Single Antenna Power Measurements Based Direction Finding

Direction Finding Algorithm with Virtual Antenna Array

Background: Direction finding (DF) based on MUSIC algorithm has been studied and implemented in the wireless communications lab. Simulation results, measurement setup are shown in the figures below. Most of the direction finding (DF) algorithms require multiple antennas with at least í µí¼†/2 spacing. Also, performance of the DF algorithms mainly relies on  Number of antennas in the antenna ar...

A Virtual Rsns Direction Finding Antenna System

High-resolution Direction Finding Using a Switched Parasitic Antenna

Direction finding by exploiting the directional radiation patterns of an Switched Parasitic Antenna (SPA) is considered. By employing passive elements (parasites), which can be shorted to ground using pin diodes, directional radiation patterns can be obtained. The direction finding performance of the SPA is examined by calculating a lower bound on the direction finding accuracy, the Cramér-Rao ...

Performance Evaluation of Root Based Direction Finding Algorithms Using Hardware Emulation of the Antenna Array

To validate the theoretically predicted performance of root based direction finding (DF) algorithms an experimental test bed was assembled covering the 18501910 MHz band. A fourelement antenna array with uniform interelement spacing was emulated using variable phase shifters creating what is essentially a decoupled array environment. The array outputs were down converted using standard analogue...

A new root-based direction-finding algorithm

[1] Polynomial rooting direction-finding (DF) algorithms are a computationally efficient alternative to search-based DF algorithms and are particularly suitable for uniform linear arrays of physically identical elements provided that mutual interaction among the array elements can be either neglected or compensated for. A popular algorithm in such situations is Root Multiple Signal Classificati...