Institution
Swedish Defence Research Agency
Government•Stockholm, Sweden•
About: Swedish Defence Research Agency is a government organization based out in Stockholm, Sweden. It is known for research contribution in the topics: Radar & Laser. The organization has 1413 authors who have published 2731 publications receiving 56083 citations. The organization is also known as: Totalförsvarets forskningsinstitut.
Papers published on a yearly basis
Papers
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TL;DR: In this article, N,N H-Dinitrourea was prepared through nitration of urea at low temperature in mixed acids in 67 % yield, and the prepared material was pure and found to be stable at room temperature.
Abstract: N,N H-Dinitrourea was prepared through nitration of urea at low temperature in mixed acids in 67 % yield. The prepared material was pure and found to be stable at room temperature. The properties of N,N H-dinitrourea were analysed by: TG, DSC, ignition test in Wood's metal bath, NMR, MS, FT-IR, gaspycnometry and BAM impact and friction sensitivity tests. N,N H-Dinitrourea was found to have a very high density and positive oxygene balance. It was, however, found to be sensitive both to impact and friction.
18 citations
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08 Jan 2007
TL;DR: In this paper, the CAWAPI project participants have contributed steady and unsteady viscous simulations of a full-scale, semi-span model of the F-16XL aircraft.
Abstract: Nine groups participating in the CAWAPI project have contributed steady and unsteady viscous simulations of a full-scale, semi-span model of the F-16XL aircraft. Three different categories of flight Reynolds/Mach number combinations were computed and compared with flight-test measurements for the purpose of code validation and improved understanding of the flight physics. Steady-state simulations are done with several turbulence models of different complexity with no topology information required and which overcome Boussinesq-assumption problems in vortical flows. Detached-eddy simulation (DES) and its successor delayed detached-eddy simulation (DDES) have been used to compute the time accurate flow development. Common structured and unstructured grids as well as individually-adapted unstructured grids were used. Although discrepancies are observed in the comparisons, overall reasonable agreement is demonstrated for surface pressure distribution, local skin friction and boundary velocity profiles at subsonic speeds. The physical modeling, be it steady or unsteady flow, and the grid resolution both contribute to the discrepancies observed in the comparisons with flight data, but at this time it cannot be determined how much each part contributes to the whole. Overall it can be said that the technology readiness of CFD-simulation technology for the study of vehicle performance has matured since 2001 such that it can be used today with a reasonable level of confidence for complex configurations.
18 citations
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TL;DR: In this article, a special technique in photon counting is the "time-related single photon counting" (TCSPC), which can be utilized together with short pulse (ps) lasers to achieve very high range resolution and accuracy (mm level).
Abstract: Photon counting techniques using direct detection has recently gained considerable interest within the laser radar
community. The high sensitivity is of special importance to achieve high area coverage in surveillance and mapping
applications and long range with compact systems for imaging, profiling and ranging. New short pulse lasers including
the super continuum laser is of interest for active spectral imaging. A special technique in photon counting is the "time
correlated single photon counting" (TCSPC). This can be utilized together with short pulse (ps) lasers to achieve very
high range resolution and accuracy (mm level). Low average power lasers in the mW range enables covert operation
with respect to present laser warning technology.
By analyzing the return waveform range and shape information from the target can be extracted. By scanning the beam
high resolution 3D images are obtained. At FOI we have studied the TCSPC with respect to range profiling and imaging.
Limitations due to low SNR and dwell times are studied in conjunction with varying daylight background and
atmospheric turbulence. Examples of measurements will be presented and discussed with respect to some system
applications.
18 citations
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TL;DR: Investigating the interaction of the toxin ricin and its B-chain with immobilised glycolipids in supported phospholipid membranes by surface plasmon resonance shows promising results.
18 citations
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12 Nov 2007TL;DR: A dual band LNA that can be switched between two bands for IEEE 802.1 la/b/g WLAN applications and is tunable within each band and the tuning is incorporated by on-chip varactors.
Abstract: This paper presents a dual band LNA that can be switched between two bands (2.4 GHz & 5.2 GHz) for IEEE 802.1 la/b/g WLAN applications. The LNA is also tunable within each band and the tuning is incorporated by on-chip varactors. The test chip consists of two fully integrated narrow-band tunable LNAs along with SPDT switch. For power saving one LNA can be switched off. The technology process is 0.2 mum GaAs offered by OMMIC. The LNA can achieve a relatively good performance over the two bands as demonstrated by simulation. With a 3V supply, the LNA has a gain of 26.2 dB at 2.4 GHz and 21.8 dB at 5.2 GHz and the corresponding NF varies between 2.07 dB and 1.84 dB, respectively. The LNA has an IIP3 of -7 dBm at 2.4 GHz and -1.6 dBm at 5.2 GHz.
18 citations
Authors
Showing all 1417 results
Name | H-index | Papers | Citations |
---|---|---|---|
Anders Larsson | 80 | 1307 | 33995 |
Anders Johansson | 75 | 538 | 21709 |
Anders Eriksson | 68 | 679 | 19487 |
Dan S. Henningson | 66 | 369 | 19038 |
Bengt Johansson | 66 | 635 | 19206 |
Anders Sjöstedt | 63 | 196 | 11422 |
Björn Johansson | 62 | 637 | 16030 |
Mats Gustafsson | 61 | 520 | 18574 |
D. G. Joakim Larsson | 58 | 151 | 13687 |
Anders Larsson | 54 | 198 | 55761 |
Mats Tysklind | 53 | 250 | 17534 |
Jerker Fick | 51 | 143 | 8787 |
Erik Johansson | 50 | 114 | 9437 |
Göran Finnveden | 49 | 193 | 12663 |
Ian A. Nicholls | 45 | 194 | 7522 |