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This paper concerns with the main considerations for designing the Inter Satellite Link (ISL) for the system of IiNUSAT. It starts with the assessment of microwave spectrums required for operating the RF antennas and transceivers. In particular an analysis of how to cope with Doppler effects which inherently present in LEO system is presented. The result will require a certain wide bandwidth of the PLL if we are to operate a coherent communication system. Furthermore one should attempt to a finer phase synchronization effort. Finally a choice of IEEE 802.11 is proposed for the networking of the group of satellites. [ABSTRACT FROM PUBLISHER]

Inter-satellite link (ISL) is an important part of the next generation of GNSS, as well as a significant symbol of GNSS modernization. This paper analyzes the future GNSS inter-satellite geometric properties and spatial parameters and studies the signal scheme of ISL. A novel tracking algorithm using Kalman Filter assisted by ephemeris is proposed to deal with the high dynamic and low carrier-to-noise ratio (CNR) ISL signals. Simulation results have shown that the proposed algorithm can achieve higher track precision than the traditional approach using Phase Lock Loop (PLL) assisted by Frequency Lock Loop (FLL). [ABSTRACT FROM PUBLISHER]

This paper demonstrates the evaluation of various pixel level features for the dual handed sign language data set. Data sets are collected from the real life scenario. We compare the feature extraction methods like Histogram of Orientation Gradient (HOG), Histogram of Boundary Description (HBD) and the Histogram of Edge Frequency (HOEF). The accuracy of HOG and HBD found up to 71.4% and 77.3% whereas the accuracy of HOEF in real life data set is 97.3% and in ideal condition 98.1%. [ABSTRACT FROM PUBLISHER]