Institution
Defence Research Agency
About: Defence Research Agency is a based out in . It is known for research contribution in the topics: Synthetic aperture radar & Radar. The organization has 1211 authors who have published 1109 publications receiving 31542 citations.
Topics: Synthetic aperture radar, Radar, Silicon, Radar imaging, Alloy
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a minimum toughness of 125 MPa m 1 2 at a temperature of 0°C and a loading rate of 104 MPam 1 2 /s is proposed.
19 citations
TL;DR: In this article, bending and membrane consistent mass matrices are derived for a triangular flat facet finite element for the analysis of general thin shells, and numerical results for natural frequencies are compared to known solutions of example problems and to a simple experiment on a folded plate.
18 citations
TL;DR: In this article, a contour integral is proposed for the evaluation of stress intensity factors, which utilizes the exact solution of a loaded crack in an infinite sheet as an auxiliary solution.
18 citations
TL;DR: In this article, a Petzval objective lens which is passively athermalized over the temperature range of minus 20 degrees Celsius to plus 50 degrees Celsius is described, and a diamond turned hybrid refractive-diffractive element is employed.
Abstract: The development of a Petzval objective lens which is passively athermalized over the temperature range minus 20 degrees Celsius to plus 50 degrees Celsius is described. The lens is compatible with a latest generation uncooled staring array imager operating in the far infrared band, currently under development at the UK Defence Research Agency (DRA). In order to minimize the number of lens components which are required, a diamond turned hybrid refractive-diffractive element is employed. Design options are presented and the manufacturing issues relating to the diffractive surface are described. The goal is to produce a cost effective solution rather than placing the emphasis on achieving the ultimate in performance. Results from optical performance tests are given, including interferometry at a range of temperatures and broadband MTF.
18 citations
TL;DR: In this paper, a novel laser resonator concept based on the self-imaging properties of multimode waveguides is proposed, which is predicted to produce TEM00 output with low round-trip loss and excellent mode discrimination.
Abstract: Novel laser resonator concepts based on the self-imaging properties of multimode waveguides are proposed. These resonators have widely applicable designs and are predicted to produce TEM00 output with low round-trip loss and excellent mode discrimination.
18 citations
Authors
Showing all 1211 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Stephen M. Smith | 128 | 501 | 140104 |
| Jonathan Knight | 88 | 625 | 37720 |
| M. S. Skolnick | 73 | 728 | 22112 |
| Alan Tennant | 70 | 433 | 16870 |
| Richard J. Needs | 69 | 352 | 19528 |
| Dan S. Henningson | 66 | 369 | 19038 |
| John Rarity | 65 | 434 | 15562 |
| Michael J. Uren | 44 | 294 | 8408 |
| Leigh T. Canham | 42 | 160 | 18268 |
| A. G. Cullis | 40 | 161 | 11320 |
| Richard A. Pethrick | 38 | 410 | 6918 |
| David S. Lee | 38 | 113 | 8580 |
| Neil Gordon | 37 | 181 | 37011 |
| Pierfrancesco Lombardo | 36 | 301 | 5018 |
| Peter John Roberts | 31 | 86 | 6679 |