radar
DESCRIPTION
software defined radar project introTRANSCRIPT
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
0
2 0
4 0
6 0
8 0
Time
Impu
lse
Com
pres
sion
0 0.5 1 1 . 5
x 10 -3
- 1
-0.5
0
0.5
1
Time
Cha
nnel