Comparison of single station methods for analysis of tweek atmospherics

Comparative analysis of two different methods for estimation of parameters of the lower ionosphere by tweek - atmospherics was performed. These are so-called the phase and the sonogram methods. The analysis is based on numerical simulations of tweek atmospherics waveforms. The dependency of estimations accuracy of distance to a tweek source and effective ionosphere height were tested against a stochastic noise level. The stochastic error decreases with increasing SNR. The maximum value of a systematic error for SNR - 5 dB is less than 4% for distance determination and it is less than 1% for the height determination.