This paper reintroduces a novel range ambiity resolution technique, invented by Carmen Paland fvst reported in 1962, called nonlinear suppression. A set of M unique modulations is selected which have desirable (mutually dispersive) cross-correlation properties The transmitted pulse train is constructed by successively modulating each pulse with one of the M modulations. The received data are processed in M independent receiver channels with each channel Eorresponding to a single modulation. Ideally, the channels are designed such that the output response is only dependent upon one of the modulations (versus all M). This is accomplished to a useful extent with Palem"s technique by M v e l y removing unwanted contributions on a range cell by range cell basis. By passing the received data through an appropriate memoryless nonlinearity, the process preferentially removes energy from data responsive to each of the other M-I codes.

This paper presents analytic, simulation, and measured results of using Gold sequences for radar pulse compression coding. Gold coded waveform performance is characterized using the ambiguity function diagram, synonymous with matched filtering performance. Results indicate Gold coded waveforms offer significant improvement .in radar clutter suppression, resolution, and unambiguous range properties.

Physical vapor deposited nickel catalyst layers of 10, 50, 100, 200, 350, and 500  were granulated using hydrogen plasma for varying times to determine an effective carbon nanotube (CNT) growth process using microwave plasma enhanced CVD (MPECVD). Nickel was deposited via sputtering or evaporation. The catalyst granule size, density, and resulting CNTs were analyzed. Sputtered nickel of 50  with 5 minutes of hydrogen plasma pretreatment resulted in the most effective CNT growth.

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We have demonstrated that xenon difluoride (XeF2) etches thin films of YBa2Cu3O7−x, the superconducting form of yttrium–barium–copper–oxide (YBCO), during dry etch processing. Both c-axis and mixed a/c-axis YBCO films show evidence of such etching with a axis being more reactive. Profiles of YBCO films examined by ESCA show that the surfaces of both etched and unetched films are barium rich at the expense of yttrium. After XeF2 etching, fluorine was found to be present to a depth of at least 40 nm. Despite the etching and the presence of fluorine in the YBCO films, the superconducting transition temperature, Tc, was unaffected by the XeF2 treatment. © 2005 American Vacuum Society. [DOI: 10.1116/1.1978894