Slide 28 of 94
Notes:
Dialogue: The SRP/PDS is composed of two integrated subsystems that are housed in separate compartments: the SRP and PDS. The SRP uses a electrically driven north seeking gyrocompass. The SRP provides heading, elevation and launcher slope. The PDS uses two encoders on the vehicle final drives and orientation data from the SRP to determine position location. Initial alignment of the system takes about eight minutes. However, allowing the SRP to stabilize 2 1/2 additional minutes (i.e., by not moving the LLM or the launcher) after the SRP READY is displayed will increase the time before realignment from 15 minutes to 60 minutes for rocket munitions and from 11 to 28 minutes for the Army TACMS (compensated alignment).
