Performance of 142-and 204-GHz radio spectrometers is optimized for remote sensing of ozone and chlorine monoxide in the Earth's atmosphere by means of computer simulation. Versions of spectrometers with one broadband acousto-optical and two filtering spectrum analyzers optimized in frequency resolution are considered. A brief description of the spectrometers and their basic units is given.
V. I. Perfil'ev, and V. I. Suslyaev UDC 621.374.4 Problems connected with optimization of frequency doubling regimes at high levels of pumping power are discussed. Both design and engineering methods of improving the energy characteristics of the devices are considered. Results of calculations are compared with field experiments carried out in the frequency range 200-220 GHz.
ev UDC 537.86The mathematical model of a nonautonomous dynamic system with nonlinear capacity and four-dimensional phase space is numerically investigated. The behavior of the maximum characteristic Lyapunov parameter and attractor capacity, information, and correlation dimensions attendant to variations of the external force frequency is investigated. The existence of the strange nonchaotic attractor that retains the roughness property for a wide range of variations of the system parameters is established in the phase space. Results of field experiments that confirm the correctness of numerical calculations are presented.
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