Accession Number : ADA323070

Title :   A Diagnostic System for Studying Energy Partitioning and Assessing the Response of the Ionosphere During HAARP Modification Experiments.

Descriptive Note : Final rept. 30 Sep 91-31 Dec 93,

Corporate Author : GEOSPACE RESEARCH INC EL SEGUNDO CA

Personal Author(s) : Djuth, Frank T. ; Elder, John H. ; Williams, Kenneth L.

PDF Url : ADA323070

Report Date : 15 MAY 1996

Pagination or Media Count : 55

Abstract : This research program focused on the construction of several key radio wave diagnostics in support of the HF Active Auroral Ionospheric Research Program (HAARP). Project activities led to the design, development, and fabrication of a variety of hardware units and to the development of several menu-driven software packages for data acquisition and analysis. The principal instrumentation includes an HF (28 MHz) radar system, a VHF (50 MHz) radar system, and a high-speed radar processor consisting of three separable processing units. The processor system supports the HF and VHF radars and is capable of acquiring very detailed data with large incoherent scatter radars. In addition, a tunable HF receiver system having high dynamic range was developed primarily for measurements of stimulated electromagnetic emissions (SEE). A separate processor unit was constructed for the SEE receiver. Finally, a large amount of support instrumentation was developed to accommodate complex field experiments. Overall, the HAARP diagnostics are powerful tools for studying diverse ionospheric modification phenomena. They are also flexible enough to support a host of other missions beyond the scope of HAARP. Many new research programs have been initiated by applying the HAARP diagnostics to studies of natural atmospheric processes.

Descriptors :   *RADAR REFLECTIONS, *IONOSPHERIC DISTURBANCES, HIGH FREQUENCY, FIELD TESTS, ENERGY TRANSFER, DATA ACQUISITION, COMPUTER APPLICATIONS, AURORAE, INCOHERENT SCATTERING, RADIO WAVES, VERY HIGH FREQUENCY, ATMOSPHERIC PHYSICS, HIGH DYNAMIC RANGE, IONOSPHERIC MODIFICATION.

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE