Ultrasonic Transducer AFE / Pulser-Receiver Electronics Development

Objective: The goal is to design and develop functional prototype AFE(Analog Front End)/pulser-receiver system that can directly interface with any raw underwater transducer (200KHz to 1MHz) and deliver full echo-profile data to a Raspberry Pi. Description: I am looking for an experienced analog electronics / ultrasonic / sonar engineer to design and develop (physical device) a custom electronics board (AFE) to interface with a raw underwater ultrasonic transducer. The board will interface directly with a raw piezoelectric ultrasonic transducer and provide the complete transmit and receive signal chain required for underwater sonar. The basic architecture is: Raw Ultrasonic Transducer ↔ TX/RX Front End ↔ ADC ↔ Raspberry Pi / Processor Required Electronics The AFE should include: 1. Transducer interface 2. Transmit / Pulser 3. Transmit/Receive switching 4. Receive Analog Front End 5. ADC / Data Acquisition 6. Digital interface 7. Trigger / timing Desired Output: For each transmitted ping, I want to obtain data similar to: Amplitude / signal strength vs. time or range (Full Echo Profile output).