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Your search keyword '"Wenjie Lai"' showing total 2 results
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2 results on '"Wenjie Lai"'

1. A Case Report of Xanthogranulomatous Cystitis.

Author

Pengliang C, Fengsheng L, Siyao H, Wenjie L, and Fei L

Abstract

Xanthogranulomatous cystitis (XC) is a chronic granulomatous inflammation with rare incidence. Herein, we report a 62-year-old female whose cystoscopic biopsy showed chronic inflammation accompanied with acute episode of inflammation. According to CT scan, pathology of the lesion could not rule out bladder carcinoma. Thus, partial cystectomy was done. But post-operatory pathological examination of the specimen was finally demonstrated Xanthogranulomatous cystitis. To the best of our knowledge, the present case of XC is the 28th to be reported in the world literature.

Published
2017
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2. An autonomous navigation algorithm for high orbit satellite using star sensor and ultraviolet earth sensor.

Author

Baohua L, Wenjie L, Yun C, and Zongming L

Subjects
Earth, Planet, Ultraviolet Rays, Algorithms, Spacecraft instrumentation
Abstract

An autonomous navigation algorithm using the sensor that integrated the star sensor (FOV1) and ultraviolet earth sensor (FOV2) is presented. The star images are sampled by FOV1, and the ultraviolet earth images are sampled by the FOV2. The star identification algorithm and star tracking algorithm are executed at FOV1. Then, the optical axis direction of FOV1 at J2000.0 coordinate system is calculated. The ultraviolet image of earth is sampled by FOV2. The center vector of earth at FOV2 coordinate system is calculated with the coordinates of ultraviolet earth. The autonomous navigation data of satellite are calculated by integrated sensor with the optical axis direction of FOV1 and the center vector of earth from FOV2. The position accuracy of the autonomous navigation for satellite is improved from 1000 meters to 300 meters. And the velocity accuracy of the autonomous navigation for satellite is improved from 100 m/s to 20 m/s. At the same time, the period sine errors of the autonomous navigation for satellite are eliminated. The autonomous navigation for satellite with a sensor that integrated ultraviolet earth sensor and star sensor is well robust.

Published
2013
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