Asynchronous Message Transmission Technique for Latency Requirements in Time Critical Ship-borne System

N. P. Shrivastava; S. Shrotriya

doi:10.14429/dsj.66.8502

N. P. Shrivastava Weapons and Electronics Systems Engineering Establishment, New Delhi
S. Shrotriya Weapons and Electronics Systems Engineering Establishment, New Delhi

DOI: https://doi.org/10.14429/dsj.66.8502

Keywords: Inertial navigation system, latency, asynchronous message, time stamp

Abstract

A solution to data ageing requirements in time critical ship system like fire control system is presented. In an operational sea borne platform, navigation requirements for the onboard systems are fulfilled by ring laser gyro-based inertial navigation system. For critical systems like fire control system, navigational data must be delivered in real time without any delay. However due to delay occurring in processing of raw information and transmission of data on interface bus some latency is introduced. Algorithm for an asynchronous message transmission technique from inertial navigation system to user system to meet its latency requirements is discussed. Latency requirement is achieved by sending a separate message with the time stamp for the instance the first byte of 100 Hz attitude data is received at the processing computer of navigation system.

Author Biographies

N. P. Shrivastava, Weapons and Electronics Systems Engineering Establishment, New Delhi

Mr Naveen Prakash Shrivastava did his BE (Honrs) in ECE from Maharishi Dayanand University and is working as Scientist ‘C’ in DRDO, Delhi. Presently, pursuing his MTech at IIT Delhi. His area of work includes fusion of navigation data from multiple sensors and indigenisation of navigation complex system for future platforms.

S. Shrotriya, Weapons and Electronics Systems Engineering Establishment, New Delhi

Mr Commodore Shishir Shrotriya, received his MTech from IIT Delhi. He is currently posted at Weapons and Electronics Systems Engineering Establishment (WESEE) as Addl. Director General. He also held other important assignment as Director Software Engineering Group (SEG) and has authored/presented various papers at International and National level seminars.