Azimuth
نویسندگان
چکیده
منابع مشابه
Extending common-azimuth migration
We present a review of common-azimuth prestack depth migration theory and propose a new extension to the original method. In common-azimuth migration theory, source and receiver raypaths are constrained to lie on the same plane at each depth level. By using data with a broader range of cross-line offsets, we increase the number of raypaths examined and consider more information. Consequently, o...
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It is well known that the inverse problem of estimating interval velocities from reflection data is poorly constrained in 2-D. We show that the interval velocity estimation problem in 3-D is much better constrained when the velocity function is estimated by jointly inverting the data collected along multiple offset-azimuth, even when the azimuth range is fairly limited. We extend to 3-D the lin...
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Detailed knowledge of the estimation performance for passive tracking of maneuvering targets is of fundamental interest. Therefore, the maximum achievable localization accuracy for maneuvering targets from azimuth measurements as well as from combined azimuth and azimuth rate measurements are calculated in this paper. These targets perform a piecewise curvilinear motion with an unknown number o...
متن کاملAzimuth Estimation in Polyphonic Music
Most of the research in music information retrieval (MIR) is concentrating only on monophonic source signals. The stereo information has been ignored largely in the research many years. However, commercially available music recordings typically consist of a two-track stereo mix. The type of mixing process used in the recordings can be roughly categorizes into live recordings and studio recordings.
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The paper focuses on the limits of the performances of TOPSAR acquisition mode, in terms of image quality and particularly to signal to ambiguity ratio (DTAR). These limits are due to the unwanted antenna pattern side-lobes arising when the antenna beam is steered in azimuth. Some ideas that could be exploited to limit the effect of grating lobes on DTAR are discussed. Particularly, a novel acq...
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ژورنال
عنوان ژورنال: Nature
سال: 1909
ISSN: 0028-0836,1476-4687
DOI: 10.1038/081126a0