Angle resolution single user scenario

Plots normalized beam pattern for a uniform linear array as a function of input SNRs, #-of-sensors, data record size

Uniform linear array processing, based on textbook 'Smart Antennas' by Frank B. Gross 2E.

This script runs & outputs different angle resolution estimators refereneced in above text. Input is number of array elements (assume uniform linear array), length of data record for recursive, SNR of single user input, & angle of target (in degrees). Assumes lambda/2 (Nyquist) sensor element seperation, so is frequency agnostic. This is the narrowband array processing assumption. Uses input user BPSK signal (using randn), adds noise based on SNR loop, creates array response vectors & autocorrellation matrixes in time-domain, & then plots normalized beam pattern (or look direction) of input target. It plots the normalized beam pattern, but uses a given input target direction, & so an error % can be attained if using 'findpeaks' option, or something similar.

v1.0.0; there is a current issue with SNR not using sigma^2 (variance); also the linear-predictor may not be correct or that the result is just that of predicting single target.