Luke Rosenberg

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Knowledge of radar sea-clutter phenomenology allows accurate models to be developed for assessing target detection performance. The majority of work in this area has been at low-grazing angles from clifftops or wave tanks and does not consider scattering in the high grazing angle region beyond 10◦. To improve our understanding at high grazing angles 15◦ to(More)
We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at sqrt[s(NN)] = 130 GeV. We observe <pi(-)>/<pi(+)> = 1.00+/-0.01(stat)+/-0.02(syst), <K->/<K+> = 0.91+/-0.07(stat)+/-0.06(syst), and <p>/<p> = 0.60+/-0.04(stat)+/-0.06(syst). The <K->/<K+> and <p>/<p> ratios give a(More)
An estimated probability distribution of the backscatter is commonly used to determine the threshold for distinguishing targets from clutter at a given false alarm rate. Data collected at high grazing angles (15◦−45◦) by the Defence Science Technology Organisation’s Ingara fully polarimetric X-band radar demonstrates that the commonly used K-distribution is(More)
J.Micha lowski, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, W.Skulski, S.G.Steadman, P.Steinberg, G.S.F.Stephans, M.Stodulski, A.Sukhanov, J.-L.Tang, R.Teng, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, B.Wadsworth, F.L.H.Wolfs,(More)
The charged-particle pseudorapidity density dN(ch)/d eta has been measured for Au+Au collisions at sqrt[s(NN)] = 130 GeV at RHIC, using the PHOBOS apparatus. The total number of charged particles produced for the 3% most-central Au+Au collisions for /eta/<or=5.4 is found to be 4200+/-470. The evolution of dN(ch)/d eta with centrality is discussed, and(More)
This Letter describes the measurement of the energy dependence of elliptic flow for charged particles in Au+Au collisions using the PHOBOS detector at the Relativistic Heavy Ion Collider. Data taken at collision energies of square root of s(NN)=19.6, 62.4, 130, and 200 GeV are shown over a wide range in pseudorapidity. These results, when plotted as a(More)
We present the first measurement of the pseudorapidity density of primary charged particles in Au+Au collisions at root square[s(NN)] = 200 GeV. For the 6% most central collisions, we obtain dN(ch)/d(eta)/(/eta/<1) = 650+/-35(syst). Compared to collisions at root square[s(NN)] = 130 GeV, the highest energy studied previously, an increase by a factor of(More)
Rare-event Monte Carlo (MC) simulation is useful for estimating the threshold level for radar systems where conventional methods do not work and crude MC is not feasible. In this paper, a conditional Monte-Carlo technique, well-adapted to subexponential clutter distributions, is successfully applied to high-resolution airborne maritime radar systems that(More)