A reconfigurable real-time interpolation beamformer
暂无分享,去创建一个
This paper describes an architecture for a compact real-time time-delay sonar beamformer. The design is based on a time-domain interpolation concept, and includes shading, interpolation, and time-delay functions for up to 64 sensor data inputs. A one card per beam configuration has been achieved. The digital interpolation technique used improves the effective sampling rate by a factor of 128. The beamformer design features 16-bit arithmetic precision, up to approximately a 5-kHz sampling rate for each of the 64 sensor input channels, and adaptability to any type of array, e.g., linear, circular, or arrays with nonequal interelement spacings. A 31-beam beamformer system, performing more than 620-million arithmetic operations a second, is discussed.
[1] R. Mucci. A comparison of efficient beamforming algorithms , 1984 .
[2] R. Pridham,et al. A novel approach to digital beamforming , 1978 .
[3] Thomas W. Parks,et al. New results in the design of digital interpolators" ieee trans , 1975 .
[4] R. Pridham,et al. Digital interpolation beamforming for low-pass and bandpass signals , 1979, Proceedings of the IEEE.