| 摘要 |
FIELD: radio engineering. SUBSTANCE: invention may find use in screening of electromagnetic fields and, in particular, while measuring attenuation by screening of pulse fields such as electromagnetic radiation pulses of nuclear explosion. Proposed method includes reception of electromagnetic energy from random radio stations which number and frequency are chosen on basis of table of random numbers. Only frequencies belonging to spectrum of electromagnetic radiation are considered. Reception of electromagnetic energy is carried out by all three spatial components of field first outside then inside examined object which determines value of transfer function as random quantity. Random character of transfer function follows from casual choice of radio stations which signals are subject to measurement, from ransom mutual orientation of case of examined object and radio signal, from random angle of incoming signal for radio stations differently distant. Method involves processing of obtained statistic series on basis of normal distribution law. Parameters of equivalent regular screening grid with square cells are set by median. Parameters of grid obtained as result of measurements make it possible to calculate efficiency of screening for various situations with any mutual orientation of point of nuclear explosion and location of object. Fragment of wire grid with square cells with proper parameters may be used in some cases for experimental efficiency evaluation of screening from electromagnetic radiation pulse of nuclear explosion. EFFECT: simplification and decrease of cost of method of efficiency evaluation of screening with the aid of probability approach with use of measurement results. |
