Modeling of Range Accuracy for a Radar System Driven by a Noisy Phase-Locked Loop

被引：0
作者：
Herzel, Frank [1 ]
Ng, Herman Jalli [1 ]
Kissinger, Dietmar [1 ,2 ]
机构：
[1] IHP, Technol Pk 25, D-15236 Frankfurt, Germany
[2] Tech Univ Berlin, Einsteinufer 17, D-10587 Berlin, Germany
来源：
2017 47TH EUROPEAN MICROWAVE CONFERENCE (EUMC) | 2017年
关键词：
radar; FMCW; phase noise; range accuracy; phase-locked loop; FREQUENCY RAMP GENERATOR; FRACTIONAL-N PLL; FMCW;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We derive analytical expressions for the standard deviations of distance error and angular error in a radar system due to PLL phase noise. The standard deviation of the distance error sigma(R) is expressed as a function of the target distance R and the PLL phase noise spectrum. If the IF radar signal and noise bandwidth are within the in-band phase noise plateau, the proportionality sigma(R) proportional to R-3/2 is valid. By contrast, if signal and noise bandwidth are in the VCO dominated -6dB/octave region of the PLL spectrum, we obtain sigma(R) proportional to R. The results are compared with measurements on a 61GHz and a 122GHz FMCW radar system.
引用
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页码：1369 / 1372
页数：4
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