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The requirements for quasi‐optimal and optimal sequences for Super Dual Auroral Radar Network (SuperDARN) radar are stated for periodic multipulse sequences of the Golomb ruler class. The requirements are based on finding the sequences that provide the maximal first missing lag in autocorrelation function (ACF) of the received signal. The obtained quasi‐optimal signals up to 26‐pulse sequence are based on optimal and nearly optimal Golomb rulers. It is shown that standard 7‐pulse SuperDARN sequence is one of the quasi‐optimal sounding signals, but the 8‐pulse katscan SuperDARN signal is not. The characteristics are calculated for quasi‐optimal sounding sequences up to 26‐pulse one. It is shown that the most effective signals for the spectral measurements (regarding the maximal first missing lag in ACF and minimal sequence length) are 10, 12, 14, 18, 20, 24, and 26 pulse sequences that correspond to the optimal Golomb rulers. We present the results of the first spectral measurements at the Ekaterinburg (EKB) SuperDARN radar with the quasi‐optimal 8‐ and 9‐pulse sequences, as well as with the optimal 10‐ and 12‐pulse sequences. A comparison with the results obtained with the standard 7‐pulse SuperDARN sequence was made. The continuity of results in amplitude and velocity is shown; the expected improvement in spectral resolution is also demonstrated.

Optimal signals of Golomb ruler class for spectral measurements at EKB SuperDARN radar: Theory and experiment