RADAR SUBSYSTEMS OF AUTONOMOUS MOBILE ROBOTIC SYSTEMS FOR STUDYING TSUNAMI IN THE COASTAL ZONE

Abstract

The problems of using robotic systems for survey and registration of tsunami tracks in hard- to-reach places are discussed. The description of such a complex with good operational characteristics, developed at the Nizhny Novgorod State Technical University n.a. R.E. Alekseev is given. A solution is presented that allows to equip an autonomous mobile robotic complex with a sensor of the own production and increase its cross-country ability. A method for constructing an antenna array, which allows achieving optimal characteristics in terms of maximum detection range and angular resolution is proposed. This result is achieved due to the fact that the entire geometric aperture of the antenna is "filled" with elements (columns) with an array pitch of half the wavelength. In this case, the placement of the receiving sub- arrays at the edges of the substrate forms the largest aperture under the conditions of the problem been solved and allows the use of the classical method of beam-forming when working in the far zone. An example of constructing an antenna array providing the formation of beams with a width of 5° in the sector of the far-field angles is considered. Application of the proposed solution allows you to expand the detection area of objects.

Keywords

• coastal monitoring
• marine hazards
• autonomous mobile robot
• radar
• antenna array