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Non-crosstalk ultrasonic ranging systems excited using sinusoidal signals are addressed. On the basis of the hardware platform built previously, binary pseudorandom sinusoidal excitation (BPSE) sequences are proposed for a single ultrasonic ranging system in which multi-channel transducers are included. Three different binary pseudorandom sequences, i.e., binary chaotic sequence, m sequence and Gold...
Traditionally, most ultrasonic ranging systems are excited using pulse signals. A hardware platform of ultrasonic ranging system that is excited using a sine signal is presented. On the basis of the new hardware platform, the chaotic sine frequency modulation (CSFM) sequence is proposed to excite ultrasonic transducers. Correlation characteristics of the echo signals generated using the CSFM excitation...
High echo energy is important in sonar systems to increase measurement range. A sufficient condition is derived and obtained to achieve high echo energy for pulse position modulation excitation sequences. This paper addresses echo energy analysis under the premise that crosstalk between different sonar transducers can be avoided. Experiments validate the derived sufficient condition.
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