May 1999

 

Table 47.1: GBES Tracking Pass Summary for May 1999

		no	% lost			Attended	Unattended
pass	% good	op.	total	hardware	software	% recovered	% recoverable	exp	notes
9905011812	99.87								phase glitch
9905021912	99.91							W012n	phase glitch
9905032041	99.71							W012q	phase glitch
9905051729	99.94
9905061852	99.94							W056b3
9905082246	79.46		20	20		0		W039a	TWT module not working properly,operator error
9905091551	99.00								HALCA Ku antenna wire wrap
9905102047	99.30	X
9905111912	98.67								HALCA Ku antenna wire wrap, phase glitches
9905121921	95.69		4	4		0		W006b	TWT module problem, op. error, HALCA wire wrap
9905131553	85.95		14						T-storm, severe weather
9905132050	98.63							W006a	phase glitch,HALCA Ku antenna wire wrap
9905141530	99.74								many phase glitches
9905142227	99.59							VS04m	phase glitch,DRSTOP issued
9905151624	58.95		41	41		40			ACU hung-up
9905151818	99.92
9905161943	99.85
9905171923	99.11							W051a	HALCA Ku antenna wire wrap
9905182208	98.00								phase glitches, HALCA Ku antenna wire wrap
9905191628	98.42								HALCA Ku antenna wire wrap
9905201626	99.67
9905202037	99.70
9905211832	99.95
9905222144	86.79		13	5		90			Costas loop not lock at start, Thunderstorm, orbit predictions 0.5 deg off when el. > 70 deg
9905231604	99.91
9905241642	98.17								motor jump problem, HALCA KU ANTENNA WIRE WRAP
9905251628	99.23								Costas loop not lock at start due cmd file error
9905251728	---								pass cancelled for RA tests
9905271919	62.90		37						RA tests, phase glitches
9905281552	99.90							W018f	tape broke
9905291800	99.90							W027b1
9905301950	99.86
9905312045	94.34								pointing error at high elevation angle, phase glitches

There was a total of 33 tracking passes in May of 1999 with one of these being an unattended tracking pass. Of the 32 attended tracking passes 28 collected the maximum amount of valid data possible. The unattended tracking pass collected the maximum amount of good data. Two tracking passes lost data due to the Russian RadioAstron compatibility tests taking precedence over the tracking of HALCA.

Of the 10 recording passes, 8 collected the maximum amount of good data.

$\bullet$ 28 of 33 attended passes had max good data.

$\bullet$ Operators helped increase amount of good data in 2 of 5 ``bad'' attended passes.

$\bullet$ A total of 0.70 tracking passes lost data due to hardware problems.

$\bullet$ 8 of 10 recording passes were completely successful.

$\bullet$ 10 of 10 recording passes were at least 80% successful.

$\bullet$ A total of 0.24 recording passes lost data.