What is Sentinel Sentinel?
Table of Contents
What is Sentinel Sentinel?
a person or thing that watches or stands as if watching. a soldier stationed as a guard to challenge all comers and prevent a surprise attack: to stand sentinel.
When did Sentinel-2 launch?
June 23, 2015Sentinel-2 / Fly date
What type of satellite is Copernicus Sentinel 6 Michael Freilich which was making news recently?
On March 22, 2022, the newest U.S.-European sea level satellite, named Sentinel-6 Michael Freilich, became the official reference satellite for global sea level measurements….
| Semi-major axis, eccentricity | 7714.432261 km, 0.000094 |
|---|---|
| Argument of perigee (ω) | 90.0º |
Can Sentinel-2 see through clouds?
In optical remote sensing in the visible spectrum you cannot see through clouds. So there is nothing you can do, except to wait for images without clouds.
How does Sentinel-2 work?
Two identical SENTINEL-2 satellites operate simultaneously, phased at 180° to each other, in a sun-synchronous orbit at a mean altitude of 786 km. The position of each SENTINEL-2 satellite in its orbit is measured by a dual-frequency Global Navigation Satellite System (GNSS) receiver.
What does the Sentinel-6 satellite do?
Designed to measure the height of the ocean – a key component to understanding how Earth’s climate is changing – Sentinel-6/Jason CS consists of two identical satellites that will be launched five years apart.
Who built Sentinel-6?
The Sentinel-6 Michael Freilich spacecraft was built by Airbus Defence and Space in Friedrichshafen, Germany.
Is Sentinel-1 still active?
The first satellite, Sentinel-1A, launched on 3 April 2014, and Sentinel-1B was launched on 25 April 2016. Both satellites lifted off from the Guiana Space Centre in Kourou, French Guiana, and each on a Soyuz rocket….Sentinel-1.
| Specifications | |
|---|---|
| Design life | 7 years |
| Production | |
| Status | Active |
| On order | 2 |
What are Sentinel-1 and Sentinel-2?
Sentinel Missions The first Sentinel-1 satellite was launched in April 2014. The objective of Sentinel-2 is land monitoring, and the mission will be composed of two polar-orbiting satellites providing high-resolution optical imagery. Vegetation, soil and coastal areas are among the monitoring objectives.
What does cloud masking do?
The cloud mask enables cloudy and cloud-free pixels to be identified. The mask includes both dense clouds and cirrus clouds with an indicator specifying the cloud type.
What does the Sentinel-2 satellite do?
The Sentinel-2 satellites will systematically acquire observations over land and coastal areas from -56° to 84° latitude including islands larger 100 km 2, EU islands, all other islands less than 20 km from the coastline, the whole Mediterranean Sea, all inland water bodies and closed seas.
What is Sentinel-1?
The Sentinel-1 mission represents a completely new approach to SAR mission design by ESA in direct response to the operational needs for SAR data expressed under the EU-ESA GMES (Global Monitoring for Environment and Security) program.