The requirement for the two coregistered

The requirement for the two coregistered images to form a meaningful interferograms is stringent, which means that the two SAR phase images for the same area must be precisely aligned (as accurate as 0.1 pixel) so that pixels in one phase image correspond exactly to the pixels in the other in geographic location. This is understandable because the phase difference between two different ground pixels does not make any sense.The stability of the ground pixel, local slope of the terrain, the direction of observation, orbital configuration, frequency used for the two images, image processing procedure, topography difference observed from two selleck chemicals slightly different points of view by the radar, all affect the formation of an interferogram. Thus, for two images to be used for an interferogram, the ground pixel should be stable, terrain slope should be small, and the observation direction, orbit configuration, and processing procedure should be exactly the same. For the stringent requirement for forming an interferogram, see [1].1.5. Range Change Detection from InterferogramIf there is just a ground displ
The main factors affecting the endurance life of tracked vehicle mobility systems are the vibrational environment caused by road profiles, the obliqueness of roads, frequency of oblique roads, oblique continuity, and left and right steering characteristics.The vibration environment caused by the road profile mainly affects the suspension and structure of vehicle. The severity for test courses at the Changwon proving ground and the mobility roads in army operation areas (AOAs) was measured and compared using the profilometer which was developed by the Changwon proving ground in the Agency for Defense Development [1]. Through the comparison of analyzed severity, the standardization of severity for test courses at the Changwon proving ground was achieved [2].The characteristics of the powertrain system of mobility systems have a close relation to the obliqueness of roads, frequency of oblique roads, oblique continuity, and left and right steering characteristics. Studies related to the durability of powertrain systems have been performed partially by commercial vehicle manufacturers. Kakinoki performed a study for life prediction of turbine-generator shafts which the rotational components like those found in powertrain systems [3]. Tohru and Masanori established an accelerated test method corresponding with the severity of service conditions to perform endurance tests on auto transmissions, and evaluated the durability characteristics of auto transmissions in the laboratory or proving ground [4�C5]. Kim and Shin studied a computer simulation method regarding the cumulative damage prediction for the gears and bearings of auto transmissions [6�C7], and Kong calculated and compared the damage of rotational components using both rainflow counting and revolution counting [8].

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