Algorithms to estimate the Direction-of-Arrival of the target signal

This repostory is focusing on sparse array (a small number of receivers) doa estimation. Some of the algorithms are designed for one-dimension direction estimation. However, 1-d search can be easily extended into 2-d search by using another non parallel pair of sensor. Thus, the target direction vector in a 3-d can be obtained because the third angle info is dependent on the first two.

The algorithms will be introduced and explained with codes as following:

1 Search-Based AOA Estimation

Eusipco 2017: “Angle-of-arrival-based gesture recognition using ultrasonic multi-frequency signals”

2 Accelerated Algorithm using Random Ferns

GlobalSIP 2018: “Fast Phase-difference-based DOA Estimation Using Ranfom Ferns”

3 PDP algorithm (Phase-difference projection)

Eusipco 2019: "Realtime 2-D DOA Estimation using Phase-Difference Projection (PDP)"

4 PDP for Non-Uniform Linear Arrays

Submitted to <IEEE Wireless Communications Letters>