The gyroscope free strap-down INS is composed only of accelerometers. Any gyroscope free INS navigation error is deeply affected by the accuracy of the sensor bias, scale factor, orientation and location error. However these parameters can be found by calibration. There is an important research issue about a multi-position calibration method in this paper. It provides a novel method to find the...

There are 108 beam position monitors in the PLS for the orbit measurement and closed orbit correction. As the BPM pickup electrodes are assembled directly on the 10m-long vacuum chamber, calibration of the electrical center of BPMs have been done with the external rf transmission-reflection method. Since the closed orbit distortion is still larger than 500 mm rms, we are developing the beam-bas...

We tested the reliability of noninvasive cardiac output (CO) measurement in different body positions by pulse contour analysis (CO(pc)) by using a transmission line model (K. H. Wesseling, B. De Wit, J. A. P. Weber, and N. T. Smith. Adv. Cardiol. Phys. 5, Suppl. II: 16-52, 1983). Acetylene rebreathing (CO(rebr)) was used as a reference method. Twelve subjects (age 21-34 yr) were studied: 1) six...

LiDAR systems have been widely adopted for the acquisition of dense and accurate topographic data over extended areas. Although the utilization of this technology has increased in different applications, the development of standard methodologies for the calibration of LiDAR systems has not followed the same trend. Current in-flight calibration methods have the following drawbacks: (i) They are ...

In Japan, as the number of sewerage management facilities increases, continuous maintenance drainage pipes and sewage is considered important. However, it grinding for operators to perform expansive in-pipe inspection. Therefore, in recent years, inspections using stand-alone type piping inspection robots have been actively used. Inside pipe, there are disturbances such unevenness, sludge, or d...