RADAR detection

But, it is substantially better than the tens of kilohertz that classic amorphous silicon or OFETs can achieve. It is also in frequency ranges of interest for many mobile communication systems and radar detection bands and, therefore, would provide sufficient capability for a range of RF opportunities. 

Yakubov, V.P., Antipov, V.B., Losev, DN. and Yuriev, I.A. Passive radar detection of radioactive pollution Application of the Conversion Research Results for International Cooperation SIBCONVERS 99. The Third International Symposium, Volume 2, pp 397-399, May 18-20, 1999. 

Gjessing, D.T., Adaptive techniques for radar detection and identification of objects in an ocean environment , IEEE J. Ocean Engineering, Vol.6, No.l, pp 5-17, 1981. 

The general objective of all radar detection procedures is to get a constant false alarm rate (CFAR) due to the fact that the test cell almost always contains clutter and noise and only in a very few cases contains radar target echo signals. The statistical model and general detection procedure, in which the detector is fixed only with regard to the noise and clutter statistic and independently to the target statistic, has been developed by Neyman and Pearson. 

Sterically stabilized liposomes are often described as stealth carriers (Stealth is a registered trade name of Sequus Inc ), so called because their ability to evade recognition by the MPS was deemed analogous to the ability of stealth bombers to avoid radar detection. 

In early 1943, American intelligence learned that the Germans were developing their own radar. In response, a new laboratory was established at Harvard to develop radar countermeasures to protect American war planes and ships from radar detection. Although this work began at MTT, the new center was moved to Harvard and called the Radio Research Laboratory. Joining the effort at Harvard in late 1943 was the Stanford University physicist Felix Bloch. Bloch had been at Los Alamos working on the bomb, but he did not like the military atmosphere at Los Alamos, where mail was routinely opened and surveillance was part of everyday Hfe. 

Table 1. A contrast between the model prediction and the radar detection.

Time (UTC) The evaporation duct prediction height (m) Radar detection Detection distance (n mile) results Comparison between the duct heights and the radar observation... 

Since it should be your policy that your drivers are required to obey all posted speed limits, the use of any type of radar detection device is, by definition, unnecessary. 

Jammers are typically barrage noise or repeater jammers. The former try to prevent aU radar detections whereas the latter attempt to inject false targets to overload processing or attempt to puU trackers off the target. A standoff jammer attempts to protect a penetrating aircraft by increasing the level of noise... 

In the past, for benign clutter conditions, radar detection performance has been limited by the presence of noise generated in the receiver. Low RCS targets flying near the Earth s surface create a problem in detection due to the interference of the clutter signal. So-called clutter limited performance analysis depends on a high-fidelity model of the clutter reflection characteristics. 

There are many applications where the physical properties of a textile substrate are combined with the electrical and shielding properties of polypyrrole. Thus polypyrrole-coated fabrics show excellent dissipation properties. In this way industrial uniforms where explosion-proof conditions or shielding fi om micro-waves are necessary can be fabricated, as well as the use of polypyrrole-coated filters where static charges could cause the explosion of flammable solvents. Other important applications are related to military equipment, as radar-absorbing sheets. The microwave response of those fabrics seems to be ideal for camouflage nets that avoid visual, near-infrared and radar detection. Textile fabrics have also applications in fiber-reinforced composite structures of different resins. 

Radar Detection in Duct Situations in Maritime Environment. 

Switch between the five available modes (upper part of the figure) using radio buttons (the five modes being WXON to activate the weather radar detection, OFF to switch it off, TST to trigger a hardware checkup, STDBY to switch it on for test only and WXA to focus detection on alerts). 

The first echoes from a near-Earth asteroid (1566 Icarus) were detected in 1968 it would be nearly another decade before the first radar detection of a main-belt asteroid (1 Ceres in 1977), to be followed in 1980 by the first detection of echoes from a comet (Encke). During 1972 and 1973, detection of 13-cm-wavelength radar echoes... 

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