CCSDS 508.0-R-1, Conjunction Data Message (Red Book, Issue 1 ...

DRAFT CCSDS RECOMMENDED STANDARD FOR CONJUNCTION DATA MESSAGESSCREEN_VOLUME_XSCREEN_VOLUME_YSCREEN_VOLUME_ZENTRY_TIMEEXIT_TIMECOLLISION_PROBABILITYKeyword Description Units ObligatoryCOLLISION_PROBABILITY_METHODThe R or T (depending on if RTNor TVN is selected) componentsize of the screening volume in theSCREEN_VOLUME_FRAME.The T or V (depending on if RTNor TVN is selected) componentsize of the screening volume in theCREEN_VOLUME_FRAME.The N component size of thescreening volume in theSCREEN_VOLUME_FRAME.The time in UTC when Object2enters the screening volume (see6.2.2.11 for formatting rules).The time in UTC when Object2exits the screening volume (see6.2.2.11 for formatting rules).The collision probability is theprobability that Object1 andObject2 will collide.The method that was used tocalculate the collision probability(available options are FOSTER-1992, CHAN-1997, PATERA-2001,ALFANO-2005 or OTHER [seeannex C for definition]).mmmn/an/an/an/aNoNoNoNoNoNoNo3.4 CDM METADATAThe CDM metadata shall consist of the KVN elements defined in table 3-3, which specifiesfor each KVN metadata item:a) the keyword to be used;b) a short description of the item;c) normative (N) values or examples (E) of allowed values;d) the distinction of normative values versus examples of allowed values is specified inthe ‘N/E’ column in the table; ande) whether the item is obligatory or optional.NOTE – Table 3-3 and table 3-4 will be used to define both Object1 and Object2depending on the value of the keyword OBJECT which is specified in table 3-3.CCSDS 508.0-R-1 Page 3-4 March 2012