Antenna trajectory error analysis in backprojection-based SAR images

2014 ◽  
Author(s):  
Ling Wang ◽  
Birsen Yazici ◽  
H. Cagri Yanik
Keyword(s):  
Error Analysis ◽  
Sar Images ◽  
Trajectory Error

scholarly journals 3D reconstruction and error analysis of multi-view space-borne SAR images under different configurations

2019 ◽  
Vol 2019 (19) ◽  
pp. 5758-5762 ◽  
Author(s):  
Chao Wang ◽  
Xiaolan Qiu ◽  
Fangfang Li ◽  
Bin Lei
Keyword(s):  
Error Analysis ◽  
3D Reconstruction ◽  
Sar Images

Multi-View Stereo Positioning Error Analysis Based on Spaceborne Optics and SAR Images

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
Keyword(s):  
Error Analysis ◽  
Positioning Error ◽  
Sar Images

Study on Comparison Analysis and Error Analysis of Polarization Ratio Models

2013 ◽  
Vol 655-657 ◽  
pp. 735-739
Author(s):  
Ke Wang ◽  
Yuan Zhang ◽  
Yan Bo Hui ◽  
Feng Wang ◽  
Hong Yan Li ◽  
...  
Keyword(s):  
Wind Speed ◽  
Error Analysis ◽  
Wind Field ◽  
Incidence Angle ◽  
Surface Wind ◽  
Comparison Analysis ◽  
Polarization Ratio ◽  
Sar Images ◽  
Ocean Surface Wind ◽  
Surface Wind Field

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.

Crankshaft Composite Lathe’s Tool Tip Trajectory Error Analysis and Simulation

2013 ◽  
Vol 823 ◽  
pp. 199-204
Author(s):  
San Wu Wang ◽  
Jiang Wu ◽  
Yao Deng Fan ◽  
Shou Ma ◽  
Xi Bin Gong
Keyword(s):  
Error Analysis ◽  
Machining Accuracy ◽  
Processing Quality ◽  
Trajectory Error ◽  
Trajectory Modeling ◽  
Processing Error ◽  
The Impact ◽  
The Ideal

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.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

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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