G.Ya. Shaydurov, D.S. Kudinov

The general formulation of application problem of the energy optimal super wideband signals based on double orthogonality spheroidal functions form in condition of the time and frequency band limiting of signals is stated. The technological limitations of the using of super wideband signals caused by the lack of specialized components operating at switching speeds of 10 Gbps are described Article describes the features of using super wideband signals in practical applications: high-voltage cable and electrical networks data transmission; transmission of digital information for the short-wave and tropospheric channels with the maximum possible speed; in digital Millimeter-wave cellular networks; in problems of the subsurface radar and deep electromagnetic probing of the Earth. The problem of subsurface radar is considered in more detail for non-traditional directions of its applying in particular for the sensing of conducting media at the maximum range. The possibility of realization of the electromagnetic radar operating in sea water at a depth exceeding the skin layer depth in the form of combined transmitting and receiving antennas, as well as the ability to create instruments for geophysical applications are described. The problem of determining the optimal shape of the probe signal for the problems of electromagnetic subsurface location is also presented. Presented the theoretical justification and experimental results of the optimum probe signal form for maximizing the signal / synchronous noise ratio.