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In order to solve the problem of the passive direction-finding and ranging in a sonar system of the small autonomous underwater vehicle (AUV), the optimized beam-forming (OBF) and the geometric positioning are proposed. Considering the strong target interference, the multiple thresholds are used for mitigating the interference, produced by the strength measurement and duration of signals, and then...
Dividing the Main Functional Regions on territory space is implemented in China, in order to identify the region units that are suitable to develop or protect. It is essential to coordinate the relationship between human and nature, so as to achieve the target of sustainable development. Gansu Province, which is located in the northwest of China, has large span in the geographic range. In this area,...
Femtocell is an emerging technology aiming for a better indoor coverage. Due to its low costs, high grade of service, promotion of fixed-mobile convergence (FMC) and no change of core network, it has drawn close attention from the standardization organizations and the industrial field. In the two-hierarchy networks composed of traditional macro cellular networks and the embedded femtocell hotspots,...
For a successful company, which is facing fiercely competitive environment with limited customer resource, achieving efficiently customer segmentation so as to apply high quality recommendation strategies is a key task. Ant colony clustering based on customer value is a novel method for efficiently approaching customer segmentation. Additionally, experience shows that customer behavior patterns will...
Since the permission of WiMAX (802.16e) as a member in IMT-2000 enables it to use 3G systemspsila bandwidth by WRC-07, more researchers have paid attention on the analysis of coexistence issue between WiMAX and WCDMA systems in 2500 to 2690 MHz band. In this paper, the detailed interference environment analysis, including several interference scenarios, network deployment, propagation models and interference...
Attention in this paper is concentrated on the characteristics of 16-bit C166 family SCM system and the preemptive and real-time multitasking kernel - muC/OS-II. muC/OS-II is configured for C167-LM microprocessor and ported to establish embedded development platform. On this basis, the design of ultrasonic reversing alarm system(URAS) is applied to the platform. The URAS includes five task modules...
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