Skip to main content

Questions tagged [imu]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1 vote
0 answers
54 views

Use local acceleration and angular velocity to calculate rotation matrix

Can I ask if there are any python packages that can fuse local acceleration and angular velocity and get rotation matrix? Thank you!
percy_liu's user avatar
2 votes
1 answer
441 views

How to calculate initial Rotation Matrix/ Euler Angles/ Quaternion for IMU data (gyroscope and accelerometer)?

I am trying to develop a code to track vehicle using GNSS/GPS data (NMEA) and IMU data (Gyroscope x,y,z; accelerometer x,y,z) i.e. dead reckoning using kalman filter. I know there's enough literature ...
Kanika's user avatar
  • 39
1 vote
0 answers
87 views

Do Curiosity and Perseverance have gyrocompasses? Has any rover had one? If so, what kind and how do they work?

There is discussion of a gyrocompass in comments on the page How does Curiosity know how to point and move it's high gain antenna in real time? but so far I don't think there is a hard "Yes&...
uhoh's user avatar
  • 149k
3 votes
1 answer
168 views

What causes a visual odometry failure?

Exploring the amazing Curiosity Analysts's notebook*, I came across the following in the "Sol 2931-2932 uplink report": However, the Sol 2929 drive was halted early (well short of location &...
0xDBFB7's user avatar
  • 2,239
1 vote
0 answers
72 views

What IMU did Beresheet fly?

Is there public information on the inertial measurement unit used by Beresheet during its landing attempt? More generally, is there information on the hardware flown on that vehicle?
ChrisR's user avatar
  • 6,180
3 votes
0 answers
67 views

Detailed description of space shuttle major and minor GNC loops

Warning: repetitive question ahead. Please skip if you're tired of splitting hairs on these things. Is there a detailed description of the major and minor GNC loops of the space shuttle? I've learned ...
user avatar
1 vote
1 answer
98 views

Noninertial effects a problem in strapdown IMUs?

Unlike stable-platform IMUs, which are fixed in space and therefore inertial, strapdown IMUs are fixed to the vehicle's body and therefore noninertial. Would noninertial effects distort the strapdown ...
user avatar
2 votes
0 answers
348 views

Falcon 9: Stable platform or strapdown IMU?

What type of IMU does the Falcon 9 use? Is it a stable platform aligned with a global frame by gimbals? Or is it a strapdown system fixed to the body of the rocket and therefore aligned not with a ...
user avatar
3 votes
1 answer
183 views

Was space shuttle position corrected for before orbital insertion?

The space shuttle derived its attitude and state vector primarily from its integrating accelerometers and rate gyros. Data from the accelerometers and rate gyros came in at a low rate (0.25-0.5 Hz, or ...
user avatar
4 votes
1 answer
100 views

Space shuttle state propagation

Space shuttle training manuals say the GNC system obtains state information from the IMU platform at a low rate (0.25-0.5Hz) and that state propagation algorithms estimate the vehicle's state vector ...
user avatar
2 votes
1 answer
170 views

Space shuttle position and velocity calculations from IMUs?

How were the space shuttle's rate gyro and accelerometer outputs converted into reliable position and velocity vectors before being fed into GNC software? Is there a document detailing those ...
user avatar