SUBJECT: Space Policy Directive 7, The United States Space-Based Positioning, Navigation, and Timing Policy
This Space Policy Directive establishes implementation actions and guidance for United States space-based positioning, navigation, and timing (PNT) programs and activities for United States national and homeland security, civil, commercial, and scientific purposes. This policy complements the guidance set forth in Executive Order 13905 of February 12, 2020 (Strengthening National Resilience through Responsible Use of Positioning, Navigation, and Timing Services), and the intersector guidance for Global Navigation Satellite Systems (GNSS) included in the December 9, 2020, National Space Policy. This policy supersedes National Security Presidential Directive-39 (NSPD-39) of December 15, 2004 (United States Space-Based Positioning, Navigation, and Timing Policy).
By Danny Baird NASA’s Space Communications and Navigation program office
The Artemis generation of lunar explorers will establish a sustained human presence on the Moon, prospecting for resources, making revolutionary discoveries, and proving technologies key to future deep space exploration.
To support these ambitions, NASA navigation engineers from the Space Communications and Navigation (SCaN) program are developing a navigation architecture that will provide accurate and robust Position, Navigation, and Timing (PNT) services for the Artemis missions. Global Navigation Satellite System (GNSS) signals will be one component of that architecture. GNSS use in high-Earth orbit and in lunar space will improve timing, enable precise and responsive maneuvers, reduce costs, and even allow for autonomous, onboard orbit and trajectory determination.
Although the United Kingdom’s (UK) “Brexit” departure from the European Union (EU) on Jan. 1 will not affect its membership status in the European Space Agency (ESA), the nation’s participation in a number of European space programs is either ending or being curtailed.
On Christmas Eve, the UK and EU announced an agreement in principle that will govern trade, security and political relations after Brexit. Under the agreement, the UK’s participation in the:
Galileo satellite navigation and European Geostationary Navigation Overlay Service (EGNOS) program will end;
Copernicus Earth observation satellite program will continue, contingent upon a further agreement to be worked out next year; and
EU Space Surveillance and Tracking (EUSST) program will end, although the Britain will continue to receive data as a non-EU country.
The Sentinel-6 Michael Freilich spacecraft will soon be heading into orbit to monitor the height of the ocean for nearly the entire globe.
VANDENBERG AIR FORCE BASE, Calif. (NASA PR) — Preparations are ramping up for the Nov. 10 launch of the world’s latest sea level satellite. Since arriving in a giant cargo plane at Vandenberg Air Force Base in California last month, Sentinel-6 Michael Freilich has been undergoing final checks, including visual inspections, to make sure it’s fit to head into orbit.
LONDON (UK Government PR) — New options for a UK satellite navigation and timing capability programme to support the nation’s critical infrastructure will be explored by the government, it was announced today (Thursday 24 September).
The Space-Based Positioning Navigation and Timing Programme (SBPP) will explore new and alternative ways that could be used to deliver vital satellite navigation services to the United Kingdom which are critical for the functioning of transport systems, energy networks, mobile communications and national security and defence, whilst boosting the British space industry and developing the UK’s own capabilities in these services.
GUILDFORD, UK (SSTL PR) — Surrey Satellite Technology Ltd (SSTL) has successfully demonstrated GNSS-Reflectometry (GNSS-R) from its 18kg DoT-1 satellite. SSTL has pioneered the new field of GNSS-R with successful payloads on board TechDemoSat-1 and the CYGNSS constellation, and is continuing to develop the technology and data analysis in pursuit of this new science.
The latest GNSS-R payload on-board the DoT-1 satellite is incorporated within the new small form factor Core Avionics module integral to all SSTL’s future satellite platforms. This innovation paves the way for any SSTL satellite that can accommodate a nadir pointing antenna to become part of a GNSS-R small-sat constellation.
AALBORG EAST, Germany (GomSpace PR) — GomSpace and Fugro are collaborating to offer world class position and timing accuracy on nanosatellite.
SpaceStar is the next generation technology for the provision of high-accuracy real-time navigation services in Low Earth Orbit (LEO), leveraging on the extensive Fugro expertise of delivering of GNSS (Global Navigation Satellite Systems) augmentation services for professional applications.
NOAA will purchase radio occultation (RO) data from commercial companies after determining that the measurements are useful in improving weather forecasting.
In a report released last week, NOAA said measurements provided by Spire Global and GeoOptics satellites during the second round of the Commercial Weather Data Pilot (CWDP) program in 2018 and 2019 demonstrated the utility of commercial RO data.
SILVER SPRING, Md. (NOAA PR) — With predictions for an above-normal 2020 Atlantic hurricane season, NOAA forecasters have added meteorological muscle from a new combination of satellite data flowing into its computer models.
The Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC-2) is a new fleet of six small satellites launched last June. Since May 26, the constellation has begun feeding more than 4,000 vertical sets of measurements of atmospheric temperature and humidity in the tropics and subtropics daily into our forecast models. Measuring the moisture in and around tropical cyclones is important because it is a key ingredient for their development and intensification.
The Trump Administration is proposing a 13.57 percent reduction in the National Oceanic and Atmospheric Administration’s (NOAA) budget for fiscal year (FY) 2021, according to budget documents.
The $4.63 billion proposal would cut NOAA spending by $727.64 million below the FY 2020 budget. Although key satellite and commercial data purchasing programs would received increases, dozens of other programs would see their funding reduced or eliminated completely.
NOAA’s climate change research programs would be reduced by more than half from $169.5 million to $83.2 million. President Donald Trump has called global warming a hoax invented by the Chinese government to destroy the American economy.
Swindon, England (UKSA PR) — The UK Space Agency has awarded more than £4 million to Spire Global to demonstrate cutting-edge space technology including ‘parallel super-computing’.
Today’s announcement by UK Government ministers Lord Henley and Lord Duncan, gives the green light to missions designed to showcase the technology and put UK companies into orbit faster and at a lower cost. The UK is the largest funder of the European Space Agency’s Advanced Research in Telecommunications Satellites (ARTES) programme, which transforms research into successful commercial projects.