CN209072463U - A kind of parallel quick sampling radiometer reception device of broadband - Google Patents
A kind of parallel quick sampling radiometer reception device of broadband Download PDFInfo
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- CN209072463U CN209072463U CN201822102463.5U CN201822102463U CN209072463U CN 209072463 U CN209072463 U CN 209072463U CN 201822102463 U CN201822102463 U CN 201822102463U CN 209072463 U CN209072463 U CN 209072463U
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Abstract
A kind of parallel quick sampling radiometer reception device of broadband, comprising: the pre-processing module for amplifying the external radio-frequency signal of input；Signal for amplifying pre-processing module carries out the multichannel distribution module of Multi-way section output；The post-processing module that signal for exporting multichannel distribution module is filtered, gain controls；The detection module that signal for filtering post-processing module, after gain control carries out detection, generates audio signal；For sampling to audio signal, the digital collection module of digital signal is generated.The parallel quick sampling radiometer reception device of the broadband, can significantly improve radiometer to the sampling rate of external radio-frequency signal.
Description
[technical field]
The utility model relates to a kind of radiometer reception devices, and in particular to a kind of parallel quick sampling radiometer of broadband
Reception device.
[background technique]
Radiometer can the faint heat radiation energy of detecting objects body, to spy out the presence or absence of target, distance
The information such as far and near and shape size.The wide band radiation meter receiver for working in microwave or millimeter wave band, generallys use super
Heterodyne reception principle meets the requirement of broadband operation.It is formed and working principle is as shown in Figure 1.In Fig. 1, using mixing
Method carries out frequency-conversion processing to the external radiation signal of input.Wherein the tuning local oscillator of mixing can change under the control of outside
The frequency of local oscillator output signal, therefore the external radiation signal of different frequency can be made, and it is solid for exporting a frequency by mixing
The intermediate-freuqncy signal of definite value.Voltage signal by detection is converted to the bright temperature voltage data of quantization by digital sampling circuitry.
Although the above method can preferably solve broadband Receiver Problem, local oscillation signal when due to mixing can only be
Frequency point scanning output (i.e. synchronization can only export a local oscillator frequency point) one by one under the control of outside, thus the bright temperature of final output
Voltage signal also can only be frequency point, therefore the more suitable occasion for requiring sampling rate less harshness one at a time.And for
The very high occasion of requirement of real-time needs to develop the higher receiver for radiometer of sampling rate.
[utility model content]
To solve the above-mentioned problems, the utility model provides a kind of parallel quick sampling radiometer reception device of broadband,
Radiometer can be significantly improved to the sampling rate of external radiation signal.
The utility model is achieved through the following technical solutions, and is provided a kind of parallel quick sampling radiometer of broadband and is connect
Receiving apparatus, comprising:
Pre-processing module for amplifying the external radio-frequency signal of input；
Signal for amplifying pre-processing module carries out the multichannel distribution module of Multi-way section output；
The post-processing module that signal for exporting multichannel distribution module is filtered, gain controls；
The detection module that signal for filtering post-processing module, after gain control carries out detection, generates audio signal；
For sampling to audio signal, the digital collection module of digital signal is generated.
Particularly, the pre-processing module includes:
After the radiofrequency signal of input is mixed, generation intermediate-freuqncy signal and the mixing amplification module amplified；
The IF signal frequency for exporting mixing and externally input radiofrequency signal have the local oscillator of a fixed difference
Module.
Particularly, the post-processing module includes:
Signal for exporting multichannel distribution module is filtered the filter module of output；
Signal for exporting filter module carries out the gain control module of gain control.
The utility model provides a kind of parallel quick sampling radiometer reception device of broadband, will using multichannel distribution module
External radio-frequency signal is divided into multichannel (the multichannel distribution mould that radiometer needs how many working frequency points just to export using how many roads all the way
Block), it after being distributed by multichannel, is filtered respectively per signal all the way, gain control, detection and digital sample, it is such to connect
Processing mode is received, so that the external radiation signal of whole working frequency points generates final quantized output signal simultaneously, is not only realized
Broadband receives, and can greatly improve the sampling rate of radiometer.
[Detailed description of the invention]
Fig. 1 is the function structure chart of the prior art；
Fig. 2 is a kind of module knot of the parallel quick sampling radiometer reception device first embodiment of broadband of the utility model
Composition；
Fig. 3 is a kind of module knot of the parallel quick sampling radiometer reception device second embodiment of broadband of the utility model
Composition.
[specific embodiment]
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, following
The utility model is further described using 8 tunnels in embodiment.
Embodiment 1, the embodiment include mixing link:
Referring to Fig. 2, the utility model provides a kind of parallel quick sampling radiometer reception device of broadband, can will adopt
The sample time foreshortens to original 1/8, comprising:
The radiofrequency signal of input is mixed, intermediate-freuqncy signal is generated and the mixing amplification module amplified (is located before i.e.
Manage module) comprising: after being mixed the radiofrequency signal of input, generates intermediate-freuqncy signal and the mixing amplified is put
Big module 4, the IF signal frequency for exporting mixing and externally input radiofrequency signal have the local oscillator of a fixed difference
Module 5；
Intermediate-freuqncy signal for that will be mixed amplification module amplification carries out the multichannel distribution module 1 of 8 tunnels segmentation output；
Signal for exporting multichannel distribution module 1 is filtered, the ifd module of gain control (post-processes mould
Block) comprising: the signal for exporting multichannel distribution module 1 is filtered the filter module 6 of output, for that will filter mould
The signal that block 6 exports carries out the gain control module 7 of gain control；
The detection module that signal for filtering post-processing module, after gain control carries out detection, generates audio signal
2；
Audio signal for generating to detection module 2 samples, and generates the digital collection module 3 of digital signal.
Working principle:
The utility model provides a kind of method of parallel quick sampling radiometer reception device use mixing of broadband to defeated
The external radiation signal entered carries out frequency-conversion processing, local oscillator module 5 outputs one in pre-processing module (i.e. mixing amplification module)
The local oscillator output signal of a fixed frequency, therefore the IF signal frequency for being mixed output and externally input radiofrequency signal are with one
The difference of a fixation.After the distribution of 1 eight tunnel of multichannel distribution module, pass through filter module, gain control molding per signal all the way
Block, detection module, digital collection module be filtered respectively, gain control, detection and digital sample.
Filter module is used to divide the working frequency of each branch, limits detection bandwidth and avoid mutually in this embodiment
Interference；Gain control module (i.e. gain control circuit) in ifd module is for compensating under broadband condition of acceptance, due to preceding
Face is mixed the amplitude imbalance of detection input signal caused by the gain unevenness of amplifying element.Such reception processing mode, spoke
It penetrates meter and needs multichannel distribution module of how many working frequency points just using the output of how many roads, so that the external radiation of whole working frequency points
Signal generates final quantized output signal simultaneously.
The example structure compared with prior art, has the advantage that
1) it not only realizes that broadband receives, and the sampling time can be foreshortened to original 1/8, to greatly improve
The data transfer rate of radiometer.
2) the local oscillation signal frequency in amplification module (i.e. pre-processing module) is mixed without variation, and this also simplifies local oscillator dresses
The complexity set, reduces costs.
Embodiment 2, the embodiment do not include mixing link.
Referring to Fig. 3, the utility model provides a kind of parallel quick sampling radiometer reception device of broadband, can will adopt
The sample time foreshortens to original 1/8, comprising:
The radiofrequency signal of input is amplified to the amplification module (i.e. pre-processing module) for guaranteeing enough gains；
Intermediate-freuqncy signal for that will be mixed amplification module amplification carries out the multichannel distribution module 1 of eight tunnels segmentation output；
Signal for exporting multichannel distribution module 1 is filtered, the detection amplification module of gain control (post-processes
Module) comprising: the signal for exporting multichannel distribution module 1 is filtered the filter module 6 of output, for that will filter
The signal that module 6 exports carries out the gain control module 7 of gain control, for filtering post-processing module, after gain control
The detection module 2 that signal carries out detection, generates audio signal；
Audio signal for generating to detection module 2 samples, and generates the digital collection module 3 of digital signal.
Working principle:
Externally input radiofrequency signal pass through respectively amplification module (i.e. pre-processing module) and multichannel distribution module 1 amplification and
After the distribution of eight tunnels, per signal all the way by filter module, gain control module, detection module, digital collection module respectively into
Row filtering, gain control, detection and digital sample.
Filter module is used to divide the working frequency of each branch, limits detection bandwidth and avoid mutually in this embodiment
Interference；Module (i.e. gain control circuit) in detection amplification module (i.e. post-processing module) is for compensating broadband condition of acceptance
Under, amplify due to front filtering link gain it is uneven caused by detection input signal amplitude imbalance.Such receiving area
Reason mode, radiometer need multi-channel distribution device of how many working frequency points just using the output of how many roads, so that whole working frequency points
External radiation signal generate final quantized output signal simultaneously.
The example structure compared with prior art, has the advantage that
1) it not only realizes that broadband receives, and the sampling time is foreshortened into original 1/8, to greatly improve radiometer
Data transfer rate.
2) detection amplification module device directly carries out signal demodulator in corresponding external radiation signal frequency, therefore is not required to
It is mixed and local oscillator module, therefore simplifies the complexity of entire module, also reduce cost.
Claims (3)
1. a kind of parallel quick sampling radiometer reception device of broadband characterized by comprising
Pre-processing module for amplifying the external radio-frequency signal of input；
Signal for amplifying pre-processing module carries out the multichannel distribution module (1) of Multi-way section output；
The post-processing module that signal for exporting multichannel distribution module (1) is filtered, gain controls；
The detection module (2) that signal for filtering post-processing module, after gain control carries out detection, generates audio signal；
For sampling to audio signal, the digital collection module (3) of digital signal is generated.
2. the parallel quick sampling radiometer reception device of a kind of broadband according to claim 1, which is characterized in that described
Pre-processing module includes:
After the radiofrequency signal of input is mixed, generation intermediate-freuqncy signal and the mixing amplification module (4) amplified；
The IF signal frequency for exporting mixing and externally input radiofrequency signal have the local oscillator module of a fixed difference
(5)。
3. the parallel quick sampling radiometer reception device of a kind of broadband according to claim 1, which is characterized in that described
Post-processing module includes:
Signal for exporting multichannel distribution module (1) is filtered the filter module (6) of output；
Signal for exporting filter module (6) carries out the gain control module (7) of gain control.
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| CN201822102463.5U CN209072463U (en) | 2018-12-14 | 2018-12-14 | A kind of parallel quick sampling radiometer reception device of broadband |
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| CN201822102463.5U CN209072463U (en) | 2018-12-14 | 2018-12-14 | A kind of parallel quick sampling radiometer reception device of broadband |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450470A (en) * | 2018-12-14 | 2019-03-08 | 北方天穹信息技术（西安）有限公司 | A kind of parallel quick sampling radiometer reception device of broadband and method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450470A (en) * | 2018-12-14 | 2019-03-08 | 北方天穹信息技术（西安）有限公司 | A kind of parallel quick sampling radiometer reception device of broadband and method |
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