Defence Avionics Research Establishment

<em>It is a known fact that the technology in this era is reaching new heights, with hardware and software hand in hand with each other. It seems as though the hardware advancements have become stagnant with the advancements in software technologies. But, hardware still remains a highly challenging are with a lot of problems still unsolved. (There are a lot of sensors, control systems and processing units used in daily life as well as in military applications.) In this direction, we have forwarded to solve one such issue in the electronics involved in the daily life and also in the warfare. One such vitally used sensor is gyroscope. A gyroscope is a very important device which is employed to yield the position and the angle of movement of the device in which it is installed. But, experiences a lot of noise, while functioning in actual environment. Thus to overcome that problem, we have come up with a solution. We have used a Micro-Electromechanical System (MEMS) based gyroscope with a low pass filter. This is more efficient than the conventional gyroscopes. It also has a lot of ease to use features and military standard compatibility. Therefore, in the near future we expect it to be fully replacing the existing gyro-technology</em><strong>.</strong>

Ballistic Trajectory Computation Program is a part of weapon delivery system and it is responsible for accurate delivery of the weapon. Mach number (M) and Coefficient of drag (Cd) are critical parameters in external Ballistic computation and are used in computation of Impact Point. Cd Vs M relation is not available in a functional form. These data are available in discrete form from Wind Tunnel. To accomplish this polynomial curve fitting is done. Different numerical methods have been tried and compared to find best polynomial fit. Polynomial relation is found between Cd and M for many cases using Least Square Approximation with Crout's method. It is observed, that the results obtained by this approach are of very high accuracy and have improved the computation of Ballistic path. A comparative result analysis between the Wind Tunnel data and the estimated data is presented. Results obtained were field tested and found that the performance was within the expected accuracy in determining various parameters such as Forward Throw and Impact Point.

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text G. W. McMahon and P. G. Cielo, "Fiber optic hydrophone sensitivity for different sensor configurations," Appl. Opt. 18, 3720-3722 (1979) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article