USA As Represented by Secretary of the Navy

Joseph Helmboldt

Marcello Romano

Sergio R Restaino

A radio telescope array is provided for tracking radio sources that are essentially infinitely stable and resilient transmitters. The radio telescope array may be implemented with just a few antennas in different applications, such as an ionospheric density gradiometer or an imaging scintillometer. Data received at the radio telescope array may be utilized for various purposes, for example, to analyze ionospheric variations, study bursts of radio emission or monitor cosmic objects.

Radio telescope array for passive ionospheric remote sensing

Systems, methods, and apparatuses for determining the distance between two positions are disclosed. The system includes a correlator, a first receiver, and a second receiver. The first and second receivers each include: an antenna, a steering mechanism, and a processor. The steering mechanism steers the antenna in an azimuthal direction and an elevation direction. The processor is configured to (i) control the steering mechanism, (ii) receive data recorded by the antenna from a plurality of sources, (iii) time-stamp the data recorded by the antenna, and (iv) control the transmission of the time-stamped data to the correlator. The correlator is configured to receive the time-stamped recorded data from the first receiver and the second receiver, and calculate a distance between the first receiver and the second receiver based thereon.

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Crofton, MD, United States of America

Joseph Helmboldt