Charge Coupled Devices for Holographic and Beamsteering Sonar Systems
Two different types of charge coupled devices with different applications to acoustic imaging and holography have been developed and are being tested. One device is known as the Charge Coupled Processor (CCP) whose function is to provide signal preconditioning for parallel arrays and output a series of DC signals which can be used to reconstruct the target field. The other device is the Cascade Charge Coupled Device (C3D), an analog lens device which performs beamsteering by changing the CCD clock frequencies to vary the effective delay line lengths of many parallel channels behind the detecting elements.
KeywordsDelay Line Clock Frequency Acoustic Imaging Target Field Charge Couple
Unable to display preview. Download preview PDF.
- 1.Swanson, R.M. and J.D. ‘Meindl’; “Ion-Implanted Complementary MOS Transistors in Low-Voltage Circuits”, IEEE Journal of Solid State Circuits, SC7,2, April 1972, pps. 146–153.Google Scholar
- 2.Schott, J.D., R.D. Melen and J.D. Meindl, “The Cascade Charge Coupled Device: A Single-Chip Lens for Ultrasonic imaging Systems”, 1976, IEEE Solid State Circuits Conference, Philadelphia, February 1976.Google Scholar
- 3.Melen, R.D., et.al., “CCD Dynamically Focussed Lenses for Ultrasonic Imaging Systems”, 1975 International Conference on the Application of Charge-Coupled Devices, San Diego, Octover 1975, pps. 165–171.Google Scholar