profile data statistics of this information based on nearly 1989～2011 years forms.Meteorological data data were arranged by month, can count local meteorological data, and described meteorological data is exported to bright temperature analogue unit 312 according to these meteorological data data;
Described bright temperature analogue unit 312, for being scaled the bright temperature matrix of the first atmosphere by described atmosphere temperature profile, air pressure profile and the Water vapor profiles of statistics; The bright temperature matrix of described the first atmosphere comprises the bright temperature information of atmosphere of high frequency spectrum resolution for many years;
That is to say, described bright temperature analogue unit 312 is based on Liebe87 radiative transfer model, and Beijing area atmosphere temperature profile, air pressure profile and the Water vapor profiles that profile collector unit is added up is scaled the bright temperature matrix of atmosphere, wherein, and the bright temperature matrix T of atmosphere
f(θ) computing formula is, but is not limited to this following manner, also can be by other means, and the present embodiment is not restricted:
Wherein, f is frequency, and θ is the irradiating angle of the high spectral radiometer of microwave,
be defined as:
Wherein, in formula (3), h is Planck's constant, and k is Boltzmann constant, and c is the light velocity, and t is the temperature under current atmosphere height, and this temperature is by extracting from the Beijing area atmosphere temperature profile of profile collector unit statistics.
Wherein, τ in formula (1)
f(θ) be the atmospheric opacity under current height, be specially:
Wherein, h
zfor the atmosphere height of radiometer irradiating angle, the direction of illumination that z is radiometer, K
afor the atmosphere absorbance under current atmosphere height; Wherein, atmosphere absorbance K
aby approximate the obtaining of linear line shape fitting of oxygen and aqueous vapor, described atmosphere absorbance K
acomputing formula be:
K
a(f)＝0.1820fN″(f) (5)
" (f) be the imaginary part of atmosphere complex index of refraction, it has comprised the contribution of oxygen, aqueous vapor linear spectral line for wherein, N.The contribution calculation of the linear spectral line of oxygen and aqueous vapor is specific as follows:
Wherein, S
irepresent the intensity (KHz) of i article of spectral line, F (f)
ithe spectrum shape function (GHz of corresponding spectral line
-1), f
iit is the frequency of i article of spectral line.
Compose for oxygen absorption:
S
i＝10
-6a
1pθ
3exp[a
2(1-θ
t)] (7)
Wherein
δ
i＝10
-3(a
5+a
6θ
t)pθ
t 0.8 (10)
θ
t＝300/(t+273.15) (11)
Compose for moisture sorption:
S
j＝10
-3b
1eθ
t 3.5exp[b
2(1-θ
t)] (12)
Wherein
δ
j＝0 (15)
Wherein, the p in above-mentioned formula, t, e represents respectively air pressure, temperature and the vapour pressure under current atmosphere height, they are by extracting somewhere (such as Beijing area) atmospheric gas pressure profile, temperature profile and Water vapor profiles in profile collector unit.And described a
1～a
6and b
1～b
6being respectively the spectral line absorption efficiency of oxygen and aqueous vapor, is known constant.Through type (5) calculates the atmosphere absorbance K under the high frequency spectrum resolution of somewhere (such as Beijing area)
a, and substitution formula (1) and formula (4) obtain the bright temperature matrix of atmosphere under different frequency, different irradiating angle.The bright temperature information of atmosphere that the bright temperature matrix of atmosphere has comprised Beijing area high frequency spectrum resolution in 1989～2011 years.
Described the first microwave hyperspectral information compression unit 313, carries out Spectrum compression for the bright temperature matrix of the first atmosphere that described bright temperature analogue unit 312 is exported, and obtains the bright temperature matrix of the first atmosphere after compression; Wherein, described microwave hyperspectral information compression unit 313 is based on mapping principal element method, and the bright temperature matrix of the first atmosphere that bright temperature analogue unit 312 is exported carries out the compression on frequency spectrum; Such as 100 atmosphere profiles with upper frequency being compressed in 20, the object of its compression is to avoid the too high neural network training that causes of pathosis of the bright temperature matrix of atmosphere under the high spectral conditions of microwave failed.
Described neural metwork training unit 314, be used for utilizing neural network algorithm, according to described atmosphere temperature profile, air pressure profile and Water vapor profiles, the bright temperature matrix of the first atmosphere after compressing is carried out to training managing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage;
Wherein, described neural metwork training unit is realized based on neural network algorithm, comprise input port, output port and neuron, wherein, described input port is for inputting local atmosphere temperature profile, air pressure profile and the Water vapor profiles that described profile collector unit is added up; Described neuron, for the atmosphere temperature profile, air pressure profile and the Water vapor profiles that utilize input port input by the neural network of setting, the bright temperature matrix of the first atmosphere after compressing is carried out to iteration convergence, obtain the high spectrum neural network of the required microwave of having trained in inverting unit; Described output port, for exporting the neural network of having trained after described neuron iteration convergence.
In this embodiment, neural metwork training unit adopts error back propagation (BP) neural network algorithm conventionally, and neuronic output function adopts S shape transition function, and its S shape transition function is as described below:
Wherein, T
f(θ) be the bright temperature matrix of atmosphere, f and θ are respectively frequency of operation and the irradiating angle of the high spectral radiometer of microwave.P is input port, and for example, while needing trained temperature profile neural network, p represents atmosphere temperature profile, and W and b are respectively the required weights of computation process and threshold value.The computation process of neural network is as follows:
1, input known atmosphere profile by input port, by the neuronal structure of setting and weights and the threshold value of a front iteration, obtain the neuron output of last one deck.
2, described weights and threshold value are modified, calculate forward weights and the impact of threshold value on total error from last one deck, and after they are modified, return to the 1st step.
Said process is carried out, after iteration convergence, obtaining required neural network, that is to say, described neural metwork training unit is for providing inverting unit required neural network.Wherein, the computation process of neural network has been to know technology to those skilled in the art, again repeats no more.
Optionally, described inverting unit 122, for being atmosphere profile by the inverting of radiometer observation data, comprising: bright temperature data processing unit 321, the second microwave hyperspectral information compression unit 322 and Processing with Neural Network unit 323, wherein,
Described bright temperature data processing unit 321, for obtaining the bright temperature information of atmosphere that described collecting unit 11 gathers, according to the bright temperature information of described atmosphere, produce the bright temperature matrix of the second atmosphere, and give the second microwave hyperspectral information compression unit 322 by the bright temperature Transfer-matrix of described the second atmosphere;
Described the second microwave hyperspectral information compression unit 322, the bright temperature matrix of the second atmosphere that described bright temperature data processing unit 321 is exported carries out Spectrum compression, obtains the bright temperature matrix of the second atmosphere after compression; Wherein,
This second microwave hyperspectral information compression unit adopts identical structure with the first microwave hyperspectral information compression unit in Neural Network Data processing unit, its difference is, the bright temperature matrix of atmosphere that this this second microwave hyperspectral information compression unit is surveyed for compressing the high spectral radiometer of microwave;
Described Processing with Neural Network unit 323 is meteorologic parameter curve or atmosphere profile for the high spectrum neural network of microwave of having trained according to described neural metwork training unit 314 by the bright temperature inverse matrix of described the second atmosphere.
Wherein, described Processing with Neural Network unit is based on neural network algorithm, by extracting the neural network having trained in neural metwork training unit (being called again Neural Network Data storehouse), be atmosphere profile by the bright temperature inverse matrix of the second atmosphere of microwave hyperspectral information compression unit output.
Optionally, in the above-described embodiments, the high spectrum digital processing element of described microwave can also comprise: operated from a distance control module 41, its structural representation as shown in Figure 4, the 4th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 4 provides for the embodiment of the present invention, wherein, described operated from a distance control module 41, for obtain the required real-time earth's surface weather data of the voltage signal with the bright temperature information of atmosphere of the high spectral radiometer of microwave output and the inverting of atmosphere profile at described collecting unit 11 before, the control signal that receiving remote sends, according to the rotational angle of microwave reflection mirror unit described in described control signal control, and control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave, and manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Wherein, described operated from a distance control module can be made up of remote computer and long-range man-machine interface; Wherein, described remote computer can be desktop computer or the notebook computer that Windows XP operating system has been installed, described remote computer is positioned over the indoor of 50 meters far away of the high spectral radiometers of distance microwave, is connected or transmits with the high spectral radiometer of microwave by netting twine or with the memory device of usb interface.Long-range man-machine interface realizes by software, such as, the C Plus Plus in Microsoft Visual Studio10.0 software etc.That is to say, described remote operation unit is for realizing the indoor automation mechanized operation to radiometer.
Optionally, the high spectrum digital processing element of described microwave can be integrated in computing machine or server, also can independently dispose, and this enforcement is not restricted.
In above-described embodiment, by obtaining voltage signal and the atmosphere profile inverting required real-time earth's surface weather data of the high spectrum receiver unit of microwave output multi-channel with the bright temperature information of atmosphere, and be meteorologic parameter curve by its inverting; Realize the high spectral radiometer data acquisition of microwave at a high speed; Also realized the atmosphere profile inverting under high frequency spectrum resolution simultaneously.That is to say, the present invention combines the high spectral radiometer of microwave, embedded system is combined with traditional hyperchannel radiometer, thereby a kind of full-automatic, processing speed is fast and system complexity is low digital processing unit is provided.
Optionally, described device can also comprise control module 51, its structural representation as shown in Figure 5, the 5th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 5 provides for the embodiment of the present invention, described control module 51, for before collecting described voltage signal and earth's surface weather data at described collecting unit 11, is controlled the rotational angle of microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Optionally, described control module 51 comprises: rotatable platform control module 511, receiver control module 512 and execute-in-place unit 513; Wherein, its structural representation as shown in Figure 6, the 6th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 6 provides for the embodiment of the present invention, wherein,
Described rotatable platform control module 511, turns to appointment degree of facing upward and position angle for controlling microwave reflection mirror unit, so that the center of the receiving antenna unit that described microwave reflection mirror unit connects with the high spectrum receiver unit of described microwave is consistent.Wherein, described rotatable platform control module can adopt embedded system Liu road I/O interface structure to realize, specifically comprise: pulse signal interface, enable signal interface, direction signal interface, zero signal interface, A road signaling interface and B road signaling interface, but be not limited to this, wherein, A, B two paths of signals phase phasic difference 90 are spent, by judging phase relation control motor rotation speed and the direction between them, that is to say, described rotatable platform control module is for controlling the rotational angle of microwave reflection mirror.
Wherein, described rotatable platform control module comprises: servomotor and angle of pitch orientator, described servomotor is selected the real-Time Compensation type closed-loop control servomotor on market, and it comprises: several parts such as motor, motor driver, closed loop controller and scrambler.It is for controlling the rotation of microwave reflection mirror unit, and servomotor passes through the high spectrum digital processing element of connected microwave (being digital processing and system control unit) and carries out angle control; In the time that microwave reflection mirror unit rotates to zenith angle, a pulse signal of scrambler transmitting is to digital processing and system control unit, for period regulation luffing angle; This angle of pitch orientator selects two-dimentional gravity inductor core sheet to realize, and it is connected in servomotor, and for measuring in real time the anglec of rotation of microwave reflection mirror unit, the connection of angle of pitch orientator transmission of angle information are to digital processing and system control unit.
Described receiver control module 512, divides for the frequency range of controlling the high spectrum receiver unit of microwave one-level receiver.Wherein, described receiver control module adopts the multidiameter delay interface structure of embedded system to realize, 4 bit binary number of parallel interface representative have represented the work at present passage of one-level receiver, that is to say, described receiver control module is divided for the frequency range of controlling one-level receiver, and the parallel interface of described receiver control module is as shown in table 2:
Table 2
| The each channel central frequency of one-level receiver | 4 bit parallel interfaces |
| 18.4GHz | 0000 |
| 19.2GHz | 0001 |
| 20.0GHz | 0010 |
| 20.8GHz | 0011 |
| 21.6GHz | 0100 |
| 22.4GHz | 0101 |
| 23.2GHz | 0110 |
| 24.0GHz | 0111 |
| 24.8GHz | 1000 |
| 25.6GHz | 1001 |
Described execute-in-place unit 513, directly operates the high spectral radiometer of microwave for basis.Wherein, described execute-in-place unit comprises: several parts such as liquid crystal touch screen 5331, numeric keypad 5332 and on-the-spot man-machine interface (not shown), its structural representation as shown in Figure 7, the interface schematic diagram of execute-in-place unit in the high spectral radiometer of a kind of microwave that Fig. 7 provides for the embodiment of the present invention.
As shown in Figure 7, described liquid crystal touch screen 5331 and numeric keypad 5332 are installed on side of the high spectral radiometer of microwave; Liquid crystal touch screen 5331 is controlled by operated from a distance control module; On-the-spot man-machine interface is the control interface being installed in embedded system, and show by LCD screen 5331, operate by liquid crystal touch screen 5331 and numeric keypad 5332, that is to say, execute-in-place unit is for realizing the outdoor intuitive operation to radiometer.
Optionally, on the basis of Fig. 6, described collecting unit 11 can comprise: high-speed data acquisition unit 111, global location unit 112, Temperature Humidity Sensor 113 and baroceptor 114; Its structural representation as shown in Figure 8, the 7th structural representation of the high spectrum digital processing and control unit of a kind of microwave that Fig. 8 provides for the embodiment of the present invention; Wherein,
Described high-speed data acquisition unit 111, for gathering the voltage signal with the bright temperature information of atmosphere of the high spectrum receiver unit output of microwave; Wherein, described high-speed data acquisition unit can be AD acquisition module, and described AD acquisition module selects AD chip to realize, and realizes multi-channel sampling by multiplexing structure.Wherein, the technical indicator of AD acquisition module is as shown in table 3.
Table 3
| AD acquisition module | Technical indicator |
| Acquisition channel number | > 10 |
| Sampling precision | 16 |
| Sampling rate | >1KHz |
Global location unit 112, for measuring global position system GPS data, so that clock is positioned, or described gps data is transferred to remote computer, so that described computing machine carries out clock location; Wherein, global location unit can be GPS module, and it selects model can be LEA-5S model, and described GPS module comprises gps antenna and GPS receiver, and the process that it is concrete to those skilled in the art, has been to know technology, does not repeat them here.
Described Temperature Humidity Sensor 113, for detection of temperature, the humidity information on earth's surface; Wherein, the model that described Temperature Humidity Sensor is selected can be the Temperature Humidity Sensor of JCJ100N model, but is not limited to this;
Described baroceptor 114, for detection of the pressure information on earth's surface; Its model of selecting can be the baroceptor of BMP085 model, but is not limited to this.Wherein, the precision of the baroceptor on above-mentioned detection earth's surface is as shown in table 4:
Table 4
| The baroceptor on earth's surface | Precision |
| Temperature (20 DEG C～60 DEG C) | 0.5℃@25℃ |
| Relative humidity (0～100%) | 3％ |
| Air pressure (800～1060mb) | 0.3mb |
From above-described embodiment, the embodiment of the present invention provides a kind of microwave high spectrum digital processing element, by obtaining the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectral radiometer output of microwave, and be meteorologic parameter curve by its inverting.The present invention has realized radiometer data acquisition at a high speed; Realize the robotization control to the high spectral radiometer of microwave; Realize the atmosphere profile inverting under high frequency spectrum resolution; Further also realize the atmosphere profile inverting of high precision, high vertical resolution; Also met the requirement of lightweight, low-power consumption and low complex degree simultaneously.
Based on above-mentioned implementation procedure, the embodiment of the present invention also provides the method for the high spectrum digital processing of a kind of microwave and control, and as shown in Figure 9, described method comprises its process flow diagram:
Step 901: the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting that gather the high spectrum receiver unit output of microwave in the high spectral radiometer of microwave; Described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere;
Step 902: be meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting.
Optionally, before the obtaining of step 901, described method can also comprise: send different control signals to the high spectral radiometer of microwave, so that the high spectral radiometer of microwave is according to the rotational angle of described different control signal control microwave reflection mirror units; Control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Optionally, described is meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting, comprising: add up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of atmosphere; And the bright temperature matrix of described atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of atmosphere after compression; And utilize neural network algorithm to carry out training managing to compressing the bright temperature matrix of rear atmosphere, the high spectrum neural network of microwave of having been trained, and the high spectrum neural network of microwave of having trained described in storage; Be meteorologic parameter curve or atmosphere profile according to the high spectrum neural network of described microwave of having trained by the voltage signal with the bright temperature information of atmosphere obtaining and the required real-time earth's surface weather data inverting of atmosphere profile inverting.
Optionally, before collecting described voltage signal and earth's surface weather data, described method can also comprise: the rotational angle of controlling microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
Optionally, before collecting described voltage signal and earth's surface weather data, described method can also comprise:
The control signal that receiving remote sends; According to the rotational angle of microwave reflection mirror unit described in the high spectral radiometer of described control signal control microwave; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
In described method, the implementation procedure of each step refers to function and efficacy corresponding in said apparatus, does not repeat them here.
It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the present invention or embodiment.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. the high spectrum digital processing and control unit of microwave, is characterized in that, comprising: the high spectrum digital processing element of collecting unit and microwave, wherein,
Described collecting unit, for gathering the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectrum receiver unit output of the high spectral radiometer microwave of microwave; And described voltage signal and earth's surface weather data are transferred to the high spectrum digital processing element of described microwave;
The high spectrum digital processing element of described microwave, the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting that send for receiving collecting unit, described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere; And be meteorologic parameter curve by described voltage signal and earth's surface weather data inverting;
The high spectrum digital processing element of described microwave comprises:
Neural Network Data processing unit, for obtaining local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of the first atmosphere; And the bright temperature matrix of described the first atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of the first atmosphere after compression; And utilize neural network algorithm to carry out training managing to the bright temperature matrix of the first atmosphere after compressing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage;
Inverting unit, the voltage signal with the bright temperature information of atmosphere described collecting unit being collected for the high spectrum neural network of microwave of having trained according to described Neural Network Data processing unit and the required real-time earth's surface weather data inverting of atmosphere profile inverting are meteorologic parameter curve or atmosphere profile.
2. device according to claim 1, is characterized in that, described collecting unit comprises:
High-speed data acquisition unit, for gathering the voltage signal with the bright temperature information of atmosphere of the high spectrum receiver unit output of microwave;
Global location unit, for measuring global position system GPS data, so that clock is positioned;
Temperature Humidity Sensor, for detection of temperature, the humidity information on earth's surface;
Baroceptor, for detection of the pressure information on earth's surface.
3. device according to claim 1, is characterized in that, described Neural Network Data processing unit comprises:
Profile collector unit, for adding up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years;
Bright temperature analogue unit, for being scaled the bright temperature matrix of the first atmosphere by described atmosphere temperature profile, air pressure profile and the Water vapor profiles of statistics; The bright temperature matrix of described the first atmosphere comprises the bright temperature information of atmosphere of high frequency spectrum resolution for many years;
The first microwave hyperspectral information compression unit, for the bright temperature matrix of the first atmosphere of described bright temperature analogue unit output is carried out to Spectrum compression, obtains the bright temperature matrix of the first atmosphere after compression;
Neural metwork training unit, for utilizing neural network algorithm, according to described atmosphere temperature profile, air pressure profile and Water vapor profiles, the bright temperature matrix of the first atmosphere after compressing is carried out to training managing, obtain the high spectrum neural network of the required microwave of having trained in inverting unit, and the high spectrum neural network of microwave of having trained described in storage.
4. device according to claim 3, is characterized in that, described neural metwork training unit comprises:
Input port, local atmosphere temperature profile, air pressure profile and the Water vapor profiles added up for inputting described profile collector unit;
Neuron, for the atmosphere temperature profile, air pressure profile and the Water vapor profiles that utilize input port input by the neural network of setting, the bright temperature matrix of the first atmosphere after compressing is carried out to iteration convergence, obtain the high spectrum neural network of the required microwave of having trained in inverting unit;
Output port, for exporting the neural network of having trained after described neuron iteration convergence.
5. device according to claim 4, is characterized in that, described inverting unit comprises:
Bright temperature data processing unit, the bright temperature information of atmosphere gathering for obtaining described collecting unit, according to the bright temperature information of described atmosphere, produces the bright temperature matrix of the second atmosphere, and gives the second microwave hyperspectral information compression unit by the bright temperature Transfer-matrix of described the second atmosphere;
The second microwave hyperspectral information compression unit, carries out Spectrum compression to the bright temperature matrix of the second atmosphere of described bright temperature data processing unit output, obtains the bright temperature matrix of the second atmosphere after compression;
Processing with Neural Network unit is meteorologic parameter curve or atmosphere profile for the high spectrum neural network of microwave of having trained according to described neural metwork training unit by the bright temperature inverse matrix of described the second atmosphere.
6. according to the device described in claim 1 to 5 any one, it is characterized in that, also comprise:
Control module, before collecting described voltage signal and earth's surface weather data at described collecting unit, controls the rotational angle of microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
7. device according to claim 6, is characterized in that, described control module comprises:
Rotatable platform control module, turns to appointment degree of facing upward and position angle for controlling microwave reflection mirror unit, so that the center of the receiving antenna unit that described microwave reflection mirror unit connects with the high spectrum receiver unit of described microwave is consistent;
Receiver control module, divides for the frequency range of controlling the high spectrum receiver unit of microwave one-level receiver;
Execute-in-place unit, for directly operating the front panel of the high spectral radiometer of microwave.
8. according to the device described in claim 1 to 5 any one, it is characterized in that, also comprise:
Operated from a distance control module, for gather the required real-time earth's surface weather data of the voltage signal with the bright temperature information of atmosphere of the high spectral radiometer output of microwave and the inverting of atmosphere profile at described collecting unit before, the control signal that receiving remote sends, according to the rotational angle of microwave reflection mirror unit in the high spectral radiometer of described control signal control microwave; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
9. the high spectrum digital processing of microwave and a control method, is characterized in that, comprising:
Gather the voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data of atmosphere profile inverting of the high spectrum receiver unit output of microwave in the high spectral radiometer of microwave; Described earth's surface weather data comprises: the radiation temperature in blackbody calibration source and the absolute pressure of atmosphere;
Be meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting;
Wherein, described is meteorologic parameter curve by the described voltage signal with the bright temperature information of atmosphere and the required real-time earth's surface weather data inverting of atmosphere profile inverting, comprising:
Add up local weather bureau disclosed atmosphere temperature profile, air pressure profile and Water vapor profiles for many years; Described atmosphere temperature profile, air pressure profile and Water vapor profiles are scaled to the bright temperature matrix of atmosphere; And the bright temperature matrix of described atmosphere is carried out to Spectrum compression, obtain the bright temperature matrix of atmosphere after compression; And utilize neural network algorithm to carry out training managing to the bright temperature matrix of atmosphere after compressing, the high spectrum neural network of microwave of having been trained, and the high spectrum neural network of microwave of having trained described in storage;
Be meteorologic parameter curve or atmosphere profile according to the high spectrum neural network of described microwave of having trained by the voltage signal with the bright temperature information of atmosphere obtaining and the required real-time earth's surface weather data inverting of atmosphere profile inverting.
10. method according to claim 9, is characterized in that, before collecting described voltage signal and earth's surface weather data, described method also comprises:
Control the rotational angle of microwave reflection mirror unit; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
11. methods according to claim 9, is characterized in that, before collecting described voltage signal and earth's surface weather data, described method also comprises:
The control signal that receiving remote sends;
According to the rotational angle of microwave reflection mirror unit in the high spectral radiometer of described control signal control microwave; And control the frequency range channel selecting of one-level receiver in the high spectrum receiver unit of described microwave; And manual operation or the automation mechanized operation of the high spectral radiometer of control microwave.
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| CN106054210B (en) * | 2016-07-11 | 2018-07-06 | 中国科学院上海技术物理研究所 | A kind of differential absorption lidar and method for detecting earth surface pressure and height above sea level |
| CN108254076B (en) * | 2017-11-22 | 2020-11-17 | 安徽四创电子股份有限公司 | Calibration method for multichannel millimeter wave radiometer |
| CN108107061B (en) * | 2017-12-20 | 2020-06-09 | 电子科技大学 | Channel improvement system and method of multichannel imaging radiometer |
| CN108387326B (en) * | 2017-12-28 | 2019-11-15 | 南京信息工程大学 | Polar-orbiting satellite high-resolution satellite data striped noise-filtering method |
| CN108827878B (en) * | 2018-04-08 | 2021-05-18 | 中国科学院国家空间科学中心 | Passive microwave remote sensing detection method for surface air pressure |
| CN113010991B (en) * | 2019-12-20 | 2024-04-05 | 中国科学院国家空间科学中心 | Spectral radiometer system simulation and performance evaluation method |
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