Accession Number : ADA265223


Title :   Maintenance of the HIPAS Ionospheric Radio Frequency Heater at Two Rivers, Alaska


Descriptive Note : Final rept.,


Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF PHYSICS


Personal Author(s) : Wong, Alfred Y


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265223.pdf


Report Date : 24 Feb 1993


Pagination or Media Count : 17


Abstract : During this contract period, the work performed at the HIPAS site can be divided into two categories. The first category is basic site maintenance and the second category is experimental and scientific endeavors. The harsh weather at the HIPAS site combined with the remote location greatly increase the sight maintenance requirements. There are further complicated by interference from animals and providing the security necessary to preserve the facilities. On the experimental program the large backlog of data from the Gilmore Creek site has begun to be analyzed. This data indicates that we can detect ELF signals (11-100 Hz) 18 miles away. The ELF is generated by interaction of the HIPAS 2.8 MHz radio bean and the polar electroject. The signals were detected by a three axis 'Schumann Receivers' developed by Dave Sentman of UCLA's Institute of Geophysics and Planetary Physics. The received data has been stored on optical disks and tapes. Similar ELF data has been recorded at Table Mountain, California, as well as at a new station at Northwest Cape Australia, which was able to detect the HIPAS signal.


Descriptors :   *COMMUNICATION AND RADIO SYSTEMS , *AURORAE , *IONOSONDES , MAINTENANCE , HIGH POWER , ALASKA , RADIOFREQUENCY , TRANSMISSION LINES , ABSTRACTS , WINTER , ANTENNAS


Subject Categories : Atmospheric Physics
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE