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http://dx.doi.org/10.5515/KJKIEES.2010.21.10.1085

Design of Multiple Filter for Reducing Received Signal Fluctuation in FMCW Radar Altimeter  

Kim, Sei-Yoon (PGM R&D Lab., LIG Nex1 Co., Ltd.)
Lee, Ho-Jun (PGM R&D Lab., LIG Nex1 Co., Ltd.)
Hyun, Young-Oh (Agency for Defense Development)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.10, 2010 , pp. 1085-1093 More about this Journal
Abstract
This paper proposes a multiple filter for reduction of received signal fluctuation and enhancement of step altitude edge detection in FMCW radar altimeter. The proposed filter was composed of alpha-trimmed mean filter, frequency variation limiter, and 1/3 order static filter. Simulations by analysis of received signal show that the proposed filter provides better performance than moving average and standard median filters with error reduction. In particular, the proposed filter was improved in the ability of reducing fluctuation for ground hovering.
Keywords
Radar Altimeter; FMCW; Signal Fluctuation; Trimmed Mean Filter; Median Filter;
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