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--- en:graves [2014/11/27 12:22] – [Meteor tracking using GRAVES] kaklik
+++ en:graves [2014/11/27 12:26] – [Meteor tracking using GRAVES] kaklik
@@ Line 4: / Line 4: @@
 Bistatic [[https://en.wikipedia.org/wiki/Graves_%28system%29|GRAVES radar]], located in France (JN27SI), operates at frequency 143.050 MHz 24 hours a day (with high level of radiated power - several MW). Its objective is so-called [[https://en.wikipedia.org/wiki/Air_Force_Space_Surveillance_System|space surveillance]], mapping man-made objects orbiting the Earth over French territory.
-{{:graves:graves_range.jpg?600|}}
+{{:graves:graves_range.jpg?600|GRAVES Radar radiatin pattern projection in 100km above Earth surface and theoretical visibility radius}}
+The image above shows a gray colored area which is projection of GRAVES radiation pattern to spherical surface 100km above Earth. The red triangle indicates theoretical visibility limit  of reflection comming from the gray area.
 ===== Radar parameters =====