Introducing SOST: An ultra-low-cost star tracker concept based on a raspberry pi and open-source astronomy software
Absolute attitude estimation sensors provide high accuracy pointing capabilities to
spacecraft, but as developed thus far, they constitute a large fraction of CubeSat mission's …
spacecraft, but as developed thus far, they constitute a large fraction of CubeSat mission's …
Image-based control for rendezvous and synchronization with a tumbling space debris
X Zhao, MR Emami, S Zhang - Acta Astronautica, 2021 - Elsevier
This paper investigates the problem of concurrent rendezvous and attitude synchronization
with a tumbling space debris. A novel formulation of the system dynamics model is first …
with a tumbling space debris. A novel formulation of the system dynamics model is first …
UAV attitude estimation based on MARG and optical flow sensors using gated recurrent unit
X Liu, X Li, Q Shi, C Xu, Y Tang - International Journal of …, 2021 - journals.sagepub.com
Three-dimensional attitude estimation for unmanned aerial vehicles is usually based on the
combination of magnetometer, accelerometer, and gyroscope (MARG). But MARG sensor …
combination of magnetometer, accelerometer, and gyroscope (MARG). But MARG sensor …
An innovative strategy for accurate thermal compensation of Gyro Bias in inertial units by exploiting a novel Augmented Kalman Filter
This paper presents an innovative model for integrating thermal compensation of gyro bias
error into an augmented state Kalman filter. The developed model is applied in the Zero …
error into an augmented state Kalman filter. The developed model is applied in the Zero …
Effective star tracking method based on optical flow analysis for star trackers
Benefiting from rapid development of imaging sensor technology, modern optical
technology, and a high-speed computing chip, the star tracker's accuracy, dynamic …
technology, and a high-speed computing chip, the star tracker's accuracy, dynamic …
Investigation of Perturbations Arising from Temperature Shock with a Symmetrical Arrangement of Flexible Elements of a Small Spacecraft
A Bormotov, D Orlov - Symmetry, 2023 - mdpi.com
This paper investigates the effect of a temperature shock on a small spacecraft with
symmetrically arranged flexible elements. A two-dimensional thermoelasticity problem is …
symmetrically arranged flexible elements. A two-dimensional thermoelasticity problem is …
A geometrical approach for the angular velocity determination using a star sensor
In this paper, a geometrical investigation of the star sensor image is performed under
dynamic conditions where the angular velocity effects are non-negligible. It is shown that …
dynamic conditions where the angular velocity effects are non-negligible. It is shown that …
A new star tracker concept for satellite attitude determination based on a multi-purpose panoramic camera
This paper presents an innovative algorithm developed for attitude determination of a space
platform. The algorithm exploits images taken from a multi-purpose panoramic camera …
platform. The algorithm exploits images taken from a multi-purpose panoramic camera …
Real‐Time Hardware‐in‐the‐Loop Tests of Star Tracker Algorithms
This paper deals with star tracker algorithms validation based on star field scene simulation
and hardware‐in‐the‐loop test configuration. A laboratory facility for indoor tests, based on …
and hardware‐in‐the‐loop test configuration. A laboratory facility for indoor tests, based on …
Kinematic model for the space-variant image motion of star sensors under dynamical conditions
CS Liu, LH Hu, GB Liu, B Yang, AJ Li - Optical Engineering, 2015 - spiedigitallibrary.org
A kinematic description of a star spot in the focal plane is presented for star sensors under
dynamical conditions, which involves all necessary parameters such as the image motion …
dynamical conditions, which involves all necessary parameters such as the image motion …