🔊 Phased-Array Sonar

Steering angle: 0°

Focal depth: 8.0 cm

Active elements: 32

Frequency: 5.0 MHz

Pulse repetition: 2.0 Hz

Medium (speed of sound):

Auto sector sweep (builds B-scan)

Speed of sound1540 m/s

Wavelength λ—

Aperture D—

Angular resolution—

Lateral res. @focus—

Axial resolution—

Measured range (beam)—

Round-trip time—

Pulse-echo & beamforming
Depth = c·t/2 from echo delay. Each element fires with delay τᵢ = (r_max − rᵢ)/c so wavefronts add in phase at the steered, focused point — true delay-and-sum beamforming.

Phased array, medium & targets — delay-and-sum wavefield (3D, drag to orbit)

Live B-scan — angle (x) vs. depth (y), brightness = echo strength