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An airborne mrn-waveband dual frequency radar system for oil-spill detection on the sea surface is presented. The implemented design of microwave components, magnetron transmitters, antenna systems, receivers, and real-time digital signal processing computer boards is described along with methods of analysis for backscattered radio emission.

The thickness of nickel layers were compared on steel samples. The measurand is the layer/coating thickness. In the case of area mass measurements the amount is given as layer thickness by using the reference value of the density of Ni (8.90 g/cm3 according to GOST 9.302-88). For nine reference materials that were used to compare the measurement standards of UNIIM and PTB, the En-factor is less than 1, which indicates that the measurement standards are equivalent in the range of coating thickness from 4 μm to 100 μm and surface density from 40 g/m2 to 900 g/m2. But the comparison of the UNIIM and PTB measurement standards should be continued in the range of coating thickness from 1 μm to 5 μm. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.The comparison was registered as the supplementary comparison EURAMET.L-S24. The final report has been peer-reviewed and approved for publication by the CCL WG-MRA, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).