Accession Number:

ADA445929

Title:

Probing of the Artificial Hole in the Ionosphere with the HF Skywave Radar

Descriptive Note:

Conference paper

Corporate Author:

CHINA RESEARCH INST OF RADIOWAVE PROPAGATION XINXIANG (CHINA)

Report Date:

2005-04-14

Pagination or Media Count:

6.0

Abstract:

This paper describes an experiment in which high-frequency sky wave radar probed the artificial ionospheric hole that was caused by the flames of a rocket that was vertically launched and that penetrated the ionosphere. After the rocket had passed through the ionosphere the minimum time delay Psub min-f on the backscatter ionograms showed wave and focusing stripes resulting from the irregular structure. The results indicated a low electron density zone in the ionosphere along the rockets path. Using the asymmetry quasi-cosine ionospheric hole model, the experimental Psub min-f was simulated using two-dimensional ray tracing. The results showed that the size of the hole in the ionosphere along the radar beams was 573 km and the critical frequency of the center was 2.6 MHz lower than the background critical frequency 12MHz. The ionospheric environment 350km away from the launching site was disturbed, and the propagation velocity of the ionospheric disturbance was about 50ms.

Subject Categories:

  • Atmospheric Physics
  • Active and Passive Radar Detection and Equipment
  • Pyrotechnics
  • Rockets
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE