Báo cáo hóa học: " Research Article Localization Accuracy of Track-before-Detect Search Strategies for Distributed Sensor Networks" doc

... Processing Volume 2008, Article ID 264638, 15 pages doi:10.1155/2008/264638 Research Article Localization Accuracy of Track-before-Detect Search Strategies for Distributed Sensor Networks Thomas ... Frank Ehlers The localization accuracy of a track-before-detect search for a target moving across a distributed sensor field is examined in this paper. The...

Ngày tải lên: 22/06/2014, 19:20

... that of WSNHA- LBAR because automatic self-learning in WSNHA-LBAR is exchanged by the decrease of performance for packet aver- agedelay. The performance for overhead of WSNHA-LBAR Table 4: Performance ... increment interval of 50 nodes. 5.3.2. The Second Group of Simulation Scenarios. In this group of simulation scenarios, we fixed the number of sensor nodes, the number of...

Ngày tải lên: 21/06/2014, 05:20

... pages doi:10.1155/2011/703239 Research Article Experimental Characterization of a UWB Channel for Body Area Networks Lingli Xia, Stephen Redfield, and Patrick Chiang VLSI Research Group, Oregon State ... cc2500). Knowledge of the channel model for UWB transmission is critical for any robust transceiver system. Moreover, body area networks exhibit unique radio propagation charac...

Ngày tải lên: 21/06/2014, 07:20

... are uniform for all values of n c : 32-32 for n c = 2, 16-16-16-16 for n c = 4, and 8-8-8-8-8-8-8-8 for n c = 8. On the other hand, the worst possible configuration, for a given value of n c ,is that ... presence of weighing the performance is determined by the overall statistics of the number of sensors accessing the channel. In Figure 7, we show the performance achieved w...

Ngày tải lên: 21/06/2014, 11:20

... Corporation Journal of Inequalities and Applications Volume 2008, Article ID 368275, 5 pages doi:10.1155/2008/368275 Research Article New Inequalities of Shafer-Fink Type for Arc Hyperbolic Sine Ling ... by computer,” Journal of Inequalities and Applications, vol. 2007, Article ID 78691, 8 pages, 2007. 6 B. J. Male ˇ sevi ´ c, “An application of λ-method on inequalities o...

Ngày tải lên: 22/06/2014, 02:20

... need for this additional hardware. 5.2.2. Provisional results To test the performance of this calibration procedure, the results are of 1000 simulations of a 10 × 10 array, each performed for ... amplitude accuracy of 0.7148 dB. Figure 26 shows how the amplitude accuracy of the iterative calibration varies with each successive iteration. The horizontal line indicates the per...

Ngày tải lên: 22/06/2014, 19:20

... 2007, Article ID 63503, 14 pages doi:10.1155/2007/63503 Research Article Grey Target Tracking and Self-Healing on Vehicular Sensor Networks Yih-Fuh Wang 1 and Lin-Lin Liu 2 1 Department of Computer ... Owing to the sensor characteristics and the sampling rate of digital information, the measured target trajectory data are usually not accurate enough for prediction purpose. The...

Ngày tải lên: 22/06/2014, 19:20

... 12 89.5OutofP c P 33 13 82.9OutofP c P 33 14 85.8OutofP c P 33 21 85.8OutofP c P 33 22 80.8OutofP c P 33 23 67.216.9 P 33 24 74.59.1 P 33 25 86.5OutofP c P 33 31 87.0OutofP c P 33 32 80.0OutofP c P 33 ... properly cited. 1. INTRODUCTION In recent years, research on wireless sensor networks has been promoted rapidly [1]. The sensor networks are composed of distributed sensor device...

Ngày tải lên: 22/06/2014, 22:20

... shown in Figure 2. For each TX-RX pair, we have a family of ellipses, with foci in TX and RX, for all possible values of l 1 + l 2 or, equivalently, of the delay of arrival of the target reflected pulse ... also emphasized the beneficial effectofusinganumberofreceiversN>3 from the point of view of the transmitted power. Finally, in Section 5.3, the dependence of the local...

Ngày tải lên: 21/06/2014, 22:20

... bP ρt x for all x ∈ Ω t and t ∈ τ , 2 V Δ 3.26 t, P ρt x 0 for all x ∈ Ω t and t ∈ k τ , then the trivial solution of 3.1 is P-uniformly stable. Proof. The proof is similar to the one of ... Then, the trivial solution of 3.1 is A-uniformly stable. Proof. The proof is similar to the one of Theorem 3.7 with a remark that since lim x → 0 V t, x 0 uniformly in t ∈...

Ngày tải lên: 21/06/2014, 05:20