Antenna trajectory error analysis in backprojection-based SAR images

Author(s):  
Ling Wang ◽  
Birsen Yazici ◽  
H. Cagri Yanik
2019 ◽  
Vol 2019 (19) ◽  
pp. 5758-5762 ◽  
Author(s):  
Chao Wang ◽  
Xiaolan Qiu ◽  
Fangfang Li ◽  
Bin Lei

2018 ◽  
Vol 38 (5) ◽  
pp. 0528003
Author(s):  
李莹莹 Li Yingying ◽  
吴昊 Wu Hao ◽  
常学立 Chang Xueli ◽  
程宇峰 Cheng Yufeng

2013 ◽  
Vol 655-657 ◽  
pp. 735-739
Author(s):  
Ke Wang ◽  
Yuan Zhang ◽  
Yan Bo Hui ◽  
Feng Wang ◽  
Hong Yan Li ◽  
...  

Polarization ratio models are key problem for ocean surface wind field retrieval from HH polarization SAR images. This paper studied deeply on various polarization ratio models, and carried on comparison analysis and error analysis about them. We analyzed influence of incidence angle, azimuth, and wind speed for polarization ratio. By using true measurement of polarization ratio, we statistically valuated ability of various polarization ratio models, and proposed the best choice of polarization ratio models. Our research has guide meaning for using polarization ratio models reasonably.


2013 ◽  
Vol 823 ◽  
pp. 199-204
Author(s):  
San Wu Wang ◽  
Jiang Wu ◽  
Yao Deng Fan ◽  
Shou Ma ◽  
Xi Bin Gong

The crankshaft composite follow crankshaft turning lathes use the following tool system to complete the turning of crankshaft, when crankshaft machining is working, the turret mechanisms processing error and assembly errors will affect the crankshafts processing quality, So it is difficult to control the actual machining accuracy, or it may cause the waste of material. Therefore, in this paper, by analyzing the impact of the rod length errors on the trajectory of the tool tip, the tool tip trajectorys equations can be built. Using MATLAB tools, we can build the tip point trajectory modeling and solve the deviation between the actual tip point and the ideal trajectory, and finally can get the result of rod lengths error on the accuracy of the actual processing, which will provide basis for the design and analysis in future.


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.


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