No abstract

Some results of processing data obtained with the help of multi-base interferometric sonar during its full-scale tests are presented. The possibility of reconstructing depths with the help of a multi-base interferometric sonar sonar with an accuracy not worse than 2% of the depth at the subterranean point is shown, which meets the requirements of the 5th edition of the International Hydrographic Organization Standard S-44.

No abstract

No abstract

Abstract. Task of active location is detection of located object-target, determining the distance to it, the angular coordinates of the target, its direction and its speed. The problem is solved by using signals, which sounding, exploring the target of a non-contact method (remotely) -its irradiating, receiving reflected from the target (scattered from the target) signal and its processing. In active location of high spatial resolution are used short tonal signals (rectangular pulses with sinusoidal filling) and long-term wideband chaotic signals (limited on band of frequencies and duration of implementation). Short pulses are used when the distance to the target is not more than tens of meters. By increasing the distance to the target is required to increase the capacity to hundreds of megawatts per pulse. This is possible by using special devices, but burdened with a large set of problems. Processing outgoing and reflected short pulse produced oscillographic. Long-wideband chaotic signals formed by noise generators, using excitation in system of multiple modes of vibration and nonlinearity generator elements. Radiation, reception and processing of these signals provide the active location of high spatial resolution. Processing of chaotic signals is to construct a function of cross-correlation between the sent and received signal by a method of double spectral processing. In paper is compared the use of wideband chaotic signals in the radioand hydrolocation.