{"ob_id":13692,"uuid":"c1015c7477334094ab86ef8a1f6ee3ce","title":"Radar Altimeter 2 (RA-2)","abstract":"Radar Altimeter 2 (RA-2) is an instrument for determining the two-way delay of the radar echo from the Earth's surface to a very high precision: less than a nanosecond. It also measures the power and the shape of the reflected radar pulses.\r\n\r\nIt is a nadir-looking pulse-limited radar altimeter based on the heritage of ERS-1 RA functioning at the main nominal frequency of 13.575 GHz (Ku Band), which has been selected as a good compromise between the affordable antenna dimension that provides the necessary gain and the relatively low attenuation which experience the signals propagating through the troposphere.","keywords":"RA-2","identifier_set":[],"instrumentType":"radar","subInstrument":[],"responsiblepartyinfo_set":[]}