水声学原理

Problem 6 

1. Conventional beamforming processing (CBF).

2.  Minimum variance distortionless response (MVDR)

3. Experiment

4. More experiments

Problem 7 

A vertical array of ten receivers are spaced 10 meters apart at range 0 in the middle of water

column. In a simple Pekeris waveguide, (from problem 4: f=300 Hz, c=1500m/s, cb=1800m/s,

D=150m, attenuation 0.1dB/lambda).

Pick a source position in the water column and 1km< range <5km, for your data vector d

(dimension 10). Data vector d should be obtained by wavenumber integration. Your goal is to

localize a source using the conventional beamforming (CBF) and Minimum Variance

distortionless processor (MVDR), in range and depth.

a) First focus is on generating the replica vectors for a 100 by 120 grid of potential source

positions and save them in a mat file

b) Then read the mat file. Pick one of these grid points as a source position. Run CBF.

Plot ambiguity surface.

c) Run MVDR with diagonal loading (or noise)

Problem6+7.pdf