Existing localization techniques such as GPS have fundamental limitations which preclude deployment in urban canyons or areas with inconsistent network availability. Augmenting GPS requires specialized infrastructure or tedious calibration tasks which limit general purpose applications. In this paper, we examine the utility of cooperatively sharing location data among connected nodes in order t...

The residential block is the cognitive unit for residents to constitute urban imagery. As one of most frequently used outdoor public spaces by residents, thermal comfort street canyons an essential indicator assessing sustainable and livable cities. problem uncomfortable summer climate in warm temperate zone China has not been adequately studied. study aims analyze influence building layout for...

The research purpose of this work is guiding the spatial morphological design blocks via relevant indicators to realize suitable wind environments. In doing so, it necessary find most indicator types and value ranges for each urban morphology. At present, has been based on numerical simulation ideal block shapes rarely proposes results actual types, which often tend be complex Therefore, paper ...

The design of street canyons has become a focus attention under the requirements high-quality urban modernization, while existing research gradually broken through basic norms aesthetic to include ecological considerations. However, it is only in recent decades that relevant been carried out super and super-large cities China. In this article, we take Nanchang, one largest China, as an example,...

Many aquatic species in the arid southwestern United States are imperiled, persisting primarily in isolated, low-order streams that are increasingly vulnerable to stochastic disturbances. During 2003 and 2004, we surveyed 39 mountain canyons in southeastern Arizona, USA, for lowland leopard frogs (Rana yavapaiensis), a species that has declined in abundance and distribution across its range in ...

Formation and deepening of submarine canyons are typically attributed to erosion. We present data from an industry-grade seismic volume located offshore Brunei Darussalam illustrating how topography typically associated with erosion can be produced under conditions of net sediment deposition. These data were generated via subsurface mapping in the vicinity of a shale-cored anticline on the Quat...

The performance of Global Navigation Satellite System (GNSS) and Inertial (INS) integrated navigation can be severely degraded in urban canyons due to the non-line-of-sight (NLOS) signals multipath effects. Therefore, achieve a high-precision robust system, real-time fault detection localization algorithms are needed ensure integrity. Currently, residual chi-square test is used for positioning ...

Accurate and globally referenced positioning is the key prerequisite for fully successful autonomous systems. Global Navigation Satellite System (GNSS) could provide global service in open areas. Unfortunately, under denes urban areas, which it typical systems to operate, performance of GNSS suffers from non-line-of-sight (NLOS) receptions multipath effects caused by signal reflection blockage ...

Changes in urban geometry significantly alters the microclimate. Suitable geometrical layouts can effectively improve thermal environment to achieve a more sustainable and healthier city. A quantitative assessment of relationship between is essential provide scientific guidance for better building design. Hence, we performed scaled outdoor measurement investigate diurnal variations air, west ea...