Recent observations suggest that perceived visual direction in the sagittal plane (angular direction in elevation, both upward and downward from eye level) is exaggerated. Foley, Ribeiro-Filho, and Da Silva's (2004) study of perceived size of exocentric ground extent implies that perceived angular direction in azimuth may also be exaggerated. In the present study, we directly examined whether p...

Tracking of helicopters or any airborne targets requires estimation of both azimuth and elevation angles of the target. In this paper, an algorithm for estimation of azimuth and elevation using acoustic array (array of microphones) will be presented. There are several super resolution algorithms for estimation of direction of arrival (DoA) angles, such as minimum variance distortionless respons...

The data driven 3D true azimuth Common Focusing Point (CFP) data regularization technique is a multi-dimensional data regularization tool. It can be used as a general tool to merge multiple surveys pre-stack, including, for example, orthogonal Wide Azimuth (WAZ) surveys, different Narrow Azimuth (NAZ) surveys, or a combination of the two. Some technical details that address how to improve outpu...

CO2 circulated geothermal production can be integrated with geological sequestration as a utilization method to offset cost. Investigation of heterogeneity impact is limited and its effect on circulation associated heat recovery unclear. This study aimed improve the understanding this problem by numerical experiments. A set spatially correlated heterogeneous porosity fields generated using varie...

Lightning very high frequency interferometry is a crucial tool for studying the development of lightning leaders within thunderclouds, and conventional antenna array composed two coplanar orthogonal baselines. In this study, we develop new location methods an irregular based on optimization algorithm, using all baselines in calculation. Besides, have analyzed effects kinds time uncertainty resu...

The primary auditory cortex (A1) is involved in sound localization. A consistent observation in A1 is a clustered representation of binaural properties, but how spatial tuning varies within binaural clusters is unknown. Here, this issue was addressed in A1 of the pallid bat, a species that relies on passive hearing (as opposed to echolocation) to localize prey. Evidence is presented for systema...

this paper develops new results on the use of model predictive control to regulate the attitude of a ground station antenna. two degree of freedom az-el pedestal is considered as ground station antenna. permanent magnet synchronous motors are taken into consideration as the best choice for satisfaction of control objectives as actuators. the design is based on a two cascade controller consist o...

Digital elevation models (DEMs) of a coastal area in a time series are very useful to monitor annual and seasonal coastal morphologic changes. Topographic features in coastal regions change significantly within a relatively short period compared with landmass. However, it is difficult to obtain coherent interferometric SAR pairs over coastal areas. ERS-ENVISAT 30-minute tandem pair is useful to...