The Past

By G. White. 2000

503 citations recorded by the source corpus.

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Through wall imaging: Historical perspective and future directions (2008, unknown): “More sophisticated approaches extend beyond free-space assumptions to allow for more complicated propagation effects, such as adaptive optics [3], atmospheric correction for radar [1], and matched field processing for sonar [4].”
Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies (2020, background): “1 to obtain dimensionless strain from PSD: Mini-GRAIL had a bandwidth ∆f ' 30 Hz [289]; the Schenberg antenna had a bandwidth ∆f ' 50 Hz [286]; the Akutsu’s detector has bandwidth ∆f ' 2 kHz [277]21; the optically levitated sensors have a bandwidth ∆f = f/10 [58,59]; ∆f ' (10− 50) kHz for Cruise’s a”
Review of Fe-6.5 wt%Si high silicon steel—A promising soft magnetic material for sub-kHz application (2019, background): “The magnetic read/write head material for data storage is a good representation in this field [190,191].”