1. www.sagax.hu
KorszerKorszerőő frekvencia hasznfrekvencia hasznáálat ellenlat ellenıırzrzéésisi
eszkeszköözzöökk éés ms móódszerekdszerek
Dr.Dr. Eged BertalanEged Bertalan
SagaxSagax CommunicationsCommunications LtdLtd., 1096 Budapest., 1096 Budapest HallerHaller u. 11u. 11--13. Hungary13. Hungary
Analog- and digital hw Signal processing- and operating sw Equipment System
4. 4/27www.sagax.hu
Purpose of spectrum monitoring (civilian)Purpose of spectrum monitoring (civilian)
• assist in the resolution of electromagnetic spectrum interference, whether on
a local, regional or global scale, so that radio services and stations may coexist compatibly, reducing and
minimizing resources associated with installing and operating these telecommunication services while
providing economic benefit to a country’s infrastructure through access to interference- free, accessible
telecommunication services;
• assist in ensuring an acceptable quality of radio and television reception
by the general public;
• provide valuable monitoring data to an administration’s electromagnetic
spectrum management process concerning the actual use of frequencies and bands (e.g.,
channel occupancy and band congestion), verification of proper technical and operational characteristics
of transmitted signals, detection and identification of illegal transmitters, and the generation and
verification of frequency records; and
• provide valuable monitoring information for programmes organized by the
ITU Radiocommunication Bureau (Bureau), for example in preparing reports to
Radiocommunication Conferences, in seeking special assistance of administrations in eliminating harmful
interference, in clearing out-of-band operations, or in assisting administrations in finding suitable
frequencies.
5. 5/27www.sagax.hu
RRáádidióóelektronikai eszkelektronikai eszkööz modellz modell
Analog
processing
Digital
processing
Domain
conversion
A/D and D/A
Software Defined Radio based implementation
Conversion
technology
RF
technology
DSP
technology
IF Down
Conversion
Baseband
Down
Conversion
Baseband
Demodulation
and
Processing
RF IF BB
Traditional implementation
GUI
technology
10. 10/27www.sagax.hu
Monitoring vevMonitoring vevııkkéészszüülléékk
••IntegratedIntegrated fronfrontt--endend
tunertuner
••2020--3000MHz VUHF3000MHz VUHF
••1.51.5--32MHz HF32MHz HF
••4400KHz IF bandwidth00KHz IF bandwidth
••AM/FM/SSB/ISBAM/FM/SSB/ISB
demodulationdemodulation
••Hard disk recordingHard disk recording
facilityfacility
SRMSRM--3000 receiver3000 receiver
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DemodulDemoduláátortor éés deks dekóóderder
•Different signal input
interfaces
•Digital demodulators
•Large number of
signal decoding
Advanced signal
analysis functions
•Powerful signal
intelligence tools
•Signal classification
option
SSDWDW--30003000 decoderdecoder
12. 12/27www.sagax.hu
TTáárolrolóó/k/kéésleltetsleltetıı szerverszerver
••Compact design withCompact design with
graphical usergraphical user
interfaceinterface
••Up to 40MHz wideUp to 40MHz wide
instantaneousinstantaneous
realreal--time bandwidthtime bandwidth
••Analog or digitalAnalog or digital
input and outputinput and output
••Up to 8TB storageUp to 8TB storage
capacity in 4Ucapacity in 4U
••StandStand--alone oralone or
network accessnetwork access
SSSSSS--30003000 serverserver
15. 15/27www.sagax.hu
ÁÁllomllomáás protots prototíípusok (12U 19pusok (12U 19”” mmééretben)retben)
Felderítı (ESM) állomás Zavaró (ECM) állomás
0.090.09--3000MHz3000MHz frekvenciafrekvencia tartomtartomáányny
2/4 f2/4 füüggetlen keresggetlen keresıı vevvevııkkéészszüülléékk
4/16/64 monitoring csatorna4/16/64 monitoring csatorna
Helyi vagy tHelyi vagy táávoli rvoli röögzgzííttéési lehetsi lehetıısséégg
IrIráánymnyméérréési ksi kéépesspesséégekkel bgekkel bııvvííthetthetıı
Helyi vagy tHelyi vagy táávoli vezvoli vezéérlrléés lehets lehetıısséégege
AdAdóó 110000--500MHz500MHz frekvenciafrekvencia tartomtartomáányny
FolyamatosFolyamatos éés felels felelıı (responsive)(responsive) üüzemmzemmóódd
1100ms00ms vváálaszidejlaszidejőő akciakcióókkéépesspesséég (1ms opcig (1ms opcióó))
SzSzééles adaptles adaptáálhatlhatóó modulmoduláállóó jelkjelkíínnáálatlat
11000W ad000W adóó kimenkimenıı teljesteljesíítmtméényny
AkkumulAkkumuláátorostoros üüzem cszem csöökkentett kkkentett kéépesspesséégekkelgekkel
16. 16/27www.sagax.hu
ESMESM sstationtation’’s functionalitiess functionalities
•• InterceptingIntercepting
–– Detect new eneDetect new enerrgy in the spectrumgy in the spectrum
–– Catalog the signal with different toolsCatalog the signal with different tools
–– Automatically document the resultsAutomatically document the results
•• MonitoringMonitoring
–– DetectDetect interestedinterested signals in the spectrumsignals in the spectrum
–– Automatically record signals meet defined parametersAutomatically record signals meet defined parameters
–– Post process signals and search for signal of interest (SOI)Post process signals and search for signal of interest (SOI)
17. 17/27www.sagax.hu
Functional processing stepsFunctional processing steps
•• Spectrum estimationSpectrum estimation
–– Developed the signal environmentDeveloped the signal environment
•• TThhreshold detectionreshold detection
–– Three type of tThree type of thhresholdreshold
–– The spectrum is compared to the thresholdThe spectrum is compared to the threshold
•• Signal searchSignal search
–– New signal list is generated on every sweepNew signal list is generated on every sweep
–– Signal history is developedSignal history is developed
•• Trigger generationTrigger generation
•• Performing reactionsPerforming reactions
18. 18/27www.sagax.hu
Directogram
Functional processing stepsFunctional processing steps
Wide-band
high-resolution
high-speed
energy
and
direction
spectrum
estimation
Reactions
Alarm
Current
signal
list
Signal
history
list
Database
Threshold
Trigger Message
Monitor
…
Direction
Spectogram
Spectrum
Display
27. 27/27www.sagax.hu
ÖÖsszefoglalsszefoglalóó
•• Spektrum monitoring helye, feladataiSpektrum monitoring helye, feladatai
•• Szoftver rSzoftver ráádidióó technoltechnolóógia alapelvegia alapelve éés haszns hasznáálatlatáának elnak elıınyeinyei
•• Spektrum monitoring berendezSpektrum monitoring berendezééseksek
•• IntegrIntegrááltlt áállomllomáás funkcis funkcióókk éés kis kiééppííttééseksek
1842 Ipari ki1842 Ipari kiáállllííttááss
1844 V1844 Véédegylet a hazai ipar vdegylet a hazai ipar véédelmdelméébenben
„ö„önnáállllóó áállamhoz nemzeti ipar kellllamhoz nemzeti ipar kell””