Compound rotation of spiral waves in a light-sensitive Belousov—Zhabotinsky medium

1993 ◽  
Vol 204 (3-4) ◽  
pp. 257-264 ◽  
Author(s):  
M. Braune ◽  
H. Engel
Keyword(s):  
Spiral Waves ◽  
Compound Rotation

scholarly journals A Low-Cost MEMS Missile-Borne Compound Rotation Modulation Scheme

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4910
Author(s):  
Xiaoqiao Yuan ◽  
Jie Li ◽  
Xi Zhang ◽  
Kaiqiang Feng ◽  
Xiaokai Wei ◽  
...  
Keyword(s):  
Rotation Axis ◽  
Low Cost ◽  
Roll Angle ◽  
Modulation Scheme ◽  
Navigation Systems ◽  
Rotation Scheme ◽  
Compound Rotation ◽  
Error Accumulation ◽  
Axis Rotation ◽  
Single Axis Rotation

Rotation modulation (RM) has been widely used in navigation systems to significantly improve the navigation accuracy of inertial navigation systems (INSs). However, the traditional single-axis rotation modulation cannot achieve the modulation of all the constant errors in the three directions; thus, it is not suitable for application in highly dynamic environments due to requirements for high precision in missiles. Aiming at the problems of error accumulation and divergence in the direction of rotation axis existing in the traditional single-axis rotation modulation, a novel rotation scheme is proposed. Firstly, the error propagation principle of the new rotation modulation scheme is analyzed. Secondly, the condition of realizing the error modulation with constant error is discussed. Finally, the original rotation modulation navigation algorithm is optimized for the new rotation modulation scheme. The experiment and simulation results show that the new rotation scheme can effectively modulate the error divergence of roll angle and improve the accuracy of roll angle by two orders of magnitude.

Ca2+ spiral waves in a spatially discrete and random medium

2009 ◽  
Vol 38 (8) ◽  
pp. 1061-1068 ◽  
Author(s):  
Jun Tang ◽  
Lijian Yang ◽  
Jun Ma ◽  
Ya Jia
Keyword(s):  
Random Medium ◽  
Spiral Waves

Evolution of Spiral Waves under Modulated Electric Fields

2005 ◽  
Vol 22 (9) ◽  
pp. 2176-2179 ◽  
Author(s):  
Ma Jun ◽  
Ying He-Ping ◽  
Pan Guo-Wei ◽  
Pu Zhong-Sheng
Keyword(s):  
Electric Fields ◽  
Spiral Waves

scholarly journals Spiral waves on static and moving spherical domains

2005 ◽  
Vol 182 (2) ◽  
pp. 472-486 ◽  
Author(s):  
Faridon Amdjadi ◽  
Jagnnathan Gomatam
Keyword(s):  
Spiral Waves ◽  
Spherical Domains

Competition of spiral waves with anomalous dispersion in Couette–Taylor flow

2004 ◽  
Vol 18 (2-4) ◽  
pp. 85-95 ◽  
Author(s):  
A.B. Ezersky ◽  
N. Latrache ◽  
O. Crumeyrolle ◽  
I. Mutabazi
Keyword(s):  
Anomalous Dispersion ◽  
Spiral Waves ◽  
Taylor Flow
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