Chris Rizos

Emeritus Professor, School of Civil & Environmental Engineering, UNSW, Sydney, Australia; President-elect of the International Union of Geodesy & Geophysics.

[Chris Rizos @c_rizos]

"Staiger Hands FIG Presidency Over to Dumashie"... congratulations Diane on her accession to the FIG (International Federation of Surveyors) Presidency from 1 Jan 2023... https://t.co/r3ZUNkGD17

[Chris Rizos @c_rizos]

"ESA Plans For Low-orbiting Navigation Satellites"... well here is another plan to try non-GNSS PNT from Space... same vulnerabilities as GNSS, no business plan, and less capable than GNSS... progress? https://t.co/XJfpWs7L8s

[Chris Rizos @c_rizos]

"ESA's GENESIS Mission"...GENESIS will work by combining and co-locating all four of the geodetic techniques on the same platform for the first time, aboard a satellite in a 6000km altitude orbit... to improve the ITRF for future Earth applications.

[Chris Rizos @c_rizos]

Prof. Dr. Helmut Moritz (1933-2022) passed away 21 October. He was a true Giant of Geodesy, who made some of the greatest theoretical contributions to the field via his seminal books. President of the IAG 1979-83, President IUGG 1991-95.

[Chris Rizos @c_rizos]

"Diane Dumashie Elected New President of FIG"... Congratulations Diane! The GeoUnions look forward to working with the FIG under your leadership to promote our geospatial skills and knowledge to address society's challenges, https://t.co/GITJY2jRqL

[Chris Rizos @c_rizos]

"National Academies Issues Report on Ligado Interference", for those interested in this byzantine affair... how GNSS community (& sympathisers) are still fighting a mobile comms giant that can damage GNSS, read report, https://t.co/vEipzMsgxG

[Chris Rizos @c_rizos]

An excellent article by Matt King on the recent Earth's increase of length-of-day (by millisecond or so) bucking the longer-term trend. BTW the LOD was much shorter (by several hrs) millions of years ago. https://t.co/SlE6vEuQI3

[Chris Rizos @c_rizos]

Sad news... "Australians are more likely to see space as a threat than a frontier full of positive possibilities, and just one in ten say they would like to work in the space industry", https://t.co/d7McvdQ7kT

[Chris Rizos @c_rizos]

"Midnight Comes a Fraction Sooner as Earth Spins Faster", interesting... 29 June this year, Earth racked up an unusual record: its shortest day since the 1960s, when we began measuring the planet’s rotation with atomic clocks. https://t.co/4L6vTtH5mZ

[Chris Rizos @c_rizos]

What an interesting article! "Cadastre in Wartime", about cadastral system/surveying in Ukraine... https://t.co/DNnFNLawc9

[Chris Rizos @c_rizos]

Oh dear, more chest-beating... this time from India... "India’s Satellite-based Navigation System ‘NavIC’ As Good As US' GPS"... really? Make NavIC more interoperable with other GNSS... the world will use all easily-tracked GNSS signals. https://t.co/gcd20hijE3

[Chris Rizos @c_rizos]

This is a good news story: "Drone Power For Preserving Indigenous Knowledge", read about 19yr old Gullara McInnes, who has combined her love of drones & mapping with her passion for her traditional country, https://t.co/qfvJiCWd7E

[Chris Rizos @c_rizos]

Congratulations! A great achievement! "UYSD Wins New Mexico Rocket-making Competition", https://t.co/9DVsC96yYn

[Chris Rizos @c_rizos]

What we needed, more competition over social media mapping/navigation, but is Instagram needed? "The New Instagram Map Is Like Google Maps But With More Selfies". Judge for yourself, https://t.co/4bJt8yPPYG

[Chris Rizos @c_rizos]

"Shining a Spotlight on Bushfire Monitoring", an article related to improving Australia's response to bushfire emergencies, including the use of EO data. https://t.co/0ZPjdyc06o

[Chris Rizos @c_rizos]

This is an interesting report, ‘What on Earth Is the Value of Space?’, prepared by Inmarsat, see article and link to report at https://t.co/tDVrzri4BR

[Chris Rizos @c_rizos]

A thoughtful article on GNSS constellations, including the likely impact of China's BeiDou, https://t.co/tTczuYmGhs. It really should be "all GNSS are welcome", not "mine is better than yours".

[Chris Rizos @c_rizos]

Now this is a Good News Story... "German Radar Satellite TerraSAR-X - 15 Years in Space and Still in Perfect Shape". Fantastic achievement... https://t.co/76H1Iq24yz

[Chris Rizos @c_rizos]

For those interested in geology... "China Releases New Geologic Map of Moon", interesting, sort of... https://t.co/tnqgSMgjjg

[Chris Rizos @c_rizos]

In case you're interested in what the (delusional) brits are up to re PNT in a post-BREXIT era... "UK’s SBAS Signal Repurposed for Sovereign UK PNT Capability", https://t.co/zaV8y6oYu8