3 LBA Radio Telescopes in Australia x Katherinex ASKAPx Yarragadeex New NorciaLBA includes the ATNF telescopes plus those run by University of Tasmania at Hobart and Ceduna (SA), Tidbinbilla near Canberra (part of NASAs Deep Space Network). The ESA dish at New Norcia, north of Perth may also be included in the future. Also the AuScope geodetic antennas (12m) at Hobart, Yarragadee & Katherine.xCSIRO.
4 New Radio Telescopes - Auscope AuScope VLBI Project3 new antennasGeodetic/astrometric VLBI observations – IVSAdvanced construction
5 New Radio Telescopes – ASKAP & NZ First ASKAP antenna (from planned 36)12m antenna; Alt-Az mount3rd axis motion for polarisationVery fast: 4 degs/secondInterim VLBI system at 1400 MHzNZ Warkworth antenna12m antenna; Alt-Az mountSimilar to AuScopeVery fast: 4 degs/secondInterim VLBI system at 1400 MHz
6 Latest image for LBA + NZ + 1st ASKAP antenna Centaurus A
8 “Radio sensitive zones” in Australia Radio Act review 2002 – “radio sensitive zones”Notification and coordination - no protectionRegulatory RALI (2006) covers all Oz RA sites (MS31)Studies by ACMA (administration)
9 Notification Zone Parameters Limits derived from RA.769 (+ ~10-15 dB) & VLBIPropagation models from P.526 (Diffraction) and terrain models.
10 Management of Radio Notification Zones contact:Group for RFI and Spectrum issuesRALI MS31 – response within 1-weekIncludes all existing radio telescopes in Australia~ average 1 notification /monthWork Collaboratively with Tx proponentsWorks very well in practiceLatest exampleNetwork by Transgrid (power distribution company)Fixed links at ~6.5 GHzProposed 6660 MHz link at 35 km to ParkesCould affect Methanol observations at 6.7 GHzMoved channel allocation to not impact methanolInformal s & phone calls
12 Murchison Radio Observatory gazetted towns: 0population: “up to 160”
13 MRO (SKA) site protection Multi-layered protectionOwnership and control of central area (Boolardy)EMI controlsMineral resource management area – state govtRadio Quiet ZoneEmbargo 41 (since 2005)RALI MS32 (since 2007)(available from ACMA website)Preserve, maintain and enhance radio-quietenessPathfinders now (ASKAP, MWA,…)SKA in future
14 Embargo 41In force since 2005No new assignments in the range 100‑230 MHz within 150 km radius of the centre point of the RQZ.No new assignments in the range 230 MHz‑25.25 GHz within 100 km radius of the centre point.Applies to all apparatus licensed, coordinated terrestrial stations and earth stations within the specified zone. (Grand-fathering allowed…)Exceptions require a case-by-case consideration and approval of the Manager, Spectrum Planning and Engineering Section of the ACMA.
15 SKA RQZ in Australia Studies & definition by ACMA & CSIRO RALI MS32 - in force since 24/9/2007
18 Radiocommunications Act (1992) Governs all telecommunications in AustraliaRadio astronomy already recognisedSection 21 Astronomical and meteorological observationsThis Act applies to a radio emission in connection with making astronomical or meteorological observations in the same way as it applies to a radiocommunication.Wide scope for making regulationsSection 314 Regulations……(2) ….. the regulations may make provision in relation to:(a) prohibiting or regulating any act or thing likely to cause interference, or risk of interference, to radiocommunications; or(b) prohibiting or regulating making of radio emissions from a place within a specified area; or …..
19 Next steps Maintain and strengthen RQZ EMIRadiocommunicationsUse Radcommunications Act (1992) to:Enact new regulations as neededStrengthen/streamline current provisionsNew legislative instruments ?Political supportACMA critical to successWork with the regulator not against it!!