CN202455339U - Digital intermediate-frequency detection system of universal L-band receiving module - Google Patents
Digital intermediate-frequency detection system of universal L-band receiving module Download PDFInfo
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- CN202455339U CN202455339U CN2011205584294U CN201120558429U CN202455339U CN 202455339 U CN202455339 U CN 202455339U CN 2011205584294 U CN2011205584294 U CN 2011205584294U CN 201120558429 U CN201120558429 U CN 201120558429U CN 202455339 U CN202455339 U CN 202455339U
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Abstract
The utility model is applicable to the field of digital communication, and provides a digital intermediate-frequency detection system of a universal L-band receiving module. The digital intermediate-frequency detection system comprises a computation unit, a spectral analysis unit and a digital intermediate-frequency detection box connected with the computation unit and the spectral analysis unit, and the digital intermediate-frequency detection box consists of an LVDS (low voltage differential signaling) digital signal conversion unit, a digital signal processing unit, a crystal oscillator and a DA (digital-analog) conversion unit. The amplitude of analog intermediate-frequency signals and the quality of digital intermediate-frequency signals which are outputted by the universal L-band receiving module are detected, accordingly, whether the digital intermediate-frequency signals of the receiving module meet requirements of indexes or not can be determined in a receiving module debugging initial stage, debugging time is greatly shortened, further, the problem of abnormal operation of an integral machine due to disqualification of the quality of the digital intermediate-frequency signals during joint test of the integral machine in an outer field can be avoided, and efficiency is greatly improved.
Description
Technical field
the utility model belongs to digital communicating field, relates in particular to the digital intermediate frequency detection system of the general receiver module of a kind of L-band.
Background technology
The general receiver module radio frequency input of
L-band frequency is many, and in the total temperature scope, output accuracy, demand on signal quality to the digital medium-frequency signal after the down-conversion during small-signal are very high.The digital intermediate frequency detection of the general receiver module of L-band is related to last digital intermediate frequency output and whether satisfies index request, yet at the debugging initial stage, owing to do not have relevant testing hardware and software; And RF spot is more; Can't the digital medium-frequency signal of the general receiver module of L-band be detected, often have only through outfield complete machine joint-trial to find whether digital medium-frequency signal satisfies index request, if find the requirement of the discontented toe mark of the digital medium-frequency signal of module; Again module is reprocessed; Not only wasted great amount of time and manpower, whether just can be in proper working order after can't determination module reprocessing, cause inefficiency.
The utility model content
The purpose of
the utility model is: the digital intermediate frequency detection system of the general receiver module of a kind of L-band is provided, is intended to solve the aforementioned problems in the prior.
The purpose of the utility model is achieved in that
The digital intermediate frequency detection system of
general receiver module of a kind of L-band; Said system comprises computing unit, spectral analysis unit; And the digital intermediate frequency that all is connected with these two unit detects box, and said digital intermediate frequency detects box and comprises LVDS digital signal conversion unit, digital signal processing unit, crystal oscillator and DA converter unit; Said computing unit is used for the general receiver module of L-band is configured to normal operating conditions, and the quality of the digital medium-frequency signal of said digital signal processing unit output is detected; Said LVDS digital signal conversion unit is used for the LVDS high speed serialization digital medium-frequency signal of the general receiver module output of L-band is locked, and converts parallel digital signal into; Said digital signal processing unit is used for LVDS digital signal conversion configuration of cells in accepting state, and the parallel digital signal of LVDS digital signal conversion unit output is gathered and data processing; Said DA converter unit is used for the digital signal of digital signal processing unit output is carried out digital-to-analogue conversion; Said spectral analysis unit is used for the amplitude of the analog if signal of DA converter unit output is detected; Said crystal oscillator is used to digital signal processing unit clock signal is provided.
said digital intermediate frequency detects box and also comprises the computing amplifying unit, be used for the analog if signal of DA converter unit output is carried out processing and amplifying, and the signal after will amplifying exports said spectral analysis unit to.
Whether
said spectral analysis unit specifically is used for the analog if signal of the analog if signal of the general receiver module output of L-band and the output of DA converter unit is analyzed contrast, come the amplitude of detection signal correct.
Whether the waveform that
said computing unit specifically is used to detect the digital medium-frequency signal of said digital signal processing unit output mate, smoothly, continuously, and whether have burr, distortion.
The outstanding advantage of
the utility model is: the utility model is through the amplitude of the analog if signal of the general receiver module output of detection L-band and the quality of digital medium-frequency signal; Thereby at the receiver module debugging initial stage; Whether the digital medium-frequency signal that just can confirm receiver module satisfies index request; Reduce debug time greatly; In the time of also can avoiding simultaneously in the outfield complete machine joint-trial, factor word intermediate-freuqncy signal is off quality to cause complete machine work undesired, has improved efficient greatly.
Description of drawings
Fig. 1 is the formation sketch map of the digital intermediate frequency detection system of the general receiver module of L-band that provides of an embodiment of the utility model;
Fig. 2 is the formation sketch map of the digital intermediate frequency detection system of the general receiver module of L-band that provides of another embodiment of the utility model.
Embodiment
, are further elaborated to the utility model below in conjunction with accompanying drawing and embodiment for purpose, technical scheme and the advantage that makes the utility model is clearer.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the formation of the digital intermediate frequency detection system of the general receiver module of L-band that the embodiment of the utility model provides.
said system comprises computing unit, spectral analysis unit; And the digital intermediate frequency that all is connected with these two unit detects box; In the utility model embodiment, said digital intermediate frequency detects box and comprises LVDS digital signal conversion unit, digital signal processing unit, crystal oscillator and digital-to-analogue (DA) converter unit.
When
are detected; Radio-frequency signal source and clock source are inserted the general receiver module of L-band; Be respectively receiver module required radiofrequency signal of work and clock signal are provided; Through computing unit the general receiver module of L-band is configured, lets receiver module get into normal operating conditions, the general receiver module of L-band will be exported analog if signal and LVDS high speed serialization digital medium-frequency signal.
through digital signal processing unit with LVDS digital signal conversion configuration of cells in accepting state; LVDS digital signal conversion unit locks the LVDS high speed serialization digital medium-frequency signal of the general receiver module output of L-band; And converting parallel digital signal output into, digital signal processing unit is gathered this parallel digital signal, and the data that collect are carried out data processing; Reduce by the digital signal of computing unit after to this processing; And whether the analysis and judgement signal quality is normal, for example judges whether waveform matees, smoothly, continuously, whether has burr, distortion etc.
simultaneously; Digital signal after digital signal processing unit is handled is carried out digital-to-analogue conversion through the DA converter unit; Convert digital medium-frequency signal into analog if signal; By spectral analysis unit the analog if signal of the general receiver module output of L-band and the analog if signal of DA converter unit output are analyzed contrast, judge whether the amplitude of digital medium-frequency signal is correct.In the utility model embodiment; The DA converter unit carries out will can not changing in the process of digital-to-analogue conversion the amplitude of signal; But can satisfy the DA converter unit of this requirement, it is embodied as higher, therefore in another embodiment of the utility model; As shown in Figure 2; Above-mentioned digital intermediate frequency detects box and also comprises the computing amplifying unit, and the signal after the DA converter unit carries out digital-to-analogue conversion carries out processing and amplifying through the computing amplifying unit again, thereby makes the signal amplitude after the amplification reach the preceding signal amplitude of DA conversion.In the above-mentioned course of work, detecting the built-in crystal oscillator of box by digital intermediate frequency is that digital signal processing unit provides clock signal.
The digital intermediate frequency detection system of the general receiver module of L-band that
the utility model provides combines computing unit, spectral analysis unit and digital intermediate frequency to detect box; The amplitude of the analog if signal through detecting the general receiver module output of L-band and the quality of digital medium-frequency signal; Thereby at the receiver module debugging initial stage; Whether the digital medium-frequency signal that just can confirm receiver module satisfies index request, reduces debug time greatly, in the time of also can avoiding simultaneously in the outfield complete machine joint-trial; Factor word intermediate-freuqncy signal is off quality to cause complete machine work undesired, has improved efficient greatly.The utility model can be realized the detection to the quality and the amplitude of the output of the digital medium-frequency signal of the full frequency band of each temperature section of the general receiver module of L-band, various bandwidth.Detect through experiment, the digital medium-frequency signal that detects the general receiver module of L-band after handling through said system satisfies index request fully.
the above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (4)
1. the digital intermediate frequency detection system of the general receiver module of L-band; It is characterized in that; Said system comprises computing unit, spectral analysis unit; And the digital intermediate frequency that all is connected with these two unit detects box, and said digital intermediate frequency detects box and comprises LVDS digital signal conversion unit, digital signal processing unit, crystal oscillator and DA converter unit; Said computing unit is used for the general receiver module of L-band is configured to normal operating conditions, and the quality of the digital medium-frequency signal of said digital signal processing unit output is detected; Said LVDS digital signal conversion unit is used for the LVDS high speed serialization digital medium-frequency signal of the general receiver module output of L-band is locked, and converts parallel digital signal into; Said digital signal processing unit is used for LVDS digital signal conversion configuration of cells in accepting state, and the parallel digital signal of LVDS digital signal conversion unit output is gathered and data processing; Said DA converter unit is used for the digital signal of digital signal processing unit output is carried out digital-to-analogue conversion; Said spectral analysis unit is used for the amplitude of the analog if signal of DA converter unit output is detected; Said crystal oscillator is used to digital signal processing unit clock signal is provided.
2. the digital intermediate frequency detection system of the general receiver module of L-band as claimed in claim 1; It is characterized in that; Said digital intermediate frequency detects box and also comprises the computing amplifying unit; Be used for the analog if signal of DA converter unit output is carried out processing and amplifying, and the signal after will amplifying exports said spectral analysis unit to.
3. the digital intermediate frequency detection system of the general receiver module of L-band as claimed in claim 1; It is characterized in that; Whether said spectral analysis unit specifically is used for the analog if signal of the analog if signal of the general receiver module output of L-band and the output of DA converter unit is analyzed contrast, come the amplitude of detection signal correct.
4. the digital intermediate frequency detection system of the general receiver module of L-band as claimed in claim 1; It is characterized in that; Whether the waveform that said computing unit specifically is used to detect the digital medium-frequency signal of said digital signal processing unit output mate, smoothly, continuously, and whether have burr, distortion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205584294U CN202455339U (en) | 2011-12-28 | 2011-12-28 | Digital intermediate-frequency detection system of universal L-band receiving module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205584294U CN202455339U (en) | 2011-12-28 | 2011-12-28 | Digital intermediate-frequency detection system of universal L-band receiving module |
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| CN202455339U true CN202455339U (en) | 2012-09-26 |
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| CN2011205584294U Expired - Lifetime CN202455339U (en) | 2011-12-28 | 2011-12-28 | Digital intermediate-frequency detection system of universal L-band receiving module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973384A (en) * | 2014-05-21 | 2014-08-06 | 河北神舟卫星通信股份有限公司 | Dynamic satellite earth station carrier monitoring system |
-
2011
- 2011-12-28 CN CN2011205584294U patent/CN202455339U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973384A (en) * | 2014-05-21 | 2014-08-06 | 河北神舟卫星通信股份有限公司 | Dynamic satellite earth station carrier monitoring system |
| CN103973384B (en) * | 2014-05-21 | 2016-06-15 | 河北神舟卫星通信股份有限公司 | A kind of satellite earth station carrier wave dynamic monitoring system |
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Granted publication date: 20120926 |
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| CX01 | Expiry of patent term |