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2011-08-03
Parameter Estimation of LFM Signal Intercepted by Synchronous Nyquist Folding Receiver
By
Progress In Electromagnetics Research C, Vol. 23, 69-81, 2011
Abstract
Nyquist folding receiver (NYFR) is a new kind of interception architecture, which can simultaneously intercept wideband signals in multi-Nyquist zones with one or two analog-to-digital converters (ADCs). A parameter estimation algorithm of the linear frequency modulated (LFM) signal intercepted by an improved NYFR is presented. Firstly, the NYFR is improved by introducing a synchronous mechanism, and we denote this structure as a synchronous NYFR (SNYFR). Secondly, taking LFM as an example, the input and output noise distributions of an SNYFR are discussed. Then, a fast parameter estimation algorithm is derived from the frequency spectrum of the output signal, and an advice for the design of local oscillator signal is given. Simulations show that the parameter estimation accuracy is close to the maximum likelihood when the signal to noise ratio (SNR) is above -3 dB.
Citation
Deguo Zeng Hao Cheng Jun Zhu Bin Tang , "Parameter Estimation of LFM Signal Intercepted by Synchronous Nyquist Folding Receiver," Progress In Electromagnetics Research C, Vol. 23, 69-81, 2011.
doi:10.2528/PIERC11062801
http://www.jpier.org/PIERC/pier.php?paper=11062801
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