Search - frequency spectrum estimation

Search - frequency spectrum estimation - List

[Industry research] Spectraldecomposition DL : 0: 瞬时谱估计，用于检测低频油气特性，有助于地层油气识别。-Instantaneous spectrum estimation for detecting low-frequency oil and gas properties, help to identify the formation of oil and gas.
Date : 2025-12-24 Size : 903kb User : ljc
[Industry research] mypaper4 DL : 0: To fully utilize the character of the bioradar echo signal, autocorrelation analysis, spectral estimation methods and time-frequency analysis are presented in this paper. These methods are employed to deal with no one, single people and multi-people echo signal. Singular value decomposition (SVD) is used to extract feature vector for pattern identification. Single people and multi-people can be identified from the echo signal by the bioradar. Experimental results show that spectral estimation methods can improve the signal-noise ratio, and efficiently detect the signal’s frequency components. The method SVD based on Spectrum is stable and efficient to identify target information by bioradar.
Date : 2025-12-24 Size : 106kb User : qustwcy
[Industry research] 12.ISCA-RJRS-2013-290 DL : 0: Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carrying a frequency in band S can reach to several tens of kHz. To estimate and compensate Doppler, a CW pilot carrier is used. The aim of this study is simulate Doppler frequency estimation using MIMO-OFDM technique. Finally, the proposed algorithm is compared to MMSE algorithm in order to insure its performance.
Date : 2025-12-24 Size : 133kb User : Neo Matrix