Rubidium Atomic Clock Error Modeling and Forecasting Based on Parameter Constrained Kalman Filter

2017 ◽  
Author(s):  
Guoliang Sun
Keyword(s):  
Kalman Filter ◽  
Atomic Clock ◽  
Error Modeling ◽  
Clock Error ◽  
Modeling And Forecasting

scholarly journals Turbulence Error Modeling and Restriction for Satellite Attitude Determination System Based on Improved Maximum Correntropy Kalman Filter

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 139420-139437
Author(s):  
Jiongqi Wang ◽  
Yuyun Chen ◽  
Bowen Hou ◽  
Bowen Sun ◽  
Jian Peng ◽  
...  
Keyword(s):  
Kalman Filter ◽  
Attitude Determination ◽  
Error Modeling ◽  
Satellite Attitude ◽  
Determination System

Implementation of optimal automatic steering of atomic clock timescale

2021 ◽  
pp. 51-55
Author(s):  
Konstantin G. Mishagin ◽  
Sergey Yu. Medvedev
Keyword(s):  
Kalman Filter ◽  
Stationary Process ◽  
Atomic Clock ◽  
Linear Quadratic Regulator ◽  
Quality Characteristics ◽  
Hydrogen Maser ◽  
Linear Quadratic ◽  
Common View ◽  
Automatic Steering ◽  
Navigational Systems

The problem of physical implementation of atomic timescales maximally adjusted to the national timescale UTC(SU) for working and secondary standards is considered. Results of analysis of stationary process of hydrogen maser timescale automatic steering to UTC(SU) using common view technique based on the signals of global navigational systems are presented. Calculation of Kalman filter and linear quadratic regulator parameters is described. Theoretical and experimental estimations of automatic steering quality characteristics are compared and discussed. The results obtained can be used to improve the accuracy of timescales on working and secondary standards.

A mathematical model for the atomic clock error

Metrologia ◽  
2003 ◽  
Vol 40 (3) ◽  
pp. S257-S264 ◽  
Author(s):  
L Galleani ◽  
L Sacerdote ◽  
P Tavella ◽  
C Zucca
Keyword(s):  
Mathematical Model ◽  
Atomic Clock ◽  
Clock Error

scholarly journals Irnss Orbit and Clock Bias Estimation using Navic Ground Receiver Data: Extended Kalman Filter

2019 ◽  
Vol 9 (2) ◽  
pp. 713-717
Keyword(s):  
Kalman Filter ◽  
Extended Kalman Filter ◽  
Orbit Determination ◽  
Sequential Estimation ◽  
Estimation Algorithm ◽  
Time Instant ◽  
Tropospheric Delay ◽  
Bias Estimation ◽  
Satellite Clock ◽  
Clock Error

The aim of this work is to precisely estimate the IRNSS satellite’s orbit and clock errors using NavIC receiver data. Orbit determination is required to precisely calculate the user/receiver position on the Earth. In this study, Bengaluru, Surat, Kolkata, and Hyderabad’s NavIC ground receivers’ data is considered for orbit estimation. The pseudo-range measurements received by the ground receivers have multiple errors added due to ionospheric delay, tropospheric delay, multipath delays, satellite clock errors, and some unmodeled effects. But, the major factor accounting for errors is the satellite clock error. Hence, along with position and velocity of the satellite, even the clock correction is estimated using Extended Kalman Filter (EKF). EKF is a sequential estimation algorithm which estimates satellite position, velocity and clock error at each time instant. In this paper, results of all seven IRNSS satellite’s orbit determination are discussed.

scholarly journals A mathematical model for the atomic clock error in case of jumps

Metrologia ◽  
2015 ◽  
Vol 52 (4) ◽  
pp. 514-521 ◽  
Author(s):  
C Zucca ◽  
P Tavella
Keyword(s):  
Mathematical Model ◽  
Atomic Clock ◽  
Clock Error
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