Why "rate random walk" exists on gyroscpe ?

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SUMMARY

The discussion centers on the concept of "rate random walk" in the context of gyroscopes, specifically in relation to stochastic error modeling as described in the article "Stochastic Modeling of MEMS Inertial Sensors" by Petko Petkov and Tsonyo Slavov. Rate random walk refers to a rate error caused by white noise in angular acceleration, which can affect the accuracy of angular rate measurements. External influences, such as torque and measurement noise, contribute to this phenomenon, highlighting the complexities of sensor accuracy in inertial measurement systems.

PREREQUISITES
  • Understanding of stochastic error modeling
  • Familiarity with MEMS (Micro-Electro-Mechanical Systems) technology
  • Knowledge of angular rate and acceleration concepts
  • Basic principles of noise in sensor measurements
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This discussion is beneficial for engineers, researchers, and students involved in sensor technology, particularly those focusing on MEMS inertial sensors and their error modeling techniques.

kawabonga
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hi
I read an article about stochastic error modeling, and I didn't understand this extract about error sources :
Angular random walk. This is an angular error process which is due to white noise in angular rate.
Rate random walk. This is a rate error due to white noise in angular acceleration.
how can the "rate random walk" be present, while the gyroscope directly angular rate ?
the article's title is : "Stochastic Modeling of MEMS Inertial Sensors " by Petko Petkov and Tsonyo Slavov
 
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Some external influences can exert a torque on the system. It could also be related to your measurement which will have some noise.
 
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