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Spatial information network is an important part of the integrated space-terrestrial information network, its bearer services are becoming increasingly complex, and real-time requirements are also rising. Due to the structural vulnerability of the spatial information network and the dynamics of the network, this poses a serious challenge to how to ensure reliable and stable data transmission. The...
Along with the continuous renewal and upgrade of the network storage system, the user has higher and higher demands for the secure and efficient data soft destruction. However, existing methods of data soft destruction usually bring too much destruction overheads. Even more, they are easy to recover, or not flexible enough. In order to achieve the target of destroying data effectively, we propose...
This paper introduces a mixed algorithm to solve the Traveling Salesman Problem (TSP). In the algorithm we mix the two heuristic algorithms to get a better performance and we validated the feasibility and efficiency of the mixed algorithm by simulating it with classic instances of TSP. According to the simulating results the algorithm can get the optimal solution and the performance is significantly...
The Constant False Alarm Rate (CFAR) algorithm is most commonly used for small target detection in SAR images. As the goodness-of-fit of distribution model to SAR clutter has great effect on the performance of algorithm, after a comprehensive statistical analysis of background clutters of different SAR data, a modified CFAR algorithm based on the Alpha-stable distribution is proposed for detecting...
Underwater video systems have assumed an increasingly important role in exploration and survey of the unknown deep ocean environments. This paper presents a real-time underwater video compression system that can be mounted on autonomous underwater vehicles (AUVs) for underwater survey applications. The hardware system is based on the digital media processor TMS320DM642 (DM642) of Texas Instruments,...
A new algorithm is proposed for velocity estimation of moving targets in single antenna synthetic aperture radar (SAR). Based on the fact that different velocity vectors cause different geometrical figures of the two-dimensional (2-D) signature in the range-Doppler (RD) domain, this algorithm estimates the azimuth and range velocities by a 2-D search such that the range cell migration correction (RCMC)...
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