CN103986534A - Satellite signal channel environment monitoring system and method based on radiometer and range finder - Google Patents
Satellite signal channel environment monitoring system and method based on radiometer and range finder Download PDFInfo
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- CN103986534A CN103986534A CN201410232644.3A CN201410232644A CN103986534A CN 103986534 A CN103986534 A CN 103986534A CN 201410232644 A CN201410232644 A CN 201410232644A CN 103986534 A CN103986534 A CN 103986534A
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Abstract
The invention relates to a satellite signal channel environment monitoring system and method based on a radiometer and a range finder. The system comprises an ultrasonic ranging module, a solar radiometer, a data processing host and an alarm display module. The ultrasonic ranging module is connected with the data processing host, the solar radiometer is connected with the data processing host, the data processing host is connected with an antenna server in a communication antenna control system, and the alarm indication module is connected with the data processing host. On the basis of the prior art, a satellite signal transmission channel environment is monitored in the mode of ranging and vapor monitoring, an operator is helped to judge the satellite signal transmission environment more accurately, the time of fault analysis and handling is shortened when a satellite link cannot be established, the operator is effectively prompted to adjust the position of a satellite vehicle according to circumstances, and the fault handling efficiency is improved.
Description
Technical field
The invention belongs to satellite communication and ultrasonic technology field, particularly relate to a kind of satellite-signal channel environment monitoring system and method based on radiometer and rangefinder.
Background technology
Communication technology of satellite sets up the technical characterstics such as flexible owing to himself adopting radio communication, long distance of signal transmission, sending and receiving apparatus to install, make it in emergency command communication, play irreplaceable effect, wherein satellite communications vehicle fully demonstrates out by flexible, the simple, fast feature of above-mentioned satellite channel establishment especially, therefore in fields such as emergency communications, is widely used.Because is moving at any time in the geographical position of satellite car, so the satellite antenna of satellite car need to carry out real-time correction and adjustment to satellite angle and orientation, and overcome the signal Doppler effect bringing in satellite car moving process, in order to meet above-mentioned requirements, satellite car adopts " communication in moving " antenna conventionally.
" communication in moving " automatic tracking system is in initial static situation, by GPS, theodolite, SINS, measured the initial angle of longitude and latitude and the relative level face of course angle, carrier position, then according to its attitude and geographical position, satellite longitude, automatically determine and take the antenna elevation angle that horizontal plane is benchmark, keeping rotational orientation under the prerequisite constant to horizontal plane of the elevation angle, and with signal maximum mode auto-alignment satellite.In carrier movement process, measure the variation of attitude of carrier, by the computing of mathematical platform, be transformed to the error angle of antenna, by servomechanism, adjust antenna azimuth, the angle of pitch, polarizing angle, guarantee carrier in change procedure antenna to star in prescribed limit, make satellite transmitting antenna real-time tracking geostationary satellite in carrier movement.This system keeps track mode has autotracking and inertial navigation to follow the tracks of two kinds.Autotracking is to rely on satellite beacon to carry out antenna closed servo tracking; It is to utilize the variation of gyro inertial navigation combination sensitive carrier to carry out antenna tracking that inertial navigation is followed the tracks of.These two kinds of tracking can be automatically switched according to field condition.When system proceeds to after motion tracking star is complete, in autotracking mode, work; Meanwhile, inertial navigation system also enters operating state, and constantly exports the data such as antenna polarization, orientation and pitching.
Due to communication technology of satellite feature, make its transmission quality easily because barrier blocks and the impact of the adverse weather such as rain, snow, mist, the absorption of vapor in the atmosphere and oxygen can cause loss, and when frequency is greater than 20GHz, this effect is very serious.Vapour molecule has fixing electric dipole, and oxygen molecule has fixing magnetic dipole, and they all have fixing frequency, when the wave frequency resonance frequency intrinsic with it is identical, produces strong absorption.Gas molecule in atmosphere, condensation vapor thing (like rain, mist, cloud, snow etc.), sandstorm, smog etc. all have impact to the radio wave propagation of satellite link, but in Ka frequency range attentuation by rain not very big.Along with the increase of frequency, pad value sharply increases.When frequency is greater than 20GHz, the signal attenuation that heavy rain causes will be over more than 10dB, and the decay in some area, up to 25dB, so environmental factor is very large on the impact of satellite-signal attenuation, easily causes communication link normally to set up.
In practical operation is used, tradition directional antenna (for example: the mode that individual-soldier system) can whether have shelter by range estimation to star direction easily judges fast to failure cause, and in conjunction with weather condition, determine that signal fadeout problem reason is due to external environment or the fault of equipment own causes.But communication in moving technology is in order to make antenna in the satellite car best effect of middle performance of travelling, and the configuration design of antenna often adopts the cylinder design with rounded edges.Compare with traditional directional antenna, the configuration design of " communication in moving " antenna causes operating personnel directly by antenna direction, to judge satellite place direction, especially, in urban environment, operating personnel's failure judgement reason has been caused to certain difficulty.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of satellite-signal channel environment monitoring system and method based on radiometer and rangefinder.
In order to achieve the above object, the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention comprises: ultrasonic distance measuring module, actinometer, data processing main frame and alarm display module; Wherein: ultrasonic distance measuring module is supersonic range finder, it is connected with data processing main frame; Intensity of solar radiation checkout gear is counted in solar radiation, and it is connected with data processing main frame; Data processing main frame is detection control and the data processing core of native system, its with in antenna servo device in logical antenna control system be connected; Alarm indicating module is alarm signal output device, and it is connected with data processing main frame.
Described ultrasonic distance measuring module is comprised of ultrasonic transmitter and ultrasonic receiver.
The monitoring method of the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention comprises the following steps:
Step 1) device initialize: opening device power supply, system are carried out self check, and establish a communications link with the antenna servo device data-interface in communication in moving automatic tracking system;
Step 2) ultrasonic distance measuring module orientation adjustment: data processing main frame from antenna servo device data-interface, obtain comprise orientation, the elevation angle antenna to star azimuth information, and it is consistent with satellite direction according to the information obtaining, to adjust ultrasonic distance measuring module signal transmit direction;
Step 3) environmental monitoring: it is known that ultrasonic distance measuring module utilizes the aerial propagation velocity of ultrasonic wave, measure sound wave and after transmitting, run into the time that barrier reflects, according to the time difference transmitting and receiving to whether existing shelter to judge on satellite channel; Actinometer is the radiation on certain frequency by some composition in reception atmosphere 940nm water vapor absorption passage, through being converted to the meteorological element of atmosphere in vertical and horizontal direction, distributes;
Step 4) data processing: the data message that data processing main frame returns according to ultrasonic distance measuring module and actinometer is analyzed satellite channel environment, if exist shelter or weather condition to be unfavorable for signal transmission on judgement satellite channel, by alarm indicating module to operator sound, light alarm prompt.
Satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention, a kind of satellite-signal channel environment detector based on actinometer and ultrasonic measuring distance technology is provided, with helping technical staff, to satellite-signal transmission channel, whether exist shelter to judge, and by site " steam " index, local weather environment is judged.
The present invention has the following advantages and good effect:
The present invention is based on the basis of prior art, mode by range finding and " steam " monitoring is monitored satellite-signal transmission channel environment, help operating personnel to judge more accurately satellite-signal transmission environment, accident analysis, processing time when satellite link cannot be set up have been reduced, alert is according to circumstances adjusted the position of satellite car effectively, improves troubleshooting efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention.
Fig. 2 is the monitoring method flow chart based on the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, satellite-signal channel environment monitoring system and the method based on radiometer and rangefinder provided by the invention is elaborated.
As shown in Figure 1, the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention comprises: ultrasonic distance measuring module 1, actinometer 2, data processing main frame 3 and alarm display module 4; Wherein: ultrasonic distance measuring module 1 is supersonic range finder, it is connected with data processing main frame 3, for detection of satellite antenna to the distance between barrier; Actinometer 2 is intensity of solar radiation checkout gear, and it is connected with data processing main frame 3; Information for detection of solar radiation intensity; Detection control and data processing core that data processing main frame 3 is native system, it is connected with the antenna servo device 5 in logical antenna control system in ground; Alarm indicating module 4 is alarm signal output device, and it is connected with data processing main frame 3, for sending sound and light alarm signal according to the instruction of data processing main frame 3.
Described ultrasonic distance measuring module 1 is comprised of ultrasonic transmitter and ultrasonic receiver; Ultrasonic transmitter is launched ultrasonic wave to a direction, starts timing in x time, and ultrasonic wave is propagated in air, encounters barrier and just return immediately in way, and ultrasonic receiver receives that reflected wave just stops timing immediately; The aerial propagation velocity of ultrasonic wave is 340m/s, according to the time t of timer record, just can calculate launch point apart from the distance (s) of barrier, that is: s=340t/2; There is shelter in explanation when ultrasonic distance measuring module 1 receives the reflected wave reflecting on satellite-signal transmission path, illustrates and on satellite-signal transmission path, do not have shelter when module cannot receive reflected wave.
Described actinometer 2 is determined solar irradiance signal by measuring Water Vapor Content, because the steam in atmosphere is to produce one of principal element of attenuation in satellite-signal transmitting procedure, foundation impact on satellite channel is great, therefore moisture content can be used as the index of satellite channel environmental monitoring, is used for judging the whether suitable signal transmission of channel environment;
Actinometer is a kind of portable instrument, utilizes its 940nm water vapor absorption passage can measure large gas column steam total amount; Near the direct solar radiation signal that actinometer records absorption band of water vapor 936nm is not deferred to Beer law.According to Bruegge and Halthore research, water vapor transmittance can be simulated with two parameter expressions:
Tw＝exp(-awb) (1)
Wherein, Tw be with on steam mean transmissivity, w is the oblique journey steam of air path total amount, a and b are constants, under given atmospheric conditions, they are relevant with wavelength location, width and the shape of actinometer 936nm channel filter, also relevant with the vertical distribution of temperature and pressure lapse rate in atmosphere and steam, and its value is determined by radiation transfer equation simulation.
At 936nm absorption band of water vapor, actinometer centre wavelength can be expressed as the response of the straight radiant illumination of the sun:
V＝V0R2*exp[-nτ]*Tw (2)
Wherein v is actinometer output voltage, and v0 is the output of atmosphere external voltage, and R is solar distance correcting value, and m is relative air quality, and Tw is steam mean transmissivity, and τ is Rayleigh scattering and aerosol diffuse optical thickness.Rayleigh diffuse optical thickness is pressed and is calculated by surface air.Oblique journey vapour quantity w=m*PW, PW is vertical steam post total amount.Formula (1) substitution formula (2) both sides are taken the logarithm:
lnV+mτ＝ln(V0R-2)-a*mb*PWb (3)
Under stable and cloudless atmospheric conditions, take mb value as x axle, take the above formula left side as Y-axis picture straight line, the slope of straight line is-a*PWb that Y-axis intercept is ln (V0R-2).Because Langley method is to make x axle with m value, so claim to improve Langley method.
Described data processing main frame 3 is for being responsible for data processing and the signal feedback function of whole supervisory control system, for antenna servo device 5, ultrasonic distance measuring module 1, actinometer 2 and alarm indicating module 4, set up respectively corresponding data port, and the information of passing through reception antenna server 5 is controlled the sensing of ultrasonic distance measuring module 1, by the reception ultrasonic wave module in ultrasonic distance measuring module 1 and actinometer 2 feedback informations, channel environment is judged, and alarm indicating module 4 is sent to command adapted thereto.
As shown in Figure 2, the satellite communication transmission channel environment method for supervising based on the satellite-signal channel environment monitoring system based on radiometer and rangefinder provided by the invention comprises the following steps:
Step 1) device initialize: opening device power supply, system are carried out self check, and establish a communications link with antenna servo device 5 data-interfaces in communication in moving automatic tracking system;
Step 2) ultrasonic distance measuring module orientation adjustment: ultrasonic distance measuring module 1 from antenna servo device 5 data-interfaces, obtain comprise orientation, the elevation angle antenna to star azimuth information, and according to the information obtaining adjust ultrasonic distance measuring module 1 signal transmitting and receive direction consistent with satellite direction;
Step 3) environmental monitoring: it is known that ultrasonic distance measuring module 1 utilizes the aerial propagation velocity of ultrasonic wave, measure sound wave and after transmitting, run into the time that barrier reflects, according to the time difference transmitting and receiving to whether existing shelter to judge on satellite channel; Actinometer 2 is the radiation on certain frequency by some composition in reception atmosphere 940nm water vapor absorption passage, through being converted to the meteorological element of atmosphere in vertical and horizontal direction, distributes;
Step 4) data processing: the data message that data processing main frame 3 returns according to ultrasonic distance measuring module 1 and actinometer 2 is analyzed satellite channel environment.If exist shelter or weather condition to be unfavorable for signal transmission on judgement satellite channel, by alarm indicating module 4 to operator sound, light alarm prompt.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique; without departing from the spirit and scope of the present invention; can also make various conversion or modification, therefore all technical schemes that are equal to, all fall into protection scope of the present invention.
Claims (3)
1. the satellite-signal channel environment monitoring system based on radiometer and rangefinder, is characterized in that: described system comprises: ultrasonic distance measuring module (1), actinometer (2), data processing main frame (3) and alarm display module (4); Wherein: ultrasonic distance measuring module (1) is supersonic range finder, it is connected with data processing main frame (3); Actinometer (2) is intensity of solar radiation checkout gear, and it is connected with data processing main frame (3); Detection control and data processing core that data processing main frame (3) is native system, its with in antenna servo device (5) in logical antenna control system be connected; Alarm indicating module (4) is alarm signal output device, and it is connected with data processing main frame (3).
2. the satellite-signal channel environment monitoring system based on radiometer and rangefinder according to claim 1, is characterized in that: described ultrasonic distance measuring module (1) is comprised of ultrasonic transmitter and ultrasonic receiver.
3. a monitoring method for the satellite-signal channel environment monitoring system based on radiometer and rangefinder claimed in claim 1, is characterized in that: described method comprises the following steps:
Step 1) device initialize: opening device power supply, system are carried out self check, and establish a communications link with antenna servo device (5) data-interface in communication in moving automatic tracking system;
Step 2) ultrasonic distance measuring module orientation adjustment: data processing main frame (3 from antenna servo device (5) data-interface, obtain comprise orientation, the elevation angle antenna to star azimuth information, and it is consistent with satellite direction according to the information obtaining, to adjust ultrasonic distance measuring module (1) signal transmit direction;
Step 3) environmental monitoring: it is known that ultrasonic distance measuring module 1 utilizes the aerial propagation velocity of ultrasonic wave, measure sound wave and after transmitting, run into the time that barrier reflects, according to the time difference transmitting and receiving to whether existing shelter to judge on satellite channel; Actinometer is the radiation on certain frequency by some composition in reception atmosphere 940nm water vapor absorption passage, through being converted to the meteorological element of atmosphere in vertical and horizontal direction, distributes;
Step 4) data processing: the data message that data processing main frame (3) returns according to ultrasonic distance measuring module (1) and actinometer (2) is analyzed satellite channel environment, if exist shelter or weather condition to be unfavorable for signal transmission on judgement satellite channel, by alarm indicating module (4) to operator sound, light alarm prompt.
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| CN113544548A (en) * | 2019-03-06 | 2021-10-22 | 古野电气株式会社 | Cloud observation device, cloud observation method, and program |
| CN115542823A (en) * | 2022-11-25 | 2022-12-30 | 北京布局未来教育科技有限公司 | Satellite monitoring control circuit |
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Application publication date: 20140813 |