International Laser Ranging Service

SLR Global Performance Report Card

April 1, 2011 through March 31, 2012

The performance report card is divided into three tables for readability. Table 1 contains performance parameters based on data volume, on-site processing statistics and operational compliance issues. Table 1 L contains information about Lunar Laser Ranging during the past year. Table 2 contains performance parameters based on various Analysis Centers' rapid orbital analysis results.

Below are the detailed descriptions of each column in Table 1; plots of the columns are linked in this description and in Table 1:

• Column 1 is the station location name.
• Column 2 is the monument marker number.
• Column 3 is the LEO pass total during the past 12 months.
• Column 4 is the LAGEOS pass total during the past 12 months.
• Column 5 is the high satellite pass total during the past 12 months.
• Column 6 is the pass total (i.e., all satellites) during the past 12 months.
• Column 7 is the LEO NP total during the past 12 months.
• Column 8 is the LAGEOS NP total during the past 12 months.
• Column 9 is the high satellite NP total during the past 12 months.
• Column 10 is the NP total (i.e., all satellites) during the past 12 months.
• Column 11 is the total tracking minutes (i.e., all satellites) during the past 12 months. This is computed by the summation of the number of normal points multiplied by its bin size in minutes.
• Column 12 is the average single-shot calibration RMS, in millimeters, during the last quarter.
• Column 13 is the average single-shot Starlette RMS, in millimeters, during the last quarter.
• Column 14 is the average single-shot LAGEOS RMS, in millimeters, during the last quarter.

The first entry in each table is for the performance baseline goal. Note: There are no baseline goals for NP data quantities, single shot RMS's.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total passes.

Table 1

Site Information		Data Volume									Data Quality
Column 1	2	3	4	5	6	7	8	9	10	11	12	13	14
Location	Station Number	LEO pass Tot	LAGEOS pass Tot	High pass Tot	Total passes	LEO NP Total	LAGEOS NP Total	High NP Total	Total NP	Minutes of Data	Cal. RMS	Star RMS	LAG RMS
Baseline		1000	400	100	1500
Yarragadee	7090	11325	1963	3928	17216	190456	23260	21493	235209	210947	5.5	7.9	9.2
Zimmerwald_532	7810	9028	1725	5078	15831	155390	25347	28921	209658	239706	4.7	8.5	11.0
Graz	7839	4742	747	2541	8030	79868	6404	15504	101776	114027	2.2	3.7	5.1
Matera_MLRO	7941	4778	1444	1478	7700	61764	15851	10598	88213	105263	1.4	3.2	5.2
Changchun	7237	4991	700	1760	7451	45458	4158	7546	57162	59779	4.4	9.8	12.8
Herstmonceux	7840	3844	810	1964	6618	54156	8882	6680	69718	67890	6.3	11.2	14.3
Greenbelt	7105	5208	666	577	6451	97397	6451	3246	107094	57155	5.9	10.0	10.6
Mount_Stromlo_2	7825	4980	763	296	6039	49198	5128	1237	55563	34022	3.5	5.7	7.6
Wettzell	8834	3675	815	832	5322	36258	6106	3929	46293	44283	5.2	11.7	15.4
San_Juan	7406	3070	592	948	4610	41125	7024	6282	54431	57901	5.3	11.0	9.3
Hartebeesthoek	7501	2768	723	487	3978	41951	8414	3687	54052	48450	5.8	13.3	10.9
Monument_Peak	7110	2756	581	538	3875	48742	6440	3146	58328	43140	6.8	10.7	12.5
San_Fernando	7824	2374	241	18	2633	27120	1113	49	28282	11385	6.3	12.9	17.8
Potsdam_3	7841	2101	333	114	2548	37295	3686	873	41854	22261	8.2	12.3	14.8
Katzively	1893	1551	318	256	2125	20427	2567	1707	24701	20131	34.8	68.3	38.0
Haleakala	7119	1668	430		2098	27799	5360		33159	19396	4.0	8.3	10.7
Grasse_MEO	7845	883	552	589	2024	27887	6429	2510	36826	32697	10.1	15.7	16.4
Arequipa	7403	1869	146		2015	26082	1118		27200	10733
Simosato	7838	1198	453	135	1786	39345	14030	1831	55206	51206	5.4	8.2	9.5
Shanghai_2	7821	1129	225	408	1762	10815	1198	2068	14081	16146	6.1	11.1	12.6
McDonald	7080	1025	422	176	1623	10270	3747	698	14715	14458	7.5	12.2	12.8
Simeiz	1873	1061	326	31	1418	13986	2508	203	16697	10290		49.0	45.0
Riga	1884	1159	113	2	1274	22251	995	11	23257	8092	.3	12.6	17.8
Kiev	1824	935	194	84	1213	7104	903	248	8255	5297	13.5	27.3	23.6
Koganei	7308	392	188	312	892	4967	1405	2616	8988	17548	8.1	11.5	14.0
Papeete	7124	482	139		621	8430	1990		10420	6723	4.9	7.8	8.9
Altay	1879	120	165	280	565	1296	1118	1261	3675	8964			31.1
Komsomolsk	1868	28	93	158	279	217	614	619	1450	4430			36.7
Tanegashima	7358	227	14	30	271	2483	98	445	3026	3239	2.6	4.9	5.8
Arkhyz	1886	26	68	86	180	479	760	435	1674	3857
Beijing	7249	146	19	6	171	1950	162	39	2151	1188	20.0	12.4	16.4
FTLRS_Tahiti	7822	69	16		85	1317	141		1458	726
Concepcion_847	7405	1325	631	267	2223	13622	6737	1691	22050	27591	6.1	15.1	15.4
Koganei	7328	21	1		22	298	5		303	107
Baikonur	1887	5	4		9	27	24		51	61		35.5	31.4
Helwan	7831	2			2	12			12	6

 

 

Below are the detailed descriptions of each column in Table 1 L:

• the first column, L1, is the station location name.
• the second column, L2, is the monument marker number.
• the third column, L3, is the number of nights during the past 12 months in which there were Lunar ranging measurements
• the fourth column, L4, is the number of Lunar Laser Ranging normal points during the past 12 months
• the fifth column, L5, is the number of Lunar Laser Ranging normal points during the past 3 months
• the sixth column, L6, is the average Lunar Laser Ranging normal points rms 3 months in mm

 

Table 1 L

Site Information		Data Information
Column L1	L2	L3	L4	L5	L6
Location	Station Number	num nights tracking last 12 mon	num npt last 12 mon	num npts last 3 mon	ave npt rms last 3 mon
Grasse_MEO	7845	26	374	150	24.1
McDonald	7080	12	27	14	46.0
Matera_MLRO	7941	1	3

 

 

Below are the detailed descriptions of each column in Table 2:

• the first column is the station location name.
• the second column is the monument marker number.
• following columns are in grouped by analysis center with four columns for each
  • the first AC column is the average LAGEOS normal point RMS, in millimeters, during the last quarter
  • the second AC column is the measure of short term bias stability, in millimeters, during the last quarter. The short term stability is computed as the standard deviation about the mean of the pass-by-pass range biases (minimum number of passes in quarter is 10)
  • the third AC column is the measure of long term bias stability, in millimeters, during the past year. The long term stability is the standard deviation of the monthly range bias estimates. A station must have tracked LAGEOS (1,2) in at least 8 of the last 12 months in order to compute this metric.
  • the fourth AC column is the percentage of LAGEOS normal points that were accepted in the analysis.

The first entry in each table is for the performance baseline goal.

Additional Notes: Blanks in any columns implies either that there was no data or that there was insufficient data. Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total data volume.

 

Table 2

Site Information		DGFI Orbital Analysis				Hitotsubashi Univ. Orbital Analysis				JCET Orbital Analysis				MCC Orbital Analysis				SHAO Orbital Analysis
Station Location	Station Number	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP
Baseline		10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	20.0	95
Yarragadee	7090	3.8	16.3	2.9	100.0	2.0	9.0	3.6	100.0	4.5	24.0	3.9	99.2	2.7	15.7	2.6	98.0	2.0	12.6	2.8	95.0
Zimmerwald_532	7810	2.4	13.4	5.5	99.9	1.2	6.2	3.3	100.0	2.6	19.4	6.3	99.4	2.2	9.9	2.8	99.0	1.3	9.1	2.4	96.0
Graz	7839	2.2	11.8	5.9	100.0	1.0	6.2	6.1	99.9	3.0	22.3	7.7	99.6	1.8	7.9	2.6	98.4	1.0	9.5	5.8	96.2
Matera_MLRO	7941	2.8	13.3	3.6	99.8	1.7	8.0	4.6	99.8	3.0	32.5	5.9	96.2	2.4	15.3	4.2	99.1	2.6	30.7	3.1	96.9
Changchun	7237	4.8	25.2	9.3	97.6	3.3	23.2	6.0	99.6	3.6	27.7	4.9	95.0	3.7	26.0	14.0	97.1	2.2	22.9	14.6	93.6
Herstmonceux	7840	2.8	13.4	3.8	100.0	1.7	6.1	1.7	100.0	3.0	20.1	5.2	100.0	2.9	8.1	2.7	97.9	2.1	10.1	3.3	96.4
Greenbelt	7105	4.4	15.8	4.6	100.0	2.5	10.0	3.5	100.0	5.3	27.5	4.1	97.4	2.9	17.9	6.8	97.0	2.2	15.1	4.1	94.6
Mount_Stromlo_2	7825	4.6	19.8	4.5	100.0	3.2	11.9	4.6	100.0	3.0	17.1	11.7	94.6	4.3	9.4	6.1	94.5	2.9	14.0	3.8	95.7
Wettzell	8834	3.1	13.5	5.3	99.9	2.2	9.7	3.7	100.0	3.3	16.2	4.9	100.0	2.7	11.4	4.6	97.4	1.5	12.9	2.2	96.3
San_Juan	7406	6.5	36.8	13.0	99.5	4.3	30.6	11.1	99.9	5.5	32.9	7.4	93.1	6.0	21.7	7.0	96.3	5.2	25.3	10.2	96.3
Hartebeesthoek	7501	3.2	37.5	16.3	100.0	1.6	34.4	17.1	100.0	3.6	42.5	16.1	100.0	2.6	30.6	15.3	97.9	2.4	23.1	24.5	97.1
Monument_Peak	7110	3.8	35.3	11.3	100.0	1.9	28.9	22.9	100.0	5.1	31.2	5.8	96.2	2.2	31.2	21.5	98.6	2.2	19.3	4.7	95.8
San_Fernando	7824	5.8	28.5	10.9	99.6	5.4	18.6	6.9	99.6	4.8	23.3	11.7	96.6	5.6	20.3	10.0	98.5	5.4	21.1		98.2
Potsdam_3	7841	3.4	12.1	6.2	99.9	1.8	8.6	8.2	99.9	3.7	23.3		99.8	2.2	9.3	5.7	97.6
Katzively	1893	12.1	28.3	13.8	98.8	9.5	24.3	15.3	98.0	7.9	23.2	7.7	80.4	10.3	24.2	15.7	89.2	9.7	21.0	11.9	92.6
Haleakala	7119	3.8	19.3	4.2	99.9	2.0	9.0	3.4	99.9	3.9	18.0	4.6	97.6	3.4	20.1	8.8	98.9	3.5	28.1		96.0
Grasse_MEO	7845	4.2	15.0	9.6	100.0	3.2	15.2	15.9	99.9	4.2	11.5	8.5	99.8	3.2	10.7	8.8	96.1	2.4	13.1	3.9	94.6
Arequipa	7403	3.1	30.7	7.4	70.1													1.5	18.0	12.0	94.3
Simosato	7838	5.9	24.8	12.6	100.0	2.6	17.7	7.8	99.9	5.2	21.9	7.3	95.6	5.1	20.5	7.4	99.4	5.1	16.3	7.2	95.8
Shanghai_2	7821	5.8	17.3	24.2	99.4	5.1	15.4	14.9	100.0	3.9	18.0	14.0	100.0	5.1	18.1	15.7	98.6	3.4	20.3	19.2	98.6
McDonald	7080	3.3	20.4	7.8	99.7	2.7	9.8	2.5	100.0	5.8	26.0	8.7	98.3	3.0	16.8	9.2	96.5	2.1	15.3	5.4	95.5
Simeiz	1873	27.8	26.1	8.8	48.6	77.2	43.5	15.7	95.4					55.7	55.4	28.0	81.1
Riga	1884	13.8	31.6	21.3	93.0	15.6	35.0	15.5	99.3					11.4	39.9	25.9	88.8	10.1	22.2	13.1	92.6
Kiev	1824	10.6	45.7	20.5	87.5	13.7	31.9	26.1	94.0	2.4	29.3	16.9	50.0	12.2	26.9	27.7	92.0
Koganei	7308	5.1	41.1		98.1	3.1	63.6	29.2	99.7	3.8	24.3	27.0	27.8	4.1	31.3	35.1	97.6
Papeete	7124	3.2	12.6	4.9	100.0	2.3	9.8	10.3	100.0					3.4	21.1	7.3	100.0	3.9	28.8		95.4
Altay	1879													8.2	35.8	14.6	89.7
Komsomolsk	1868													8.6	31.2	16.0	91.9
Arkhyz	1886													7.1	30.2	9.6	93.3
Beijing	7249	6.7	41.3		98.6
Concepcion_847	7405	3.4	25.4	7.3	100.0	1.6	28.8	4.9	100.0	3.8	27.3	9.4	99.2	2.8	31.9	6.3	99.8
Baikonur	1887													9.5	11.8		88.2