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Lurker last won the day on November 22

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About Lurker

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    Associate Professor
  • Birthday 02/13/1983

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    GIS and Remote Sensing

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  1. About the size of a small pickup truck, Sentinel-6 Michael Freilich will extend a nearly 30-year continuous dataset on sea level collected by an ongoing collaboration of U.S. and European satellites while enhancing weather forecasts and providing detailed information on large-scale ocean currents to support ship navigation near coastlines. The ocean-observing Sentinel-6 Michael Freilich satellite launched from Vandenberg Air Force Base in California aboard a SpaceX Falcon 9 rocket on Nov. 21, 2020 at 12:17 p.m. EST (9:17 a.m. PST, 5:17 p.m. UTC). Credit: NASA-JPL/Caltech "The Earth i
  2. In some ways, drilling into Antarctica’s ancient ice is easier than interpreting it. Today, more than 2 years after presenting the discovery of the world’s oldest ice core, scientists have published an analysis of the 2.7-million-year-old sample. One surprising finding: Air bubbles from 1.5 million years ago—from a time before the planet’s ice age cycles suddenly doubled in length—contain lower than expected levels of carbon dioxide (CO2), a possible clue to the shift in the ice age cycle. The CO2 levels are “amazingly low,” says Yige Zhang, a paleoclimatologist at Texas A&M Universit
  3. A new study shows that increased heat from Arctic rivers is melting sea ice in the Arctic Ocean and warming the atmosphere. The study published this week in Science Advances was led by the Japan Agency for Marine-Earth Science and Technology, with contributing authors in the United States, United Arab Emirates, Finland and Canada. According to the research, major Arctic rivers contribute significantly more heat to the Arctic Ocean than they did in 1980. River heat is responsible for up to 10% of the total sea ice loss that occurred from 1980 to 2015 over the shelf region of the
  4. The International Maritime Organization (IMO) has issued a resolution for maritime cyber-risk management, effective January 2021. IMO Resolution MSC.428(98) affirms that maritime operators need to address cyber threats that risk the integrity and availability of technology systems. GPS/GNSS signal jamming and spoofing expose the vulnerabilities of PNT-reliant systems. The single point of failure in the signals used to synchronize military operations or determine a vessel’s location leaves maritime systems open to attack. With resilient PNT, maritime and naval vessels can rely on trusted d
  5. China successfully launched the world's first 6G communication satellite by a Long March-6 carrier rocket that blasted off from the Taiyuan Satellite Launch Center, China Central Television (CCTV) reported. The 6G experimental satellite, named after the University of Electronic Science and Technology of China (UESTC), was jointly developed by Chengdu Guoxing Aerospace Technology, UESTC, and Beijing MinoSpace Technology. It will be used to verify the performance of 6G technology in space as the 6G frequency band will expand from the 5G millimeter wave frequency to the terahertz frequency. The t
  6. One beta tester of SpaceX's new Starlink satellite internet service is a Reddit user named "wandering-coder". This week they shared their experience online, testing the equpiment in a national forest which gets no cell service from any carrier -- and using it to upload this report:Works beautifully. I did a realtime video call and some tests. My power supply is max 300w, and the drain for the whole system while active was around 116w... It didn't work well with a heavy tree canopy / trees directly in the line of sight, as expected. I would be connected only for about 5 seconds at a time. Make
  7. is it the same problem with your indonesian topic? basically you can manipulate all remote sensing data using remote sensing software like ENVI or ERDAS.
  8. data rasternya 3D yang sudah jadi tentunya sudah mempunyai data individual ketinggian tiap2 pikselnya. mengkoreksi data ketinggian yang sudah terbentuk hanya dengan beberapa titik hasil survey yang tidak mencakup semua nilai piksel tentunya akan susah. kecuali error/kesalahan yang terjadi itu semuanya homogen, koreksi yang sering dilakukan untuk data jenis ini paling terkait error nilai outlier Znya yang biasanya bisa menggunakan tool fill sink, di arcgis atau software gis yang sejenis lainnya. tapi nek memang sejak awal Znya salah nilainya, tentunya susah, bisa diceri
  9. NGS has developed a new beta tool for obtaining geodetic information about a passive mark in their database. This column will highlight some features (available as of Oct. 5, 2020) that may be of interest to GNSS users. It provides all of the information about a station in a more user-friendly format. The box titled “Passive Mark Lookup Tool” is an example of the webtool. The tool provides a lot of information so I have separated the output of the tool into several boxes titled “Passive Mark Lookup Tool — A through D.” I will highlight several attributes that I believe will be very useful
  10. Earth is known as the “Blue Planet” due to the vast bodies of water that cover its surface. With an over 70% of our planet’s surface covered by water, ocean depths offer basins with an abundance of features, such as underwater plateaus, valleys, mountains and trenches. The average depth of the oceans and seas surrounding the continents is around 3,500 meters and parts deeper than 200 meters are called "deep sea". This visualization reveals Earth’s rich bathymetry, by featuring the ETOPO1 1-Arc Minute Global Relief Model. ETOPO1 integrates land topography and ocean bathymetry and provides
  11. this response basically in every big software company, if you got error on windows for example, you will get pretty much same sh*t, ahahahaha I prefer search on 3rd party forum, like stakeoverflow or such....
  12. A recently unclassified CIA drone program provides us with perspective on UAS development. Also, U.S. high-altitude surveillance capabilities are being tested, another record has been achieved, and an award for the U.S. Air Force space plane. 1960s CIA Bird-Drone Back when the U.S. was flying U2 spy planes over the Soviet Union and Gary Powers was on Russian TV after being shot down, the CIA got to thinking of another approach for gathering airborne intelligence. Project Aquiline was an early drone project aimed at making overflight much less conspicuous — because the drone was b
  13. Current u-blox GNSS platforms — from u-blox M8 and beyond — support the recently completed BeiDou navigation satellite system modernizations, improving the availability of GNSS positioning services. The opening ceremony of the BeiDou-3 global navigation satellite system (GNSS) was held in Beijing on July 31, officially celebrating the expansion of coverage offered by the critical Chinese space infrastructure to a global user base. As a global supplier of GNSS positioning and wireless communication technologies, u-blox has been driving technological innovation and deeply involved in t
  14. until they fix the performance issue, i dont see any advantages on ArcGIS Pro.... I still can use ArcGIS desktop for the daily task, no need to use fancy latest product
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