Abstract
This paper proposes a new configuration of acoustic sensors-the collocation of three cardioid sensors in perpendicular orientation, in order to increase the mainlobe-To-sidelobe height ratio (possibly to infty). This paper will analyze such a proposed triad's 'spatial matched filter' beam-pattern that is independent of the frequency/spectrum of the incident signals. Specifically, this paper will analytically derive the mainlobe's pointing error in azimuth-elevation, the mainlobe's two-dimensional beam 'width,' the necessary and sufficient conditions for a sidelobe to exist, the mainlobe-To-sidelobe height ratio, and the array gain. These above characteristics depend on the cardioids' 'cardiodicity parameter' and on the beam's nominal 'look direction.'
| Original language | English |
|---|---|
| Article number | 8106745 |
| Pages (from-to) | 895-906 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Signal Processing |
| Volume | 66 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 15 Feb 2018 |
Keywords
- Acoustic arrays
- acoustic beam focusing
- acoustic beam steering
- acoustic beams
- acoustic position measurement
- acoustic signal processing
- array signal processing
- beam steering
- beams
- dipole arrays
- directional sensors
- focusing
- sonar arrays
- spatial filters
- underwater acoustic arrays
- underwater acoustic transducers
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering