NDLI: A fixed IF 77-GHz FMCW radar sensor

Content Provider	IEEE Xplore Digital Library
Author	Haderer, A. Feger, R. Schrattenecker, J. Wagner, C. Stelzer, A.
Copyright Year	2008
Description	Author affiliation: Inst. f. Commun. & Inf. Eng., JKU, Linz (Haderer, A.; Schrattenecker, J.; Stelzer, A.)
Abstract	In this paper a 77-GHz FMCW radar with a fixed IF bandpass filter in conjunction with adjustable frequency slopes was presented. The used method allows retrieving the range profile without the need for fast digital signal processors (DSP) required to calculate the spectral contents of the received signal. Instead a fixed IF bandpass filter is implemented with an FIR filter, which is available in modern signal converters. Thus a simple microcontroller is sufficient to read out the estimated frequency bin and to set the slope of the frequency ramp to the desired values. This enables the presented sensor to be used in low-cost applications, without suffering from performance degradations compared to the conventional FMCW signal processor. The main drawback of the described method is the extended measurement time because $N_{s}$ ramps must be transmitted to obtain the range profile. Therefore, the concept is suitable for slowly moving targets only, requiring that the change in distance doesn't exceed the range resolution during one measurement cycle.
Starting Page	1
Ending Page	4
File Size	137862
Page Count	4
File Format	PDF
ISBN	9781424426416
DOI	10.1109/APMC.2008.4958268
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar Frequency estimation Band pass filters Signal processing Content based retrieval Digital signal processors Digital signal processing Finite impulse response filter Microcontrollers Degradation
Content Type	Text
Resource Type	Article

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