Using the STARE double pulse system to obtain the mean velocity and velocity of long-lived irregularities

Details Using the STARE double pulse system to obtain the mean velocity and velocity of long-lived irregularities Using the STARE double pulse system to obtain the mean velocity and velocity of long-lived irregularities

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jatp...52..723w&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 52, Sept. 1990, p. 723-733.

Physics

3

Auroral Zones, E Region, Propagation Modes, Radar Measurement, Velocity Measurement, Autocorrelation, Pulse Repetition Rate

Scientific paper

The SABRE and STARE auroral radars utilize double pulses to measure one value of the autocorrelation function (ACF) to obtain the Doppler velocity of the irregularities in the E-region auroral zone. With these radars, model calculations show that, using the normal double pulse spacing of 300 microsec, the mean light-of-sight velocity is measured quite accurately. Utilizing three other pulse spacings to find the phase of the ACF at 2100 microsecs spacing, the velocity of the long-lived components of the irregularities can be estimated. Analysis of actual data shows that extrapolation to these delays avoiding 2pi ambiguities would usually be successful, and that the mean and long-lived velocities obtained differ in a manner which may be of significant geophysical and plasma-physics interest.

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