COMMUNICATIONS ENGINEERING LAB (CEL), UNIV.-PROF. DR. RER. NAT. FRIEDRICH JONDRAL

CELCEL

GNU Radio Radar Toolbox

Stefan Wunsch | September 14, 2014

KIT – University of the State of Baden-Wuerttemberg and

National Laboratory of the Helmholtz Association

www.kit.edu

THE FREE & OPEN SOFTWARE RADIO ECOSYSTEM

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THE FREE & OPEN SOFTWARE RADIO ECOSYSTEMTHE FREE

& OPENSOFT

WARERADI

O ECOSYSTE

MRadarRADAR

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Basics

Main features

I Signal generators

I Simulator/UHDinterface

I Estimators

I Outputs

Signalgenerator

UHD

Simulator

USRP

Estimator

Output

RX signalTX signal

target information

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Signal generators

I Except CW radar, all waveforms allow velocity and range estimation

I CW, FSK and Dual CW tested on hardware

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Estimators and peak detection

I Estimators for all waveforms provided

I Usually spectrum peak detection blocks connected with estimators

OS-CFAR

I Variable threshold detection

I Multi peak detection

I Also implemented for 2Dspectra like OFDM matrices

Max peak detection

I Fix threshold detection

I Single peak detection

I Good performance with badSNR

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Simulator and Echotimer

Simulator

I Simulator replaces hardwareinterface for testing anddevelopment purposes

I Implemented target properties:Range, velocity, RCS andazimuth

Echotimer

I Combined USRP sink/sourcefor synchronized Tx/Rxtransmission

I Set burst on specific point intime

I Time synchronization overMIMO cable or GPSDO

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Outputs

Time plot

I Plots time variation oftarget property, e. g.range

Scatter plot

I Plots two targetproperties incombination(e. g. range andvelocity)

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Spectrogram plot

I Plots 2D spectra, e. g.OFDM matrices

Command line output

I Command line output ofinput messages

I Store data in file

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Additional blocks

Tracking

I Single target tracking withUnscented Kalman filter andGeneric Sequential ImportanceResampling particle filter

RCS estimation

I Target radar cross sectionestimation

Trigger

I Generic trigger for commandline statements

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Repositorywww.github.com/kit-cel/gr-radar

Development bloggrradar.wordpress.com

Contactstefan.wunsch@student.kit.edu

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