Abstract:
This paper describes an achieved result in designing of the four-receiver microwave hyperspectrometer based
on zero measurement method and the multi-receiver concept of realization. The block diagrams of the microwave
front-end with operating frequency band from 18 to 26.5 GHz, the radiometric receiver, and the frequency
transmission module are shown. The technical implementation of every described blocks of the microwave
hyperspectrometer are described. Presented technical implementation includes a list of modern components
are used to designing of laboratory model of hyperspectrometer. The detailed block diagram of the
microwave front-end is presented. Description of main technical characteristics of parts of the microwave
front-end is also presented. The analysis of a technical characteristics influence to measurement errors is
shown. The mathematical model of a measurement error calculation in hyperspectral modeis described. The
influence of the active reference noise generator temperature accuracy, the directional coupler insertion loss
and the passive reference noise generator temperature accuracy to a measurement errors are described. A numerical
experimental results of designed mathematical model are presented. The dependence of the minimum
value of measurement errors form the temperature of passive noise generator is presented.
