The second GPS III spacecraft built by Lockheed Martin (GPS III SV02) – also known as Magellan – was recently encapsulated in its guards in preparation for its scheduled launch on Thursday. GPS III will be launched tomorrow from the Space Launch Complex-37 (SLC-37) at Cape Canaveral Air Force Station, Florida.
The Global Positioning System (GPS) III government, contractor and mission team hosted a media conference on August 19 and 19, announcing that on Thursday, August 22, everything is on track for the launch of the Global Positioning System (GPS) III second GPS III satellite was. The 27-minute start window opened at 9:00 am EST. The team, led by SMC's Production Corps and Launch Enterprise, also announced that the GPS III program is "in good shape and capable of meeting the needs of a healthy constellation for global deployment."
Magellan's GPS III SV02 in The Honor of the Portuguese Explorer, who led the first expedition to orbit the Earth, was originally scheduled to launch last month, but was pushed back. The United Launch Alliance (ULA) stated in a published report that the delay was due to "anomaly during component testing at a supplier that caused a crossover problem" component on the launch vehicle.
Now that everything is fine, a launch webcast is expected to start at 8:40 am EDT (1
The satellite GPS III SV02 is launched missile with a ULA Delta IV (4.2). This is the 15th and final launch of this specific configuration (4,2) as well as the final launch of the Delta IV Medium launch vehicle family. There are five remaining launches of the Delta IV Heavy configuration. GPS III SV02 will replace SVN-45 after it will be functional again sometime next year.
In May 2008, Lockheed Martin became the first GPS III incremental order for the development and production of two first spacecraft (SVs) with options for up to 10 additional SVs. GPS is a National Security Space (NSS) mission critical to national defense. In April 2016, SpaceX received its first NSS launch mission, GPS III-2. SpaceX currently has four more GPS III SVs in the contract, all of which are launched on a Falcon 9. SpaceX launched SV01 in December 2018, SV02 was due to launch on Delta IV of the United Launch Alliance in July, SV03 is due to launch in July. SV04 is expected to be launched in 2020 by the end of 2019, and SVs 05-06 are expected to be launched in the near future come.
GPS III-SVs will introduce new features to meet the demanding needs of both military and civilian users. It has the full ability to use M code to support warfighter operations. GPS III's nominal M-code capability exceeds the maximum M-code capability of GPS IIF and GPS IIR (Flex performance without P (Y) code). It is expanding international collaboration in the global navigation satellite system (GNSS) by sending the L1C signal interoperable with Galileo, the Quazi Zenith Satellite System (QZSS) and other GNSS systems. GPS III is required to complete the provision of the L2C and L5 signaling capabilities that began with the updated GPS IIR-M and GPS IIF satellites. Using an incremental approach, new features that require technical maturity or a higher risk of proper integration are postponed to later stages to ensure low-risk, high-confidence deployment.
- Improved filtering
- Improved accuracy
- Improved integrity
- First satellite to transmit a Galileo-compatible common L1C signal
- Several civil / military signals : L1 C / A, L1P (Y), L1M, L1C, L2C, L2P (Y), L2M, L5
- + 10 dB increase in ground cover power on the M code without reducing the performance of other military signals  Three rubidium watches
Other details provided by the team:
- Delta IV was manufactured at the United Launch Alliance plant in Decatur, Alabama.
- In terms of cost, the number has decreased over time as "we improve and learn. The first GPS III satellite costs more than half a billion dollars, while the last two cost less than 200 million dollars.
- The satellite is placed in orbital slot D3 to optimize coverage for GPS users.
- New features will allow this sends a total of four civil signals to improve interoperability, reception and safety of life.
- GPS satellites move at a speed of approximately 14,000 km / h in relation to the earth. GPS satellites fly in mid-earth orbit (MEO) at an altitude of approximately 20,200 km (12,550 miles). Each satellite orbits the earth twice a day.