STUDIES IN IONOSPHERIC PROPAGATION
Abstract
A study was made of several problems arising from the transmission of HF radio waves through the ionosphere. The primary objectiv as to de ign and perform conventional pulse propagation experiments to tudy transmission characteristics. Specific areas covered were: a spectrum analysis of backscat er and one-way transmissions, wit special attention to th phase stability of he signals under normal and disturbed conditions; investigation of properties of signals circulating around the world; and an investigation of sporadic E backscatter, employing a radio interferometer and rotating a enna. A punc ed pap r tape ystem i t nded to record propagation data in form adaptable o proces ing by digital compu er was also ev loped. To isolate a wanted signal characteristic for closer study, some experiments made u e of processing techniques which are somewhat novel to HF experiments. Notable examples of this were the use of coherent detection for the ign l p se stu ies a d the operation of a radio interferometer during the sporadic E studies. Since coherent detection was basic to the spectrum analy is udies, the problem of instrumenting this technique was taken up in detail.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1961
- Accession Number
- AD0268270
Entities
People
- Harry Hoogasian
Organizations
- RTX