September 1999

 

Table 55.1: GBES Tracking Pass Summary for September 1999

		no	% lost			Attended	Unattended
pass	% good	op.	total	hardware	software	% recovered	% recoverable	exp	notes
9909011156	99.80								phase glitch DRSTOP
9909011705	99.09								HALCA Ku antenna wire-wrap
9909021221	99.95
9909031404	99.94							W081f2
9909041429	98.37		1						HALCA signal late, phase glitch DRSTOP, HALCA Ku antenna wire-wrap
9909050927	99.28								HALCA signal late, phase glitch DRSTOP
9909061713	97.53		2					W072b	HALCA Telemetry problem - stopped pass to check station, phase glitches
9909071201	99.47								HALCA signal late, antenna glitch?
9909080659	94.29	X	5						HALCA signal late
9909081318	99.38								HALCA signal late, 31 sec dropout at 13:54
9909090816	95.98	X	4						HALCA signal late
9909090948	98.88								HALCA behind water tower?, phase glitches
9909091511	99.61							W069a2	phase glitche, 30 second dropout at 17:22
9909100943	99.59								phase glitches
9909111740	99.89
9909121336	99.87								phobos lost network connectivity - no data lost
9909141003	78.74		21	21		78			Costas not locked until TWT power cycled
9909141442	99.52							VS06q	HALCA signal late
9909151559	96.81	Y	3						HALCA signal late
9909151855	99.84	Y
9909161057	99.64							W048a	HALCA signal late
9909171214	99.43							W048a	HALCA signal late
9909180712	99.00	Y							HALCA signal late
9909181331	98.16		1	1	1	98		V085g	HALCA signal late, Costas not locked until demodulator channel cycled
9909191448	99.56							V085i	HALCA signal late
9909211815	89.66	Y	10		10	89			computer /pty failed and MCB couldn't command ACU
9909240909	0.00	Y							Kagashima not command HALCA
9909241454	0.00		100			-100			operator canceled pass without authority
9909271226	99.55	Y						W018e	HALCA signal late? Ku receiver warmed up
9909280724	96.29	Y	3						HALCA signal late
9909280850	99.44	Y							HALCA signal disappeared early
9909290841	99.31	Y							HALCA signal late, phase glitch
9909300958	99.20	Y						V021a3	30 second dropout, phase glitch

There was a total of 33 tracking passes in September of 1999 with 2 of these being an unattended tracking pass. Of the 31 attended tracking passes 27 collected the maximum amount of valid data possible. Of the 2 unattended tracking passes 2 collected the maximum amount of good data. 17 tracking passes lost data due to the link from HALCA not showing up on time. 3 tracking passes lost data due to twenty or thirty second dropouts of the HALCA signal. Two tracking passes lost data due to problems with Kagashima not being able to command HALCA (the passes were not canceled in time via the SRS files).

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

10 tracking passes were observed ``remotely'' from the Jansky Operations Center. None of these tracking passes lost data due to a hardware or software problem.

$\bullet$ 27 of 31 attended passes had max good data.

$\bullet$ Operators helped increase amount of good data in 3 of 4 ``bad'' attended passes.

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

$\bullet$ A total of 0.22 tracking passes lost data due to software problems.

$\bullet$ A total of 0.11 tracking passes lost data due to hardware problems.

$\bullet$ A total of 2.00 tracking passes lost data due to problems with HALCA.

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

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

$\bullet$ A total of 0.03 recording passes lost data.

$\bullet$ A total of 0.16 tracking passes lost data due to the signal from HALCA being late.

$\bullet$ 10 of 10 tracking passes observed from the JOC were succesfull.