Sheng Hong

Learn More
—In many scenarios, sensor nodes have to rely on a limited supply of energy (using batteries). To support long lifetime of Wireless sensor networks (WSN), an energy-efficient way of operation of the WSN is necessary. In this paper, we propose a new controlled layer deployment (CLD) routing protocol to guarantee coverage and energy efficiency on a sensor(More)
Blending submicron rubber particles with plastics can enhance the mechanical strength of the composite material. However, the difference in refractive index between the particle and matrix scatters light, making the material more opaque. We consider the possibility of reducing a particle's scattering cross section by adding coatings. We find that adding(More)
Thermal imaging is one of the most promising methods of probing the psychological status of human beings because of its non-invasiveness. This study develops a new method of assessing the stress status in real time. The differential energy between philtrum (located in the maxillary area) and forehead (DEFP) algorithm is developed to amplify and extract(More)
—This paper provides a new kind of passive beamformer which uses bridge function sequences as spreading sequence weights. The passive beamformer uses pseudorandom spreading sequence as weight of signal from each antenna element. Then it forms spatial radiation pattern by combining these signals. It can track and locate multiple objects' positions(More)
This letter introduces a novel passive beamformer which uses Bridge function sequence as spreading sequence weights for every antenna element. The set of Bridge function sequences have zero correlation zones (ZCZs) in their cross-correlation functions (CCFs). Due to the ZCZ properties of Bridge function sequences, the introduced passive beamformer features(More)