Scan trace: signal (ppm of the transmit signal, log scale) along the lane, threshold and soil residual
Signal against depth for the selected target on the coil axis: the 1/d6 law, with the detection depth
Target response plane (R resistive, X reactive; normalised by 2 pi R3) swept from 3 Hz to 100 kHz (dots = the operating frequency): steel (ferrous) rises, copper and aluminium swing to a negative reactive value
Scope: transmit current and the signal received from the selected target (phase lag encodes the material)
B-scan (radargram): amplitude, warm = positive, cool = negative. Time on the left, depth on the right at the assumed velocity
A-scan at the cart position (amplitude against two-way time) with the echo arrival times
Two-way loss against depth in the current soil (dB) and the dry sand and wet clay references: where the echo drops below the noise floor