1. www.www.sagaxsagax..huhu
SagaxSagax,, LtdLtd..
HallerHaller u. 11-13.u. 11-13.
1096 Budapest, HUNGARY1096 Budapest, HUNGARY
VHF Pulse Compression RadarVHF Pulse Compression Radar
Goals of the project:
Development of an experimental radar transceiver with asociated signal and data
processing 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 modulated
transmitter, 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 signal
connections
IF and trigger
connections
PAPA’s power supply
Isolation transformer Platform
computer
Booster
P-18
antenna
shelter
P-18
shelter
Transceiver
subsystem
Signal and
data proc.
Display
subsystem
Rotation
control
Rotation signal
Antenna connection
RS-232
RHP/ASOCRotation
interface
N U D
Direction
RS-232
IP
Operating environment of the device:
Signal- and data processing software: PP indicator software:
Construction: 12U height 19” rack
Az eddig megvalósítottAz eddig megvalósított
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radarradar fejlesztési projektfejlesztési projekt
Special thanks to:
Pulse compression:
64us pulse with 1us symbol
rate subpulse modulation is
transmitted, in the receiver it is
compressed back to 1us to
provide the required
resolution. 0 0 . 5 1 1.5
x 1 0- 3
- 2 0
0
2 0
4 0
6 0
8 0
Time
ImpulseCompression
0 0.5 1 1 . 5
x 10 -3
- 1
-0.5
0
0.5
1
Time
Channel