June 1998

 

Table 25.1: GBES Tracking Pass Summary for June 1998

		no	% lost			Attended	Unattended
pass	% good	op.	total	hardware	software	% recovered	% recoverable	exp	notes
9806010554	98.98
9806011214	0.00		100						lightning strike-power supplies out
9806011457	99.79								phase jump
9806020712	99.35
9806030830	99.46								phase jump
9806040948	99.23								phase jump
9806050500	99.94
9806061423	98.19								phase jumps, HALCA Ku unwrap
9806070722	99.54
9806080840	95.92		4						HALCA signal late onto GB
9806080947	99.88								phase jumps
9806090959	47.65		52						HALCA disappeared
9806110615	98.24	X	1						HALCA signal late onto GB
9806110757	99.91
9806120733	95.38		4						HALCA signal late onto GB, weak signal
9806120851	99.89
9806130851	87.56		12	12		50			break setting problem
9806141008	93.90		6					V080m	HALCA signal late onto GB, phase jumps
9806150733	99.85	X
9806160625	95.56		4	2					HALCA signal late onto GB, phase jumps
9806160731	99.93
9806170742	99.53							V047s
9806180900	99.41							V047y
9806191018	92.45		7			92		V131a1	Severe Thunderstorms, tape drive problem
9806200516	99.31					100			ant. oscillations before pass
9806201543	35.87	X	64	64			100		antenna oscillations
9806210903	99.59					100			ant. oscillations before pass
9806211709	80.82	X	19	19			100		HALCA Ku unwrap, ant. osc.
9806221016	99.78					100			phase jump, ant. osc.
9806230927	99.86
9806240408	99.45
9806250525	99.63
9806251145	99.57							VS04w
9806260924	99.46	X
9806270948	0.00	X	100				100		Severe Thunderstorm, tornado?
9806271048	94.86		5			94			Severe Thunderstorm
9806280313	99.81	X
9806281134	95.79		4		4				GBES command file error
9806281212	99.64
9806290416	98.07	X	1						Severe thunderstorms
9806301200	99.83

There was a total of 41 tracking passes in June of 1998 with 8 of these being unattended tracking passes. Of the 33 attended tracking passes 28 collected the maximum amount of valid data possible. Of the 5 attended passes that did not collect the maximum amount of valid data possible, three were due to the effects of severe thunderstorms. Of the 8 unattended tracking passes 5 collected the maximum amount of good data. There were 6 tracking passes that lost data due to problems on HALCA.

Of the 5 recording passes, 3 collected the maximum amount of good data while the other recording passes lost 7% of the data due to inclement weather and 6 with HALCA.

$\bullet$ 33 of 41 attended passes had max good data.

$\bullet$ Operators helped increase amount of good data in 4 of 8 ``bad'' attended passes.

$\bullet$ 3 of 8 unattended passes had max good data.

$\bullet$ Operators would have increased amount of good data in 4 of 5 ``bad'' unatt ended passes.

$\bullet$ SRT and orbit prediction file problems resulted in the loss of 0.17 tracking passes.

$\bullet$ A total of 0.52 tracking passes lost data due to problems with HALCA.

$\bullet$ A total of 0.04 tracking passes lost data due to software problems.

$\bullet$ A total of 0.97 tracking passes lost data due to hardware problems.

$\bullet$ A total of 2.13 tracking passes lost data due to inclement weather.

$\bullet$ 3 of 5 recording passes were completely successful.

$\bullet$ A total of 0.13 recording passes lost data.