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	GNSS time offset monitoring based on the single difference among systems 期刊论文 OAI收割 IET RADAR SONAR AND NAVIGATION, 2020, 卷号: 14, 期号: 2, 页码: 299-302 作者: Tu, Rui; Zhang, Pengfei; Zhang, Rui; Fan, Lihong; Liu, Jinhai \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2020/11/09 delays satellite navigation radio receivers Global Positioning System GNSS time single difference time offset monitoring multiple Global Navigation Satellite Systems compatibility interoperability conventional signal space approaches single-point positioning SPP precise point positioning single-difference point positioning SDPP receiver clock parameter common model errors estimated time smooth estimation time offset estimation different stations system biases
	GNSS系统时间偏差的确定及其对定位结果的影响1 期刊论文 OAI收割时间频率学报, 2014, 卷号: 37, 期号: 1, 页码: 57 作者: 张雪; 张慧君; 李孝辉 \| 收藏 \| 浏览/下载：1/0 \| 提交时间：2023/12/13 GNSS system time offset positioning result GNSS 系统时间偏差定位结果
	Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau 期刊论文 OAI收割 GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2008, 卷号: 120, 期号: 3-4, 页码: 312-327 作者: Wang, Shifeng; Fan, Chun; Wang, Gang; Wang, Erchie \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2018/09/26 Xianshuihe fault system stream offset late Cenozoic time restraining bend clockwise rotation
	Late Cenozoic deformation along the northwestern continuation of the Xianshuihe fault system, Eastern Tibetan Plateau 期刊论文 OAI收割 GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2008, 卷号: 120, 期号: 3-4, 页码: 312-327 作者: Wang, Shifeng; Fan, Chun; Wang, Gang; Wang, Erchie \| 收藏 \| 浏览/下载：9/0 \| 提交时间：2018/09/26 Xianshuihe fault system stream offset late Cenozoic time restraining bend clockwise rotation
	Study on chromaticity balance for LED exposure system (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology, September 9, 2007 - September 12, 2007, Beijing, China 作者: Meng Z.; Meng Z. 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/03/25 A standard white light compounding algorithm based on combination of CCD illumination acquisition with computer control is presented for LEDs. The computer adjust and control the working current of LEDs by using three-color LEDs illumination acquired by CCD camera achieved chromaticity coordinates error between compounded white light and standard white light D65 less than the threshold beforehand setted by this technique then acquiring needed standard white light. Compounded white light meet the chromaticity error demand that is able to be changed at the same time the CCD illumination acquisition system is eliminated. The proposed algorithm improved the light energy utilization efficiency of LED and eliminated the offset of central wavelength and chromaticity coordinates due to work current change of LEDs. Experimental results show that the proposed algorithm achieved lesser chromaticity error uv=0.001 relative to standard white light D65 enhanced chromaticity uniformity of illumination field.
	Study on chroma balance based on grating spectrometer for LED (EI CONFERENCE) 会议论文 OAI收割 Light-Emitting Diode Materials and Devices II, November 12, 2007 - November 14, 2007, Beijing, China 作者: Meng Z.; Meng Z. 收藏 \| 浏览/下载：23/0 \| 提交时间：2013/03/25 A standard white light compounding algorithm based on combination of choma coordinates acquisition system with computer working current control system is presented for three-color LED. The chroma coordinates acquisition system consist of grating spectrometer and integrating sphere. The computer adjust and control the working current of three-color LED then achieved chroma coordinates error between the compounded white light and standard white light D65 until the chroma coordinates is less than the threshold beforehand set by this technique. The compounded white light meet the chroma error demanded that is able to be changed at the same time the chroma coordinates acquisition system and the working current control system are eliminated. The proposed algorithm the offset of central wavelength and the change of chroma coordinates due to working current variety for LEDs. Experimental results show that the proposed algorithm achieved lesser chroma error uv=0.001 relative to standard white light D65 enhanced chroma uniformity of illumination field.
	Research on the nonuniformity correction of linear TDI CCD remote camera (EI CONFERENCE) 会议论文 OAI收割 Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China Ya-xia L.; Zhi-hang H. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 Many applications such as industrial inspection and overhead reconnaissance benefit from line scanning architectures where time delay integration (TDI) significantly improves sensitivity[5]. Images with linear response have become the backbone of the imaging industry. But each pixel of the TDI CCD has unique light sensitivity characteristics. Because these characteristics and the lens of the optical system affect camera's linearization and its performance they must be removed through calibration. The process by which a CCD image is calibrated is known as nonuniformity correction. This paper discusses several methods of nonuniformity correction[2]. The first is one-point correction technique which requires only one calibration point. This approach is to shift each curve toward the nominal curve by subtracting the offset from or adding the offset to the average. The second is two-point correction technique which requires two calibration points. Each point is rotated and aligned so that all the detectors have the same response under the same radiance. The third is multipoint correction. It is recommended that more calibration points be implemented at appropriate regions of the response curve. Depend on the linear photoelectric response of the TDI CCD we use two-point calibration and the standard deviations for the images are given before and after the correction.