CN101594130B - Slope frequency detection mode based pulse wireless low jitter transmission method - Google Patents
Slope frequency detection mode based pulse wireless low jitter transmission method Download PDFInfo
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- CN101594130B CN101594130B CN2009100745850A CN200910074585A CN101594130B CN 101594130 B CN101594130 B CN 101594130B CN 2009100745850 A CN2009100745850 A CN 2009100745850A CN 200910074585 A CN200910074585 A CN 200910074585A CN 101594130 B CN101594130 B CN 101594130B
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Abstract
The invention relates to a slope frequency detection mode based pulse wireless low jitter transmission method in the field of the pulse wireless transmission communication, which is particularly applied to the wireless low jitter transmission of radar pulse. The method comprises the following steps: performing pulse shaping and pre-emphasis of a transmitting end, and carrying out modulation steps of a PLL circuit, such as wideband frequency-modulation and the like; carrying out demodulation steps of a receiving end, such as limiting amplification, a frequency detection circuit, signal decision and the like; and finally outputting a low jitter pulse signal. The method has the advantages of better recovering the pulse of the transmitting end, having low requirements on a clock of a system, overcoming certain frequency deviation in the system transmission due to high linearity of the lope frequency detection of a staggered pair, and simultaneously reducing the difficulty on the demodulation design.
Description
Technical field
The present invention relates to a kind of pulse wireless low jitter transmission method in the pulse wireless transport communication field, be specially adapted to the wireless low jitter transmission of radar pulse based on slope frequency detection mode.
Background technology
Pulse wireless transmission technology commonly used adopts digital form; Can judge having or not of pulse signal accurately at receiving terminal; But the shake of the before and after edge of the pulse signal that receives is bigger; When the before and after edge shake of wireless pulses transmission was made a further demand, this method commonly used had been difficult to solve.
Summary of the invention
Technical problem to be solved by this invention is to avoid the weak point in the above-mentioned background and a kind of pulse wireless low jitter transmission method based on slope frequency detection mode is provided.The present invention also adopts pulse signal to the Wideband FM Technique that the PLL circuit carries out, and is convenient to the demodulation of the low jitter pulse of slope frequency detection mode.The inventive method core component adopts homemade components and parts, and parts selection is easy, and debugging difficulty is low, realizes the wireless transmission of pulse jitter≤10ns easily.
The objective of the invention is to realize like this, it comprises step:
1) transmitted pulse gets into modulating unit, carries out shaping pulse, and the pulse distortion in the Wireline transmission is corrected;
2) with the shaped pulse signal preemphasis, the high fdrequency component of paired pulses is stressed, strengthens the transmittability of high fdrequency component;
3) pulse signal of preemphasis gets into the PLL phase lock circuitry, and the PLL circuit is carried out WBFM;
4) the WBFM signal gets into radio frequency unit, and FM signal is carried out up-conversion, power amplification, gets into wireless channel through antenna;
5) antenna of radio frequency unit receives the WBFM signal in the wireless channel, through low noise amplification, down-conversion, the band FM signal of agc circuit output on IF-FRE.
6) the WBFM signal gets into demodulating unit, amplifies through amplitude limit, and it is identical to be divided into amplitude to pulse WBFM signal, the two paths of signals that the phase phasic difference is 180 °;
7) the two-way amplitude is identical, and the pulse WBFM signal that the phase phasic difference is 180 ° at first becomes the FMAM ripple to pulse WBFM signal through two off resonance loops slope detection detecting circuit, through envelope detection circuit, demodulates low jitter spike signal then;
8) low jitter spike signal is finally exported the low jitter pulse signal through judgement;
The transmission of completion pulse wireless low jitter.
The present invention compares with background technology, and having has advantage as follows:
1) the pulse wireless transmission method of the present invention's proposition is compared with the pulse wireless transmission of the digital form of using always, has guaranteed the special applications of pulse edge low jitter in the pulse wireless transmission.The pulse wireless transmission method of digital form commonly used; When emphasis transmission pulse level, the shake on paired pulses edge proposed the 10ns requirement, the clock of digital sample need be brought up to the level of GHz; Fully sample in the edge of ability paired pulses; The clock of system is realized difficulty like this, and expense is very high, and high sample rate has increased the design difficulty of modulation.The pulse wireless transmission method that the present invention proposes; Based on slope frequency detection mode; The form of this analog circuit can be good at recovering to make a start pulse; Clock in the system is less demanding, and the high linearity of two off resonances loop slope detection can also overcome frequency deviation certain in the system transmissions, has reduced the difficulty of modulation design simultaneously.
2) the inventive method core component adopts homemade components and parts, and parts selection is easy, and debugging difficulty is low, realizes the wireless transmission of pulse jitter≤10ns easily.
Description of drawings
Fig. 1 is the electric functional-block diagram of the wired side signal of the present invention to wireless side inter-process embodiment.
Fig. 2 is the electric functional-block diagram of wireless side signal of the present invention to wired side inter-process embodiment.
1 is the shaping pulse module among Fig. 1, and 2 is the pre-emphasis pulse module, and 3 is the pulse-frequency modulation module, and 4 is the radio frequency unit module, and wherein radio frequency unit module 4 generally comprises parts such as up-conversion, power amplification, antenna.
5 is the radio frequency unit module among Fig. 2, and 6 is the amplitude limit amplification module, and 7 is frequency discrimination detection module, and 8 are the pulse judging module, and wherein radio frequency unit module 5 generally comprises parts such as antenna, low noise amplification, down-conversion, AGC.
Embodiment
Referring to figs. 1 through Fig. 2.Fig. 1 is the electric functional-block diagram of the wired side signal of the present invention to wireless side inter-process embodiment; It comprises shaping pulse module 1, pre-emphasis pulse module 2, pulse-frequency modulation module 3; Radio frequency unit module 4; Wherein shaping pulse module 1, pre-emphasis pulse module 2, pulse-frequency modulation module 3 constitutes modulating unit.1 pair of input pulse of at first shaping pulse module carries out shaping; Pulse distortion in the circuit transmission is corrected; Pre-emphasis pulse module 2 paired pulses carry out high frequency emphasis then; Pulse signal gets into pulse-frequency modulation module 3, accomplishes the WBFM that pulse signal carries out the PLL circuit, and FM signal becomes radiofrequency signal through radio frequency unit module 4 and gets into wireless transmission.
Fig. 2 is the electric functional-block diagram of wireless side signal of the present invention to wired side inter-process embodiment, and it comprises radio frequency unit module 5, amplitude limit amplification module 6; Frequency discrimination detection module 7, pulse judging module 8, wherein the amplitude limit amplification module 6; Frequency discrimination detection module 7, pulse judging module 8 constitutes demodulating unit.At first wireless signal transmission becomes intermediate frequency WBFM signal through radio frequency unit module 5; The WBFM signal gets into amplitude limit amplification module 6; Amplitude limit amplification module output two-way amplitude same phase differs 180 ° FM signal, gets into slope detection module 7 then, and slope detection module 7 demodulates low jitter spike signal; Low jitter spike signal is finally exported the low jitter pulse through pulse judging module 8.
The signal transmission of technical scheme of the present invention is carried out according to the following steps:
1) transmitted pulse gets into modulating unit, carries out shaping pulse, and the pulse distortion in the Wireline transmission is corrected, and embodiment is accomplished by the shaping pulse module 1 among Fig. 1;
2) with the shaped pulse signal preemphasis, the high fdrequency component of paired pulses is stressed, strengthens the transmittability of high fdrequency component, and embodiment is accomplished by the pre-emphasis pulse module 2 among Fig. 1;
3) pulse signal of preemphasis gets into the PLL phase lock circuitry, and the PLL circuit is carried out WBFM, and embodiment is accomplished by the pulse-frequency modulation module 3 among Fig. 1;
4) the WBFM signal gets into radio frequency unit, and FM signal is carried out up-conversion, power amplification, gets into wireless channel through antenna, and embodiment is accomplished by the radio frequency unit module 4 among Fig. 1;
5) antenna of radio frequency unit receives the WBFM signal in the wireless channel, and through the band FM signal of circuit such as low noise amplification, down-conversion, AGC output on IF-FRE, embodiment is accomplished by the radio frequency unit module 5 among Fig. 2;
6) the WBFM signal gets into demodulating unit, amplifies through amplitude limit, and it is identical to be divided into amplitude to pulse WBFM signal, the two paths of signals that the phase phasic difference is 180 °, and embodiment is accomplished by the amplitude limit amplification module 6 among Fig. 2;
7) the two-way amplitude is identical; The pulse WBFM signal that the phase phasic difference is 180 ° is through two off resonance loops slope detection detecting circuit; At first become the FMAM ripple to pulse WBFM signal; Through envelope detection circuit, demodulate low jitter spike signal then, embodiment is accomplished by the frequency discrimination detection module 7 among Fig. 2;
8) low jitter spike signal is finally exported the low jitter pulse signal through judgement, and embodiment is accomplished by Fig. 2 pulse judging module 8.
Claims (1)
1. pulse wireless low jitter transmission method based on slope frequency detection mode is characterized in that comprising step:
1) transmitted pulse gets into modulating unit, carries out shaping pulse, and the pulse distortion in the Wireline transmission is corrected;
2) with the shaped pulse signal preemphasis, the high fdrequency component of paired pulses is stressed, strengthens the transmittability of high fdrequency component;
3) pulse signal of preemphasis gets into the PLL phase lock circuitry, and the PLL circuit is carried out WBFM;
4) the WBFM signal gets into radio frequency unit, and FM signal is carried out up-conversion, power amplification, gets into wireless channel through antenna;
5) antenna of radio frequency unit receives the WBFM signal in the wireless channel, through low noise amplification, down-conversion, the WBFM signal of agc circuit output on IF-FRE;
6) the WBFM signal gets into demodulating unit, amplifies through amplitude limit, and it is identical to be divided into amplitude to pulse WBFM signal, the two paths of signals that the phase phasic difference is 180 °;
7) the two-way amplitude is identical, and the pulse WBFM signal that the phase phasic difference is 180 ° at first becomes the FMAM ripple to pulse WBFM signal through two off resonance loops slope detection detecting circuit, through envelope detection circuit, demodulates low jitter spike signal then;
8) low jitter spike signal is finally exported the low jitter pulse signal through judgement;
The transmission of completion pulse wireless low jitter.
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| CN101594130B true CN101594130B (en) | 2012-05-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102684653B (en) * | 2012-05-29 | 2015-07-01 | 中国电子科技集团公司第五十四研究所 | Digital synchronous pulse wireless low-jitter transmission method |
| CN102820872A (en) * | 2012-08-27 | 2012-12-12 | 中国电子科技集团公司第五十四研究所 | Wireless low-jitter transmission method for digital asynchronous pulse |
| CN103986565B (en) * | 2014-06-06 | 2017-05-24 | 中国电子科技集团公司第五十四研究所 | Wireless low-jitter transmission method of clock signal |
| CN105071790B (en) * | 2015-07-20 | 2017-10-31 | 中国工程物理研究院流体物理研究所 | High-voltage pulse forward position sharpening device and its assemble method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257349A (en) * | 1998-11-18 | 2000-06-21 | 日本电气株式会社 | Low dither data transmission device |
| CN1534618A (en) * | 2003-03-31 | 2004-10-06 | 上海乐金广电电子有限公司 | Dither signal detecting device in dither phase synchronous locking phase loop and method thereof |
| CN101065900A (en) * | 2004-11-26 | 2007-10-31 | 皇家飞利浦电子股份有限公司 | Jitter reduction circuit and frequency synthesizer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257349A (en) * | 1998-11-18 | 2000-06-21 | 日本电气株式会社 | Low dither data transmission device |
| CN1534618A (en) * | 2003-03-31 | 2004-10-06 | 上海乐金广电电子有限公司 | Dither signal detecting device in dither phase synchronous locking phase loop and method thereof |
| CN101065900A (en) * | 2004-11-26 | 2007-10-31 | 皇家飞利浦电子股份有限公司 | Jitter reduction circuit and frequency synthesizer |
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