METHOD OF OBTAINING IONOGRAM Russian patent published in 2015 - IPC G01S13/95 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering, telecommunication, radar and can be used in systems for diagnosis of plasma phenomena in the Earth's ionosphere. The method of obtaining an ionogram includes, at each probing cycle, emitting a radio pulse in the form of a discrete-frequency signal (DFS) packet, which is a sequence of N pulses with a different frequency and the same duration from an array of fixed probing frequencies; receiving and measuring parameters of the reflected radio signal during propagation from the emitter to the receiver simultaneously and independently at each of the N frequencies of the DFS packet; readjusting the DFS frequencies to a new packet of DFS frequencies from the array of fixed probing frequencies, and emitting and receiving the reflected signal on the new DFS packet; successively selecting resetting the frequencies of the array of fixed probing frequencies with new DFS packets at each probing cycle until complete resetting of all frequencies in the array of probing frequencies over the time interval ΔT_DFS=ΔT/N, where ΔT is the standard time for obtaining an ionogram.

EFFECT: obtaining an ionogram over a time interval considerably shorter than 1 s.

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