Výsledky vyhledávání - "J. M. Headrick"

Publikováno v: Radio Science. 33:1045-1054

Efforts to extend radar range by an order of magnitude with use of the ionosphere as a virtual mirror started after the end of World War II. A number of HF radar programs were pursued, with long-range nuclear burst and missile launch detection demons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b942d917ea5870c618aacadef88c8af
https://doi.org/10.1029/98rs01013

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RADARC model comparisons with Amchitka radar data

Autor: J. F. Thomason, B. T. Root, J. M. Headrick

Publikováno v: Radio Science. 30:729-737

Data collected with the AN/TPS-71 relocatable over-the-horizon radar (ROTHR) has been used to validate the RADARC Model. For the first 10 days of January, April, and July, 1200 and 0000 UTC, the vertical ionograms, oblique backscatter soundings, rada

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f6d2f8de4db8e7a6f96ef2f4122f82c
https://doi.org/10.1029/94rs03184

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Maternal Influence on the Resistance of Sweet Corn Lines to Kernel Infection byFusarium moniliforme

Autor: J. M. Headrick, J K. Pataky

Publikováno v: Phytopathology. 81:268

Sweet corn inbred lines resistant and susceptible to kernel infection by Fusarium moniliforme were hand pollinated to produce parental, F 1 , F 2 , F 3 , and backcross generations with reciprocals to examine maternal effects on resistance. Silks of h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef2d370dedee170ba2f7e224f9bc93b3
https://doi.org/10.1094/phyto-81-268

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Relationships Among Carbohydrate Content of Kernels, Condition of Silks After Pollination, and the Response of Sweet Corn Inbred Lines to Infection of Kernels byFusarium moniliforme

Autor: J. M. Headrick, Jerald K. Pataky, John A. Juvik

Publikováno v: Phytopathology. 80:487

(...) Quantity and concentration of kernel carbohydrates were not related to infection of kernels by F.m. Asymptomatic infection of kernels by F.m. was less for inbreds with silks that were green and actively growing at inoculation than for inbreds w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acdc76959b23d52f61af1f088a7bd7d0
https://doi.org/10.1094/phyto-80-487

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Tests of remote skywave measurement of ocean surface conditions

Autor: J. L. Ahearn, J. M. Headrick, D.B. Trizna, S. R. Curley

Publikováno v: Proceedings of the IEEE. 62:681-687

A pulse-Doppler backscatter radar operating in the HF band was used to test the feasibility to measure ocean surface motions in the North Atlantic Ocean under a variety of environmental conditions. Using the ionosphere as a part of the propagation pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::516247a8986f7e06d271c3e633aab707
https://doi.org/10.1109/proc.1974.9508

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Management of Common Rust on Sweet Corn with Resistance and Fungicides

Autor: J. K. Pataky, J. M. Headrick

Publikováno v: Journal of Production Agriculture. 2:362-369

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7371e54d396e69fc64d1f75353bb6af2
https://doi.org/10.2134/jpa1989.0362

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Sea backscatter at HF: Interpretation and utilization of the echo

Autor: J. M. Headrick, D.E. Barrick, D. D. Crombie, R. W. Bogle

Publikováno v: Proceedings of the IEEE. 62:673-680

Theories and concepts for utilization of HF sea echo are compared and tested against surface-wave measurements made from San Clemente Island in the Pacific in a joint NRL/ITS/NOAA experiment. The use of first-order sea echo as a reference target for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c858d87f086bb8abf7ada27d147cd22
https://doi.org/10.1109/proc.1974.9507

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Estimating the Scattering Coefficient of the Ocean Surface for High- Frequency Over-the-Horizon Radar

Autor: J. M. Headrick, R. O. Pilon

Several methods for determining the radar scattering coefficient of the ocean surface, sigma (o), all based on the technique developed by Trizna, have been applied to two sets of High-Frequency Over-the-Horizon data. One specific method is found to y

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42d498346d58cb6c58c2bd1707451d35
https://doi.org/10.21236/ada165722

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Special Information on High-Frequency Radar. Part 15

Autor: J. F. Thomason, W. C. Headrick, J. M. Headrick, J. M. Hudnall

A good real time description of the ionospheric transmission path will be essential for effective operational use of the radar. The major purpose of this experiment is to explore analysis techniques that use echoes from the earth surface as a base to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f522fa2b80a23ab2be94ff421165a992
https://doi.org/10.21236/ada472346

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