 | Krishnabrahmam, V. |
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 | Defence R and D in UK: Some Impressions
Author : Krishnabrahmam, V.
Source : Defence Science Journal ; Vol:42(2) ; 1992 ; pp 127-129
Subject : 355 Defence Sciences
Keywords : Defence research;Defence
Abstract : Abstract not available. |
| | Guided Missile with an Intelligent Agent
Author : Krishnabrahmam, V.;Bhardwaj, N. ;Swamy, K.N.;Sarma, V.V.S.
Source : Defence Science Journal ; Vol:50(1) ; 2000 ; pp 25-30
Subject : 629.762 Missiles;629.7 Aeronautics
Keywords : Guided missiles;Proportional navigational algorithm;Targets;Fly by wire technology;Control loops
Abstract : Guided missiles involve the use of a conventional deviated pursuit course like proportional navigation algorithm and its variants, which is optimal when the speed advantage of the guided missile is very high and the target maneouvering is minimal. Against the present-day aircraft, which employs fly-by-wire technology for high maneouverability and high speed, missiles need to have a much higher speed advantage or to use a combination of artificial intelligence and modern control algorithms. Results of simulation of pursuit and evasion with an autonomous intelligent agent incorporated in the control loop are presented. |
| | Expert System for Signature Analysis
Author : Kalyani, K. ;Lyyengar, K.R.S.;Krishnabrahmam, V.
Source : Defence Science Journal ; Vol:37(4) ; 1987 ; pp 495-505
Subject : 681.3 Computer Science
Keywords : Structureborne ;Machinery
Abstract : Vibrating Machinery Noise,-airborne, structureborne or waterborne-has a signature characteristic of the combination of machinery, its mounting, load coupling, and the structure. FFT and RTA are standard techniques for obtaining power spectral density (PSD) of the noise from the source. In this paper a technique of extraction of features from the PSD, and classification of the sources is presented. An expert system is reported which classifies if the same sources has appeared second time. It also gives the degree of confidence to which the classification is made to the operator. |
| | Design By Simulation: Antitorpedo Decoy
Author : Krishnabrahmam, V.
Source : Defence Science Journal ; Vol:50(2) ; 2000 ; pp 119-122
Subject : 623.8 Naval Science;623.41 Weapon Systems
Keywords : Torpedo submarine encounter;Monte' Carlo simulation
Abstract : "Decoys and countermeasures in conjunction with the target are modelled as generic two-target problem, Design-by-simulation method is reported. Two-target problem relevant to a torpedo-submarine encounter is analysed using Monte' Carlo simulation. This illustrates the utility of the method in generating and verifying tactics of deployment of decoys to convert a threat into Buridon's donkey (who could not decide which stack of hay to choose). Extension to planning of countermeasures for missiles is indicated. " |
| | Strategy to Emerge from Technology Trap
Author : Krishnabrahmam, V.
Source : Defence Science Journal ; Vol:44(1) ; 1994 ; pp 81-85
Subject : 62.008.1 Technology Policy
Keywords : Military technology ;War winning technologies
Abstract : Abstract not available. |
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