| 摘要 |
FIELD: the invention refers to radar meteorology and may be used for detection of atmospheric fields with high level of turbulence. ^ SUBSTANCE: according to the mode it is necessary to radiate periodically radio impulses of a incoherent meteorological radar in the researched field, to receive signals reflected from meteorological particles present in the researched field, to define the amplitude of the received summary signal, to calculate the correlation function of the amplitude in time points between whom intervals are multiple to the period of repetition of radio impulses, to measure an average quadratic deviation of the speed of wind on the basis of the relation where sigmaw - an average quadratic deviation of the speed of wind; lambda- a working length of the incoherent meteorological radar; -the value of a zero moment of spectral density of power; - the value of the second moment of spectral density of power; k=(K(Tr ), K(2Tr), K(NTr)) - the vector of the readings of the correlation function of the amplitude of received signal in the time points between whom intervals are multiple to the period of repetition of radio impulses; K(nTr) -the value of the correlation function in a time point nTr; Tr - a period of repetition of radiated radio impulses; N - a number of time points of the reading of the correlation function; T - an operator of transposing; H -an operator of hermitian conjugation; gp, p=0,1,2 -the vector equal to the (p+1)column of the matrix G=A(AHA)-1, where A - a matrix of the size NxN; -an element of the matrix A standing at the intersection of m-line and n-column, m,n=1,2, ,N. They compare the average quadrature deviation of the speed of wind with the installed threshold level sigmawnop and at sigmaw>=sigmawnop make deduction about availability of presence of increased turbulence in the researched field of atmosphere. ^ EFFECT: increases reliability of detection with the aid of an incoherent meteorological radar of atmospheric fields with high level of turbulence. ^ 4 dwg |
