December 1998

 

Table 37.1: GBES Tracking Pass Summary for December 1998

		no	% lost			Attended	Unattended
pass	% good	op.	total	hardware	software	% recovered	% recoverable	exp	notes
9812111926	96.92								HALCA Ku-antenna wire wrap
9812122049	98.33								HALCA Ku-antenna wire wrap, phase glitches
9812132213	98.50								HALCA Ku-antenna wire wrap, phase glitches
9812150133	99.72								phase glitches
9812151811	75.98		24						HALCA Ku wire wrap, HALCA signal late, ended 3 min early
9812160303	99.83								phase glitch
9812161941	97.15								HALCA Ku-antenna wire wrap
9812172056	96.38		3						HALCA Ku-antenna wire wrap, HALCA signal 5 min late, phase glitches
9812182220	92.82		7		3	100			HALCA signal 6 min late, station computer locked up, phase glitch
9812200133	99.51
9812201818	89.12								HALCA left 3 min. early, phase glitches
9812211941	96.60								HALCA Ku-antenna wire wrap, noiser signal than usual
9812222106	98.13								HALCA Ku-antenna wire wrape, phase glitch
9812223223	99.55								phase glitches
9812250133	99.90	X*
9812251824	89.72	X*	10						HALCA signal 2 min late, Unscheduled HALCA Ku-antenna wire wrap?
9812261946	94.79		5						HALCA signal 4 min late, Unscheduled HALCA Ku-antenna wire wrap?
9812272109	95.36		4						HALCA signal 4 min late, Unscheduled HALCA Ku-antenna wire wrap? Phase glitch
9812290029	99.13
9812300203	99.89
9812301828	91.68		8						HALCA signal 3 minutes late
9812311950	93.67		6						HALCA signal 6 minutes late, Unscheduled HALCA Ku-antenna wire wrap?

There was a total of 22 tracking passes in December of 1998 with 2 of these being unattended tracking passes. Of the 20 attended tracking passes 19 collected the maximum amount of valid data possible. Of the 2 unattended tracking passes 2 collected the maximum amount of good data. There were 9 tracking passes that lost data due to problems on HALCA or HALCA pointing to the GBES late.

$\bullet$ 19 of 20 attended passes had max good data.

$\bullet$ Operators helped increase amount of good data in 1 of 1 ``bad'' attended passes.

$\bullet$ 2 of 2 unattended passes had max good data.

$\bullet$ A total of 0.64 tracking passes lost data due to problems with SRT and orbit predictions.

$\bullet$ A total of 0.03 tracking passes lost data due to software problems.