Signal processing device, ultrasonic system, and vehicle

Abstract

A signal processing device includes a wave-transmission signal generator configured to generate a wave-transmission signal for wave transmission of an ultrasonic wave, a wave-reception signal output unit configured to output a wave-reception signal based on wave reception of an ultrasonic wave, and an own-wave recognition unit configured to recognize an own wave which is a reflected wave of the wave transmission that may be included in the wave reception. The wave-transmission signal generator is configured to generate the wave-transmission signal with a modulation pattern based on a true random number or a pseudo random number. The number of sections of the wave-transmission signal for each of which a frequency modulation pattern is individually settable in a time series is smaller than the number of bits of the true random number or the pseudo random number.

Dependencies are inferred from the claim text.