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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.39 [2010] >
IJMS Vol.39(4) [December 2010] >
| Title: | Role of oceanography in naval defence |
| Authors: | Swain, J
Umesh, P A
Harikrishnan, M |
| Keywords: | Oceanography in naval defence
Naval operational prediction
Ocean prediction system
Nearshore prediction |
| Issue Date: | Dec-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The
study of oceans is an essential aspect from strategic, economic and ocean
engineering points of view. Recent
advancements in SONAR (Sound Navigation and Ranging) technology for under water
applications including naval defence demand a clear understanding of the sound
propagation in the ocean which is vital for detection of a target. As compared
to deep waters, the detection in coastal waters is relatively a challenging
task. Detection becomes still complex in the littoral waters. To ensure success
in these highly complex oceanic regions, high resolution
descriptions/predictions of past, current and future conditions (hindcast,
nowcast and forecast) as well the analysis of open ocean, coastal, and
nearshore/littoral zones around the Indian continent is an essential
pre-requisite. At any given situation, the detection and discrimination of an
underwater target is highly dependant on the propagation characteristics of the
medium, the surface and bottom boundaries, leaving apart the efficiency of the
SONAR system and the type of the target. It can be either a SONAR performance
model or an operational model for tactical warfare; one has to have the
predicted sound speed for the 3-dimensional ocean environment concerned since
it is not always feasible to depend only on measurements. There are on-going programs of collecting and analyzing ocean and
atmospheric data and a wide range of research and development activities, some
of which are reviewed/presented in this paper with typical examples. In
addition to in-situ measurements, significant progress has been achieved in
India by demonstrating the utility of satellite based remote sensing data for
oceanographic research and applications. By utilizing the existing and on-going
experimental data from the regions of interest, it has become feasible for implementation
of an integrated “Naval Operational Ocean Prediction System” consisting of
wave, tide, circulation and internal wave models. The ocean environmental
information predicted by these ocean models shall provide necessary inputs to
the SONAR range prediction models for routine operational use, tactical
operations and simulating warfare scenarios. |
| Page(s): | 631-645 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.39(4) [December 2010]
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