نتایج جستجو برای: frequency modulation

تعداد نتایج: 614681  

Journal: :Review of Scientific Instruments 2012

Journal: :The Journal of the Acoustical Society of America 2004

Journal: :Journal of Physics: Conference Series 2007

1999
C. Sinan Güntürk

A sigma-delta modulator converts a sequence of real numbers bounded by 1 into a digital sequence with entries +1 and 1 only. When the input sequence consists of samples of a bandlimited function, oversampled by a factor with respect to its Nyquist frequency, we prove that filtering the digital output with an appropriate kernel reproduces the original bandlimited function up to an error of at mo...

2011

Unfortunately, traditional RF pulse measurements become less effective predictors of performance in radars that use pulse compression. For example, the width of an uncompressed radar pulse is directly related to spatial resolution. In contrast, the resolution depends on pulse width, chirp bandwidth and chirp linearity in a compressed radar system that uses linear frequency modulated (LFM) chirp...

Journal: :International Journal of Satellite Communications 1984

Journal: :IOP Conference Series: Earth and Environmental Science 2021

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