Research on a real-time polarization compensation method for dynamic quantum communication terminals

2022 ◽  
Vol 149 ◽  
pp. 106794
Author(s):  
Jincai Wu ◽  
Yongjian Tan ◽  
Liang Zhang ◽  
Yonghao Dou ◽  
Zhihua Song ◽  
...  
Keyword(s):  
Real Time ◽  
Quantum Communication ◽  
Compensation Method

scholarly journals Research on Lane a Compensation Method Based on Multi-Sensor Fusion

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1584 ◽  
Author(s):  
Yushan Li ◽  
Wenbo Zhang ◽  
Xuewu Ji ◽  
Chuanxiang Ren ◽  
Jian Wu
Keyword(s):  
Real Time ◽  
Sensor Fusion ◽  
Compensation Method ◽  
Measurement Unit ◽  
Vision Sensor ◽  
Vision Sensors ◽  
Cubic Polynomial ◽  
Vehicle Test ◽  
Yaw Angle ◽  
Geometric Relationship

The curvature of the lane output by the vision sensor caused by shadows, changes in lighting and line breaking jumps over in a period of time, which leads to serious problems for unmanned driving control. It is particularly important to predict or compensate the real lane in real-time during sensor jumps. This paper presents a lane compensation method based on multi-sensor fusion of global positioning system (GPS), inertial measurement unit (IMU) and vision sensors. In order to compensate the lane, the cubic polynomial function of the longitudinal distance is selected as the lane model. In this method, a Kalman filter is used to estimate vehicle velocity and yaw angle by GPS and IMU measurements, and a vehicle kinematics model is established to describe vehicle motion. It uses the geometric relationship between vehicle and relative lane motion at the current moment to solve the coefficient of the lane polynomial at the next moment. The simulation and vehicle test results show that the prediction information can compensate for the failure of the vision sensor, and has good real-time, robustness and accuracy.

A Precision Compensation Method for Space Manipulator Trajectory Planning Based on Particle Filter

2015 ◽  
Vol 742 ◽  
pp. 485-490
Author(s):  
Yi Fan Wang ◽  
Han Xu Sun ◽  
Gang Chen ◽  
Qing Xuan Jia
Keyword(s):  
Particle Filter ◽  
State Space ◽  
Real Time ◽  
Process Parameters ◽  
Trajectory Planning ◽  
Control Variable ◽  
Compensation Method ◽  
Statistical Process ◽  
Space Manipulator ◽  
Space Equation

A precision compensation method for space manipulator trajectory planning is presented for improving the accuracy during the execution of a task. First, the control process is described by using a state space equation. Second, process parameters are estimated in real-time using particle filter. Then, the system’s real time operational reliability is calculated based on the state space equation and process parameters. Finally, a control variable compensation strategy is given based on the theory of Statistical Process Control. Simulations show that this method effectively improves the accuracy and stability of space manipulator control system.

Real-time thermal error compensation method for robotic visual inspection system

2014 ◽  
Vol 75 (5-8) ◽  
pp. 933-946 ◽  
Author(s):  
Shibin Yin ◽  
Yin Guo ◽  
Yongjie Ren ◽  
Jigui Zhu ◽  
Shourui Yang ◽  
...  
Keyword(s):  
Real Time ◽  
Error Compensation ◽  
Visual Inspection ◽  
Thermal Error ◽  
Compensation Method ◽  
Inspection System ◽  
Thermal Error Compensation
Sign in / Sign up

Export Citation Format

Share Document