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	11477	2107	4507	18091	192307	23345	21908	237560	194804	5.7	7.9	9.2
Zimmerwald_532	7810	8999	1700	5043	15742	155331	25363	28924	209618	217242	4.8	8.6	11.0
Graz	7839	4746	751	2542	8039	80231	6429	15580	102240	94305	2.4	3.7	5.1
Matera_MLRO	7941	4770	1518	1650	7938	61822	15870	10604	88296	102321	1.4	3.2	5.3
Changchun	7237	4877	684	1732	7293	44536	4071	7429	56036	43713	4.5	9.8	12.8
Greenbelt	7105	5271	721	713	6705	98283	6490	3283	108056	57891	11.5	9.9	10.7
Herstmonceux	7840	3837	803	1965	6605	54182	8897	6713	69792	61210	6.4	10.4	9.7
Mount_Stromlo_2	7825	4947	763	298	6008	49639	5160	1233	56032	37701	3.5	5.7	7.5
Wettzell	8834	3671	814	830	5315	36308	6115	3929	46352	44667	5.2	11.7	15.4
San_Juan	7406	3068	591	960	4619	53048	9202	8931	71181	65567	5.3	11.0	9.2
Monument_Peak	7110	2895	644	632	4171	51406	6828	3294	61528	44559	7.3	10.8	13.1
Hartebeesthoek	7501	2778	733	519	4030	41952	8414	3687	54053	48376	5.8	18.2	10.9
San_Fernando	7824	2508	244	18	2770	28840	1122	49	30011	14713	6.4	12.9	18.0
Potsdam_3	7841	2108	332	116	2556	37451	3701	883	42035	22794	8.2	12.3	14.8
Riga	1884	2191	209	4	2404	43894	1893	22	45809	20010	.3	12.6	17.8
Arequipa	7403	2191	183		2374	29600	1328		30928	13466	4.8	16.7	25.3
Concepcion_847	7405	1299	618	268	2185	13655	6748	1702	22105	27514	6.2	15.2	15.4
Haleakala	7119	1711	458		2169	28515	5400		33915	23365	4.0	8.3	10.7
Katzively	1893	1550	318	256	2124	20410	2571	1707	24688	18508	34.5	68.3	37.9
Grasse_MEO	7845	882	546	630	2058	27887	6440	2823	37150	31188	10.2	15.5	16.4
Simosato	7838	1191	451	191	1833	34554	11889	2030	48473	46825	5.4	8.2	9.6
Shanghai_2	7821	1128	226	409	1763	10846	1201	2067	14114	14915	6.1	11.1	12.6
McDonald	7080	1033	446	178	1657	10338	3759	702	14799	14931	7.5	12.2	12.9
Altay	1879	266	400	817	1483	2477	2562	2825	7864	14193			7.3
Simeiz	1873	1060	325	31	1416	13977	2503	203	16683	10053		49.8	45.0
Kiev	1824	899	189	81	1169	6845	884	239	7968	5427	13.6	20.2	20.2
Koganei	7308	414	188	340	942	5161	1405	2616	9182	13069	8.3	11.0	14.0
Papeete	7124	482	151		633	8430	1993		10423	7810	4.9	7.8	10.4
Komsomolsk	1868	41	162	374	577	280	1036	1141	2457	5618			20.2
Beijing	7249	262	41	24	327	5151	556	266	5973	4282	6.9	12.1	15.5
Tanegashima	7358	235	15	30	280	2483	98	445	3026	3242	2.5	17.7	14.3
Badary	1890	147	48	18	213	1898	444	93	2435	2370		43.2	41.7
Arkhyz	1886	26	68	86	180	479	760	435	1674	3857
Zelenchukskya	1889	25	32	63	120	286	225	270	781	911		23.2	28.4
FTLRS_Tahiti	7822	69	16		85	1317	141		1458	726
Svetloe	1888	28	25	6	59	254	186	19	459	717			31.7
Koganei	7328	21	1		22	298	5		303	107
Baikonur	1887	6	5		11	32	29		61	119		24.9	14.0
Helwan	7831	2			2	12			12	6

 

 

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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	7	31
McDonald	7080	13	27	14	46.0
Matera_MLRO	7941	1	3

 

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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	20.0	95	10.0	20.0	20.0	95	10.0	20.0	20.0	95	10.0	20.0	20.0	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