Radiometric measurements for the purposes of the permanent space patrol of the solar EUV and soft x-ray radiation

The peculiarities of the space absolute radiometric measurements of the solar radiation flux from full disk in the range from 0.14 to 135 nm are discussed in details. The experience of similar radiometer functioning at the Soviet satellite 'Cosmos-381' in 1970/71 is used. This radiometer together with two grating spectrometers of grazing and oblique incidence will form the complex of apparatus for the permanent space patrol of the solar EUV and x-ray radiation.