Real-Time UWB-OFDM Radar-Based Navigation in Unknown Terrain

Author

Kauffman, Kyle ; Raquet, John ; Morton, Y. ; Garmatyuk, Dmitriy

Author_Institution

Dept. of Electr. Eng., Air Force Inst. of Technol., Wright-Patterson AFB, OH, USA

Volume

49

Issue

3

fYear

2013

fDate

Jul-13

Firstpage

1453

Lastpage

1466

Abstract

We present a signal processing algorithm and simulation study for aerial navigation with an ultrawideband orthogonal frequency division multiplexed (UWB-OFDM) radar in Global Positioning System (GPS)-denied environments. Stationary scatterers are detected and tracked using an M/N detector and modified global nearest neighbor (GNN) tracker. The radar measurements to the scatterers are combined with inertial navigation system (INS) measurements in an extended Kalman filter (EKF) to compute the aircraft position. The estimation error of the proposed algorithm is analyzed through computer-based simulations with/without radar measurements from the scatterers and with varying signal-to-noise ratio (SNR).

Keywords

Global Positioning System; Kalman filters; OFDM modulation; inertial navigation; military radar; radionavigation; ultra wideband radar; Global Positioning System; UWB-OFDM radar-based navigation; aerial navigation; extended Kalman filter; global nearest neighbor tracker; inertial navigation system; signal processing algorithm; ultrawideband orthogonal frequency division multiplexed radar; unknown terrain; Navigation; OFDM; Radar tracking; Sensors; Signal to noise ratio;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2013.6557998

Filename

6557998