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In this paper, we consider the problem of removing outliers from phase measurements in phase of arrival (POA) based localization, applied for the landslide monitoring. Our approach adopts so called cumulative residues and recursively removing outliers. The simulation results show that the proposed method has successfully removed outliers.
In our previous study, we proposed a landslide monitoring system using a phase difference in the 920-MHz-band radio waves and experimentally confirmed that the positioning accuracy is of the order of millimeters. However, the experiments were not carried out on a real slope. In this paper, we report the experimental results of landside monitoring on a slope with tall vegetation.
The designed liquid immiscibility of Cu-Ni-Fe-Mo-Si alloy led to separation of the spherical second liquid in the Cu-rich liquid, which solidified into coarse hard grains packed with Laves phase. The coarseness of hard grains was controlled not only by the repulsive interactions in Cu–Fe and Cu–Mo system, but also the refining effect of Ni and Si. CALPHAD analysis of the multicomponent system confirmed...
Passive bistatic radars (PBRs) exploit existing transmitters such as TV broadcasts, radio broadcasts, Global Navigation Satellite System (GNSS), etc., as the source of illumination. PBR consists of two receivers, with one antenna pointed at the source and the other at the target, and the target range is determined by correlating the signal scattered by the target with the signal directly arrived at...
The proposal for an observation system of crustal movement using two quasi-zenith satellites is presented. In the system, two quasi-zenith satellites have a retro-directive antenna on board and an earth station have two beam antenna in the direction to the two quasi-zenith satellites. The crustal movement at the area of the earth stations is obtained by interfering with two signals from the retro-directive...
Passive bistatic radars (PBRs) exploit existing transmitters such as TV broadcasts as the source of illumination. PBR is consisted of two receivers, with one antenna pointed at the source and the other at the target, and the target range is determined by correlating the signal scattered by the target with the signal directly arrived at the receiver. Since PBR does not transmit any waveform, it consumes...
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