Nav Module 2 Flashcards
What is the Purpose of the ESGN?
Purpose of ESGN is to provide continous and accurate navigtional data for use by the SWS and CCS. Position, Velocity and Attitude.
Other that Position what does the ESGN provide?
Velocities, Attitude and Heading.
What is the Purpose of FS?
It is a Frequency and Time Standard, Used to Phase-lock oscillator or increment counters in other Equipment. Syncronise other equipment with UTC.
List the Outputs of the IFS?
5Mhz–((PRS)),,1Mhz–((ESGN)),,1PPS– ((NTDS, UTC, PRS, EEC, SDS.))
1PPS Optical fibre to MFC.
Where does 1PPS go?
Navigation Subsystems, FC, SDS, COMMAND.
Full calibration on ESGN’s?
NOP 2B full calibration in 10 days
What does NSS do for ESGN’s?
External Fix Data, Velocity correction
What Program Processes NSS DATA?
NON (NSS Operational Navigation program)
What 3 Mode does NSS operate in?
Depth 4000 Fathoms, Velocity, Ready
What are the 4 Major ESGN units?
EEC unit 1, SPH unit 2, SIS unit 3, EMI unit 4
What do we get from GPS?
Calculates Longitude, Latitude, Time, Speed and attitude.
How many Satellites do we need for a FIx?
4
What do the EID’s communicate with?
NAVAIDS, MFC, SWS Nav-ship interface and SDS.
What is the Process of fault isolation?
Fault Detection, Isolation, Corrective, Test Verification.
What type of Testing is carried out?
Manual and Automatic.
