Earth Monitoring with GNSS signals is a promising novel area for Earth Observations systems. The increasing number of sources, together with the low level of requirements (power, size, budget, etc.) and possibility of using COTS hardware, makes these systems potentially very attractive for future space missions, making this a very attractive complementary technology to traditional active radar systems. Since the use of reflected GNSS signals was proposed in 1993, the number of research activities and scientific publications has been steadily increasing, especially in recent years, where the attention devoted to GNSS-R has increased exponentially after NASA has approved the first operational use of GNSS-R from space, the eight-satellite CYGNSS constellation. The European GNSS-R Earth Monitoring project (EGEM, www.e-gem.eu), started in 2014, is an FP7 funded project which joins many of the European experts in the field of GNSS-R and involves ten of the top European institutions in this field. The goal of this project is quite ambitions, covering both instruments and scientific algorithms developments of for a number of applications.
展开▼
