About
Changelog
Start simulation
Presets
Shape & Inertia
Control
Estimation
Initial conditions
Other
Configuration Presets
Preset
Load
Spacecraft inertia (principal axes)
J
x
kg·m²
J
y
kg·m²
J
z
kg·m²
Spacecraft dimensions
Length (x)
m
Width (y)
m
Height (z)
m
Control type
Type
None (torque-free)
Inertial pointing (linear control)
Inertial pointing (nonlinear control)
Control law parameters
Proportional gain k
p
Derivative gain k
d
Target inertial attitude quaternion
q
x
q
y
q
z
q
w
Enable attitude estimation
Read about the MEKF algorithm implemented in Pytellite here:
https://github.com/caba-llero/Error-state-MEKF
General settings
Control law update frequency
Hz
Ground truth propagation frequency
Hz
RNG seed
Gyroscopes
Measurement frequency
Hz
ARW coefficient
rad/s
1/2
RRW coefficient
rad/s
3/2
True initial bias
rad/s
Estimated initial bias
rad/s
Initial covariance
rad
2
/s
2
Startracker/attitude sensor
Measurement frequency
Hz
Isotropic measurement accuracy
rad
Isotropic accuracy of initial measurement
rad
Initial attitude error covariance
rad
2
Angular velocity
Body frame with respect to inertial frame, in body frame coordinates
ω
x
rad/s
ω
y
rad/s
ω
z
rad/s
Attitude quaternion
Body frame with respect to inertial frame. Scalar component last
q
x
unitless
q
y
unitless
q
z
unitless
q
w
unitless
Date
Date (UTC)
YYYY-MM-DD HH:MM:SS
Keplerian orbital elements
semi major axis
km
eccentricity
unitless
inclination
deg
RAAN
deg
argument of the perigee
deg
true anomaly
deg
Simulation parameters
Maximum simulation time
s
Sample rate
Hz
Playback speed
x
Relative tolerance
Absolute tolerance