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This paper proposes the concept of drones capable of functioning as “Co-Archaeologists” that can map large caves and enter dangerous or hard-to-reach spaces. Using RGB-D data collected by drones, we will be able to produce accurate 3D models and semantic maps with proper lighting co-supervised by human archaeologists. This is going to be a major advance in archaeological practice, which can accelerate...
Unmanned aerial vehicles (UAVs) are widely applied in both civil and military fields, such as rescue, surveillance, exploration, navigation, precision agriculture and etc., because of small size, low cost and easy maintenance. However the autonomous flight of UAVs under unstructured environment is still open, especially when GPS is unavailable or indoor task is scheduled. Furthermore, GPS-based navigation...
This paper describe a novel design of dual band monopulse antenna array, which is made of a X-band and a K-band in the same planar radiating surface. The K-band array is the traditional waveguide slot antenna, which is interfaced to the X-band antenna. The simulated and measured radiation patterns at center frequency are both presented. The side-lobe level for the sum pattern of two frequency are...
A novel compact slot patch antenna with two spirals on single thin substrate is introduced, which is 66% smaller than the conventional half-wave patch antenna. The four parallel slots on surface can enhance the length of current path and reduce the size of patch, the two spirals used can decrease the height of antenna at the same tme. Good agreement between the theoretical and experimental results...
In order to collect energy monitoring data of large-scale public buildings, a data/image transmission device based on embedded TCP/IP protocol is designed and made in this paper. This device was designed with STM32 chips, receiving data or original images from meter reading device wirelessly, and transferring the data and images to monitoring center with TCP/IP protocol through the existing Internet...
To monitor the energy consumption of large public buildings, it is proposed to research a data transmission device on ZigBee-embedded development - TCP / IP is proposed. ZigBee can achieve accurate data and real-time transmission. This paper makes the new data protocol for data transmission and also describes the system focused on realization of hardware and software. The device can realize telecommunication...
A novel compact slot patch antenna loaded with a pair of spirals on thin substrate is introduced, which is 66% smaller than the conventional half-wave patch antenna. The effects of four parallel slots on surface current distribution and loading spirals on impedance matching are all investigated theoretically respectively. Good agreement between the theoretical and experimental results is obtained...
With the rapid development of economy and continuous improvement of people's purchase ability in China, the motor vehicles ownership is increasing rapidly, so as the traffic accidents and traffic death toll, which make the road traffic situation in China worse and worse. According to data on the national road traffic accidents from 1990 to 2007, the characteristics of road traffic accidents in China...
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