Ionospheric Predictions Undertaken as Part of a Study of O and M Radar Performance.
LEICESTER UNIV (UNITED KINGDOM) DEPT OF PHYSICS
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The aim of the study was to examine the influence of ionospheric propagation conditions on the performance of ROTHR type radar installations. Possible sites for locating the radars was specified as was the viewing area of interest. The final objective of the study was to determine the comparative sensitivity over the full beam width for ranges between 1000 and 3000 km from the radars. The ionospheric models were to represent conditions of low, medium and high sun spot numbers and include the normal diurnal and seasonal variations of the ionosphere. After discussions with the sponsors. the parameters required to specify the system performance were identified and the program divided into two work packages which were to be undertaken at Leicester and RSRE respectively. The work at Leicester involved the calculation of the ionospheric propagation conditions and of the expected signal strength and mode structure. A number of transmitter sites were considered by sponsors and they specified that the initial studies were to be made assuming the radars were located at Grand Fork and Bakersfield. The initial calculations for these two sites were presented at a meeting with the sponsors on 2526 September 1991. A draft report was produced in October and the final report on the joint work. which included four specified sites and full details of the expected coverage from these sites was submitted to the sponsors by RSRE at the end of 1991.
- Active and Passive Radar Detection and Equipment