FPGA Implementation of an Amplitude-Modulated Continuous-Wave Ultrasonic Ranger Using Restructured Phase-Locking Scheme.

P. Sumathi P. A. Janakiraman FPGA Implementation of an Amplitude-Modulated Continuous-Wave Ultrasonic Ranger Using Restructured Phase-Locking Scheme. 2010 2010 VLSI Design http://dx.doi.org/10.1155/2010/213043 db/journals/vlsi/vlsi2010.html#SumathiJ10