Báo cáo hóa học: " Research Article Efficient and Precise Processing for Squinted Spotlight SAR Through a Modified Stolt Mapping" doc

... 59704, 7 pages doi:10.1155/2007/59704 Research Article Efficient and Precise Processing for Squinted Spotlight SAR Through a Modified Stolt Mapping Marijke Vandewal, 1 Rainer Speck, 2 and Helmut ... processing using a modified Stolt mapping will be developed and analyzed to enhance the quality of the final SAR image. Additionally, the proposed algorithm h...

Ngày tải lên: 22/06/2014, 23:20

... fractional delay is necessary for precise time alignment of the two bands. A good fit for this purpose is a standard all- pass interpolated fractional delay line. However, in contrast to usual applications ... original and modified C lf structures alone, and examples of the original and modified effect applied to a short vocal passage and a short synthesized drum loop. 5...

Ngày tải lên: 21/06/2014, 05:20

... HH-VBF can control forwarding redundancy by adjusting β. Each node that qualifies as a candidate forwarder delays the packet forwarding by an interval T adaptation which is computed the same way as ... forward the packet. We refer to such a node as a candidate forwarder for the packet. As in VBF, each candidate forwarder maintains a self- adaptation timer which depends on the desirab...

Ngày tải lên: 21/06/2014, 17:20

... outperforms both ALG1 and ALG2. Finally, for a dense network (R = 12), ALG3 still performs better than both ALG1 and ALG2. Thus, ALG3 outperforms both ALG1 and ALG2 across the full range of network ... of Frame Delimiter Frame Length MPDU MAC Protocol Data Unit (c) MAC command frame structure of 802.15.4 protocol Figure 8: IEEE 802.15.4 frame sequence, data, and command frame stru...

Ngày tải lên: 21/06/2014, 22:20

... Methods and Studies,B.L.GoldenandA .A. Assad, Eds., pp. 223–248, North-Holland, Amsterdam, The Netherlands, 1988. [8] H. N. Psaraftis, “Dynamic vehicle routing: status and prospects,” Annals of Operations ... information precessing and rescue commanding is usually far away from the disaster area. As shown in Figure 1, t r is the travel time for a pigeon between the headquarter and...

Ngày tải lên: 21/06/2014, 23:20

... S. Gollamudi, S. Kapoor, S. Nagaraj, and Y F. Huang, “Set- membership adaptive equalization and an updator-shared im- plementation for multiple channel communications systems,” IEEE Transactions ... Douglas, “Adaptive filters employing partial updates,” IEEE Transactions on Circuits and Systems II: Analog and Digi- tal Signal Processing, vol. 44, no. 3, pp. 209–216, 1997. [6] T. Abo...

Ngày tải lên: 22/06/2014, 22:20

... averaging at 0.3933 for forward pass and 1.1727 for backward, than that of the appr.II inference, averaging at 0.0127 for forward pass and 0.0129 for backward. Moreover, the KL divergence of appr.I ... (a) Forward exact. (b) Forward approximate I. (c) Forward approximate II. (d) Backward exact. (e) Backward approximate I. (f) Backward approximate II. Table 1: The mean travel time...

Ngày tải lên: 21/06/2014, 05:20

... Advances in Wireless Communications (SPAWC ’03), pp. 42–45, Taoyuan, Taiwan, March 2001. [14] L. Anttila, M. Valkama, and M. Renfors, “Circularity-based I/Q imbalance compensation in wideband ... this can be a valid assumption. Thus, once we have reliable estimates of IQ imbalance gain parameters, we can then compensate the channel based on any commonly available methods. A longer train...

Ngày tải lên: 21/06/2014, 08:20

... snapshot-like simulators which do not have a time axis. In a dynamic simulator, this approach is probably less accurate than the first one. 4. Performance Metrics So far, we have an (almost) analytical ... time axis and with abstract, semianalytical models of RRM and QoS. It allows self-tuning of parameters during the simulations (which is a typical SON aspect) rather than using a...

Ngày tải lên: 21/06/2014, 11:20

... functions to generate HMAC(data) and aggregate HMAC(data) with original multicast data as [data |HMAC(data)]. Secure multicast com- munication procedures are described in detail as follows: N 1 −→ ... Sklavos and Zhang [14], Szczechowiak et al. [15], and Liu and Ning [16]. Sklavos and Zhang developed a hardware design and architecture for elliptic curve cryp- tography (ECC). S...

Ngày tải lên: 21/06/2014, 11:20