The Global Ozone Monitoring Experiment (GOME) allows the retrieval of tropospheric vertical column densities (VCDs) of NO2 on a global scale. Regions with enhanced industrial activity can clearly be detected, but the standard spatial resolution of the GOME ground pixels (320×40 km2) is insufficient to resolve regional trace gas distributions or individual cities. Every 10 days within the nomina...

As an essential infrastructure that provides positioning, navigation, and timing services, China constructed the BeiDou Navigation Satellite System (BDS). The last BDS satellite was launched in June 2020, which represents completion of BDS. BDS’s constellation consists Medium Earth Orbit (MEO), Inclined Geosynchronous (IGSO), Geostationary satellites. precise modeling non-conservative forces fo...

O a clear night, anyone with a good telescope can see that the sky is strewn with thousands of satellites— some are manmade satellites, launched into orbit for communications and defense, and some are natural ones, such as our beloved Moon. However, there is another type of satellite that is much closer to home: the human genome is also littered with “satellites.” Genetic satellites are entirel...

The Gamma-Ray Large Area Space Telescope (GLAST), scheduled to be launched in fall 2007, is the next generation satellite for high-energy gamma-ray astronomy. The Large Area Telescope (LAT), GLAST main instrument, with a wide field of view (> 2 sr), a large effective area (> 8000 cm at 1 GeV) and 20 MeV 300 GeV energy range, will provide excellent high energy gamma-ray observations for Dark Mat...

An international science program titled “Digital Belt and Road (DBAR)” was launched in Beijing last year, aiming for the sustainable development of the Belt and Road region using Earth observation big data. This presentation firstly introduces China’s Earth observation satellites including the four remote sensing satellite series, a high-resolution Earth observation system and other Earth obser...

With TerraSAR-X and RADARSAT-2, two dual-channel SAR satellites will be launched in the next months. Both sensors allow for detecting moving objects, and, by this, enable traffic monitoring from space. This paper revises the theoretical background of traffic monitoring with space-based SARs and presents concepts for the TerraSAR-X traffic monitoring system. Compared to previous work an extensiv...

Ultrasound has revolutioned the care of women carring twins. First trimester evaluation is the best time to determine chorioniocity and amnioniocity in multiple gestations. First trimester diagnosis is based on the number of gestational sacs, amnions and yolk sacs. Growth rate in multiple multiple gestations during the fist and early second trimesters parallels the growth rate of singleton preg...

After an introduction on phenomena due to spin and mass-energy currents on clocks and photons, we review the 1995-2001 measurements of gravitomagnetic field of Earth and Lense-Thirring effect obtained by analyzing the orbits of the two laserranged satellites LAGEOS and LAGEOS II; this method has provided a direct measurement of Earth’s gravitomagnetism with accuracy of the order of 20 %. A futu...

After an introduction on phenomena due to spin and mass-energy currents on clocks and photons, we review the 1995-2001 measurements of gravitomagnetic field of Earth and Lense-Thirring effect obtained by analyzing the orbits of the two laserranged satellites LAGEOS and LAGEOS II; this method has provided a direct measurement of Earth’s gravitomagnetism with accuracy of the order of 20 %. A futu...

Proceedings of 2002 Core Technologies for Space Systems Conference, Colorado Springs, CO, November 2002 ABSTRACT The time, orbit and attitude data, obtained from GPS, enables spacecraft system developers to accomplish autonomous orbit maneuver planning and autonomous stationkeeping maneuvers on-board the spacecraft. Current generation GPS navigation will provide accuracy on the order of 2 to 5 ...