RO-C-RSI-1-2-3-EXT2-1650

Data Set Overview The Rosetta (RO) Radio Science (RSI) Data Archive is a timeordered collection of raw and partially processed data collected during the Rosetta Mission to ChurymovGerasimenko. For more information on the investigations see the RSI User Manual RSIUSERMANUAL2004 in the DOCUMENT/RSI_DOC folder. This is a Global Gravity measurement covering the time 20160616T15:57:05.000 to 20160616T23:41:33.500. This data set was collected during the Rosetta Extension 2 Phase (EXT2). For more information about RSI measurements see INST.CAT or the RSI User Manual RSIUSERMANUAL2004. Mission Phase Definition Mission phase abbreviations are defined in CATALOG/MISSION.CAT and DOCUMENT/ESA_DOC/RO_EST_TN_3372.PDF. General description of radio science data Closedloop and Openloop data: There are in principle two different ways to record radio science data: Openloop and closedloop data. The CLOSEDLOOP system used a phaselock loop in the receiver to track the downlink signal, reporting both amplitude and fre quency at rates typically of 110 times per second. In the OPENLOOP system, the signal was simply converted to a baseband frequency range; the entire passband was sampled and recorded for later processing. Typical openloop sampling rates for ROS were 2000 complex samples per second. CLOSEDLOOP data are efficient for characterizing slowly changing signals; OPENLOOP data (because of their much higher volume) are usually used when the signal is very dynamic such as during an occultation or bistatic radar measurement. The data set includes four primary data types with respect to the two different ground station systems. These systems are on the one hand the ESA ground station in New Norcia, Australia (NNO) and the NASA Deep Space Network (DSN). CLOSEDLOOP data types: | | ESA: Intermediate Frequ truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]