Estimation Of Azimuth And Elevation Angles Of Ultrasonic Signal Arrival By Indirect Phase Determination

The paper presents the concept of the method of determining the direction of ultrasonic signal arrival, i.e. the azimuth and elevation angles. This method is an extension of the previous approach which was proposed to determine only the azimuth angle. The approach is based on indirect phase determination. This makes it possible to tolerate spacing of receivers greater than half the wavelength of the received signal. At the same time, it provides increased measurement accuracy and reduced hardware requirements. For the proposed method, the preliminary implementation was performed and tested in simulations. This made it possible to estimate the value of the tolerated measurement error.