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This paper presents a ranging approach using an improved preamble sequence of orthogonal frequency-division multiplexing (OFDM) signal for 60 GHz system. The performance of range estimation with OFDM modulation under 60GHz channel is analyzed emphatically. In order to utilize the time-frequency characteristics of OFDM signal in the ranging system, the subcarriers phase difference algorithm with an...
How to effectively monitor water quality of Coastal and inland waters by optical remote sensing has always been a difficulty. This study develops a neural network model to improve the accuracy in monitoring water quality of Lake Taihu, China, a large shallow subtropical lake. A three-layer back-propagation neural network is built up to estimate concentrations of chlorophyll-a, total suspended matter...
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