THE STUDY OF THE EFFECT OF SURVEY NOISES ON THE IDENTIFICATION PRECISION OF ITD METHOD

The effect of survey noises on the identification precision of ITD method is analyzed. The theory base of decreasing the noise effects by meanse of the oversized mathematical model is mathematically proved. The proposals for deciding the numbers of the degrees of freedom and the columns of the response matrices is put forward. Another effective method, the earring wave method, is gived. The effectiveness of the two methods is illustrated by the identification examples.