Real‐time data acquisition and interpretation capabilities of the Dynasonde: 1. Data acquisition and real‐time display

Abstract

Dynasonde software for data acquisition in three modes is described. The ‘ I ’ mode corresponds to an ionogram format but includes complete echo polarization and angle‐of‐arrival information. K mode provides time series and high time resolution at freely selected sounding frequencies. B mode combines features of the other two modes. All share a real‐time noise rejection method which is described statistically. The system includes a digitally driven CRT (cathode ray tube) display and a variety of display formats for real time or deferred examination of data; in particular, dynamic time‐lapse displays of ionospheric activity can be maintained by the Dynasonde.