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software defined radar project intro

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Page 1: Radar

www.www.sagaxsagax..huhuSagaxSagax,, Ltd Ltd..

HallerHaller u. 11-13. u. 11-13.1096 Budapest, HUNGARY1096 Budapest, HUNGARY

VHF Pulse Compression Radar VHF Pulse Compression RadarGoals of the project:Development of an experimental radar transceiver with asociated signal and dataprocessing for detecting unexpected occured, low-height operated, small reflectable,flying targets, -using the existing antenna mechanics of type P-18 VHF radar.

Technical objectives:Design and implementation of a state of the art equipment with sub-pulse modulatedtransmitter, matched filter pulse compression receiver, full semiconductor based,computer controlled, remote operable, ready for system integration.

Installed type P-18 “Spoon Rest” VHF radar

Implementation: using advanced software radio technology

Analog RF signal processing High-speed domain conversion Digital signal processing algorithms

T/R switchLNA

Low-level signalconnections

IF and triggerconnections

PAPA’s power supply

Isolation transformer Platformcomputer

Booster

P-18antennashelter

P-18shelter

TransceiversubsystemSignal and data proc.

Displaysubsystem

Rotationcontrol

Rotation signalAntenna connection

RS-232

RHP/ASOCRotationinterface

N U D Direction

RS-232IP

Operating environment of the device:

Signal- and data processing software: PP indicator software:

Construction: 12U height 19” rack

Az eddig megvalósított Az eddig megvalósított legteljesebblegteljesebb

radarradar fejlesztési projekt fejlesztési projekt

Special thanks to:

Pulse compression:64us pulse with 1us symbolrate subpulse modulation istransmitted, in the receiver it iscompressed back to 1us toprovide the requiredresolution. 0 0 . 5 1 1.5

x 1 0- 3

- 20

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2 0

4 0

6 0

8 0

Time

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Com

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0 0.5 1 1 . 5

x 10 -3

- 1

-0.5

0

0.5

1

Time

Cha

nnel