Method for estimating wide-band harmonic phase and its indeterminacy based on NTN calibration

A phase and harmonic technology, applied in baseband system components, analog/digital conversion calibration/test, phase modulation carrier system, etc., can solve the problem of inability to accurately obtain broadband harmonic phase, and achieve the effect of robust estimation
CN1937429AInactive Publication Date: 2007-03-28HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2007-03-28
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a digital signal processing method. The method solves the problem of unable to obtain the accurate wideband harmonic phase by using the existed technique. Based on the NTN correct technique, this invention obtains a serious wideband impulses, corrects orderly their time base aberration, uses average signal shift to eliminate co-modulate interference, corrects mismatch aberration, and signal dithering. Then phase-spreading and eliminating linearization against the obtained phase frequency response function obtains the harmonic phase. Finally, the phase uncertainty can be obtained by means of introducing the error spread formulation and assumption verification estimation in the complex frequency area. The wideband phase obtained by this invention can be used in the phase correction in large-signal network analyzer and hi-speed sampling oscilloscope.
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Description

technical field

[0001] The invention relates to a digital signal processing method, in particular to an accurate and robust estimation method of broadband harmonic phase and its uncertainty based on NTN calibration technology. Background technique

[0002] Ultra-Wideband communication technology (Ultra-Wideband, UWB) has been a hot spot in the industry in recent years. It communicates by modulating information onto narrow pulses of nanosecond or picosecond duration. Because the pulse is very narrow, it occupies a frequency bandwidth of several GHz on the spectrum. Compared with classical radar, the pulse signal radiated by Ultra Wideband UWB radar occupies a very wide frequency band relative to the center carrier frequency, and the bandwidth ranges from more than 10% to 90%. Such UWB signals excite natural resonances in target structures, making it difficult for classical stealth techniques to camouflage targets. Developed countries are now studying ultra-wideband (UWB) r...

Claims

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