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浏览/检索结果: 共6条，第1-6条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Imaging and detection method for low signal-to-noise ratio airborne synthetic aperture ladar signals 期刊论文 Optical Engineering, 2023, 卷号: 62, 期号: 9 作者:  J. Gao;  D. Li;  K. Zhou;  A. Cui;  J. Wu 收藏  |  浏览/下载：1/0  |  提交时间：2024/07/03 4m级望远镜主轴交流伺服控制系统研究 学位论文 博士: 中国科学院大学, 2015 作者:  邓永停 收藏  |  浏览/下载：223/0  |  提交时间：2015/11/30 大型望远镜  永磁同步力矩电机  空间矢量控制   Time delay compensation method for tip-tilt control in adaptive optics system 期刊论文 Applied Optics, 2015, 卷号: 54, 期号: 11, 页码: 3383-3388 作者:  Wang, C. C.;  L. F. Hu;  Y. K. Wang;  S. X. Wang;  Q. Q. Mu 收藏  |  浏览/下载：10/0  |  提交时间：2016/07/15 Method of velocity measurement based on Moire fringe and nonlinear tracking differentiator 期刊论文 Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2014, 卷号: 43, 期号: 6, 页码: 1930-1935 Huang F.; Wan Q.; Yang S.; Zhao C.; Yu H. 收藏  |  浏览/下载：16/0  |  提交时间：2015/04/24 Modified Sub-aperture Stitching Algorithm using Image Sharpening and Particle Swarm Optimization 期刊论文 Journal of the Optical Society of Korea, 2014, 卷号: 18, 期号: 4, 页码: 341-344 Chen Y. W.; Miao E. L.; Sui Y. X.; Yang H. J. 收藏  |  浏览/下载：15/0  |  提交时间：2015/04/24 Error analysis and test study of fiber optic gyroscope north-finder (EI CONFERENCE) 会议论文 Advanced Sensor Systems and Applications II, November 8, 2004 - November 12, 2004, Beijing, China Zhang Z.; Sun J.; Wu K. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 North-finder system is an important application of the inertial technology. It provides true north azimuth information to f all kinds of ground-based equipment. This paper designed a dynamic automatic north-finder based on the modulation output of fiber optic gyroscope (FOG). In this scheme  the sine output signal of the FOG was sampled and disposed  and then the real north of surveyed point on the surface of earth was calculated. The deviation caused by the base tilt was compensated by an accelerator. The output signals of FOG and accelerator were computed combined with the position sampled from increasing encoder by digital signal processor. Successive rotating technique was adopted to modulate the FOG signal periodically. Most of the low frequency part of random gyro drift errors was compensated. The north-finder accuracy was improved compared with the traditional static measuring method. The test result shows the FOG automatic north-finder obtains 2' true north angle accuracies within not more than three minutes  can meet the orientation need of artillery  terrain measurement vehicle  armored car  unmanned drive vehicle  geodetic survey and tunnel exploration.