Final answer:
ZUPT involves making periodic adjustments to an inertial navigation system while it is on the move to correct for drift and maintain accurate position measurements. The frequency of ZUPT computation varies depending on the system and its requirements. It can range from several times per second in high-end navigation systems to once every few seconds in consumer-grade devices.
Step-by-step explanation:
In the context of a launcher, ZUPT stands for Zero Velocity Update and is used to enhance the accuracy of an inertial navigation system. ZUPT involves making periodic adjustments to the system while it is on the move in order to correct for drift and maintain accurate position measurements.
The frequency at which ZUPT is computed depends on the specific system and its requirements. It can vary from system to system and may be set to occur at regular intervals, such as every second or every few seconds. The exact frequency is typically optimized to balance the need for accuracy with computational efficiency.
For example, in a high-end navigation system used in aerospace applications, ZUPT may be computed at a rate of several times per second to ensure precise positioning. On the other hand, in a consumer-grade device like a smartphone, ZUPT may be computed at a lower rate, such as once every few seconds, to conserve battery life.