Piston and Tip-Tilt Error Analysis of Segmented Diffractive Lens

2018 ◽  
Vol 38 (2) ◽  
pp. 0211002
Author(s):  
李韬杰 Li Taojie ◽  
吴鹏 Wu Peng ◽  
尹韶云 Yin Shaoyun ◽  
杨正 Yang Zheng ◽  
杜春雷 Du Chunlei ◽  
...  
2021 ◽  
Author(s):  
Gu Ma ◽  
Penglei Zheng ◽  
Feng Xu ◽  
Suodong Ma

2012 ◽  
Vol 249-250 ◽  
pp. 175-179
Author(s):  
Ren Zhong Pei ◽  
Deng Hua Li ◽  
Ke Ke Duan

Two-position north determining scheme for FOG north seeker can effectively eliminate the impact of drift, and can be easily implemented. But the angle between the base and the horizontal plane will induce tilt error and reduce the north seeking accuracy. In order to eliminate the tilt error and to improve the north seeking accuracy, the corresponding tilt compensation scheme is designed in this paper. A tilt sensor is used to measure the angle between the base and the horizontal plane, and the DSP is used to collect the output of the tilt sensor and solve real-time compensation. North seeking experiments proved that this tilt compensation scheme can compensate the base plane tilt error, and improve the north seeking accuracy effectively.


2006 ◽  
Author(s):  
Richard M. Clare ◽  
Brent L. Ellerbroek ◽  
Jean-Pierre Véran ◽  
Glen Herriot ◽  
David Andersen
Keyword(s):  

2018 ◽  
Vol 47 (2) ◽  
pp. 205002
Author(s):  
李韬杰 LI Tao jie ◽  
吴鹏 WU Peng ◽  
杨正 YANG Zheng ◽  
尹韶云 YIN Shao yun ◽  
杜春雷 DU Chun lei ◽  
...  

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.


1995 ◽  
Vol 11 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Dietmar Heubrock

Performance on a German version of the Rey Auditory-Verbal Learning Test (AVLT) was investigated for 64 juvenile patients who were subdivided in 6 clinical groups. In addition to standard evaluation of AVLT protocols which is usually confined to items recalled correctly, an error analysis was performed. Differentiating between total errors (TE), repetition errors (RE), and misnamings (ME), substantial differences between clinical groups could be demonstrated. It is argued that error analysis of verbal memory and learning enriches the understanding of neuropsychological syndromes, and provides additional information for diagnostic and clinical use. Thus, it is possible to gain a more accurate picture so that patients can be appropriately retrained, and research into the functional causes of memory and learning disorders can be intensified.


1994 ◽  
Vol 4 (10) ◽  
pp. 1999-2012 ◽  
Author(s):  
Nabil Derbel ◽  
Mohamed B.A. Kamoun ◽  
Michel Poloujadoff

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