Concept and Implementation of a PLL-Controlled Interlaced Chirp Sequence Radar for Optimized Range-Doppler Measurements

Thurn K, Shmakov D, Li G, Max S, Meinecke MM, Vossiek M (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

IEEE Transactions on Microwave Theory and Techniques Institute of Electrical and Electronics Engineers (IEEE)

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Article Number: 7556357

Journal Issue: 99

DOI: 10.1109/TMTT.2016.2599875

Abstract

In this paper, we introduce a novel concept for frequency-modulated continuous-wave radar. The approach is based on an interlaced chirp sequence waveform, which is controlled by phase-locked loops (PLLs). The use of PLLs improves frequency chirp linearity and reduces phase noise compared with open-loop voltage-controlled oscillators commonly used to generate the fast chirps. In contrast to basic range-Doppler processing, it enables higher target velocities to be detected unambiguously at the same resolution, which makes it suitable for automotive applications. Separate frequency synthesizers generate the interlaced ramps in the system. An RF switch combines these two signals to suppress transients caused by oscillator overshoot and to avoid incoherencies due to programming times of the PLL ICs. We built a prototype radar system in K-band. The test results are promising and bode well for other applications.

Authors with CRIS profile

Karsten Thurn Lehrstuhl für Hochfrequenztechnik (LHFT) Martin Vossiek Lehrstuhl für Hochfrequenztechnik (LHFT)

Involved external institutions

Volkswagen AG DE Germany (DE) Valeo Schalter und Sensoren GmbH DE Germany (DE) Symeo GmbH DE Germany (DE)

How to cite

APA:

Thurn, K., Shmakov, D., Li, G., Max, S., Meinecke, M.-M., & Vossiek, M. (2016). Concept and Implementation of a PLL-Controlled Interlaced Chirp Sequence Radar for Optimized Range-Doppler Measurements. IEEE Transactions on Microwave Theory and Techniques, 99. https://doi.org/10.1109/TMTT.2016.2599875

MLA:

Thurn, Karsten, et al. "Concept and Implementation of a PLL-Controlled Interlaced Chirp Sequence Radar for Optimized Range-Doppler Measurements." IEEE Transactions on Microwave Theory and Techniques 99 (2016).

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