International Laser Ranging Service

SLR Global Performance Report Card

August 1, 2017 through July 31, 2018

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		2300	600	3000	3500
Yarragadee	7090	16364	2671	10108	29143	276459	23384	39022	338865	186884	3.1	4.7	4.9
Changchun	7237	8411	922	4992	14325	79773	6177	14648	100598	51276	4.7	8.8	10.0
Mount_Stromlo_2	7825	6745	1210	4032	11987	97368	9811	13807	120986	81675	3.3	5.0	7.0
Zimmerwald_532	7810	6362	972	3309	10643	105374	12708	11086	129168	86514	7.3	9.3	12.0
Herstmonceux	7840	5066	771	3717	9554	71055	9049	11705	91809	56612	3.4	9.4	13.3
Matera_MLRO	7941	4323	1357	2497	8177	51708	10843	11201	73752	59817	.9	2.4	2.9
Greenbelt	7105	6043	891	902	7836	116493	9161	3786	129440	75406	2.0	6.6	9.1
Wettzell	8834	3740	518	2794	7052	34116	3221	10763	48100	28420	7.4	8.4	12.1
Monument_Peak	7110	5141	642	1056	6839	90903	4797	2802	98502	52623	4.5	7.7	11.9
Potsdam_3	7841	4812	589	754	6155	79837	5271	3418	88526	48251	6.9	11.0	12.8
Graz	7839	3383	451	2289	6123	67228	2861	11596	81685	40129	2.1	6.3	5.3
Shanghai_2	7821	2555	551	2700	5806	23256	6027	11806	41089	31375	7.8	9.5	9.0
Hartebeesthoek_HARL	7501	3425	846	1048	5319	48428	5949	5074	59451	40544	4.0	11.2	10.6
Kunming	7819	2492	440	2131	5063	33629	1991	5752	41372	20826	5.6	12.2	11.6
Wettzell_SOSW	7827	1647	352	2235	4234	20399	1692	6642	28733	13837	8.4	11.8	12.5
Beijing	7249	1765	368	1251	3384	14919	2592	4640	22151	16044	7.2	13.5	19.2
Arequipa	7403	2857	116		2973	31966	559		32525	19056	6.3	8.6	8.6
Altay	1879	197	328	2403	2928	3809	1835	8192	13836	6697			36.1
Simeiz	1873	2195	303	336	2834	24856	1734	1518	28108	15385	20.3	10.5	10.6
Haleakala	7119	2127	430		2557	33609	3175		36784	24659	2.7	5.3	7.8
Irkutsk	1891	1362	295	811	2468	11355	2390	1707	15452	12823	39.5	28.7	32.8
Komsomolsk	1868	87	229	2026	2342	1731	1352	7472	10555	4593			31.0
Badary	1890	2012	147	121	2280	19033	733	386	20152	11553		31.1	28.2
Katzively	1893	1958	280	34	2272	21850	2152	200	24202	16971	25.9	11.7	11.2
Simosato	7838	1519	426	11	1956	23618	6511	66	30195	35482	3.1	7.3	15.2
Papeete	7124	1200	215	432	1847	19735	1947	2215	23897	14552	6.4	8.6	10.9
Brasilia	7407	400	332	845	1577	1640	1164	2591	5395	4389	32.4	22.8	29.5
Zelenchukskya	1889	837	172	381	1390	8073	1212	1030	10315	8110		24.1	38.6
Hartebeesthoek_HRTL	7503	818	184	366	1368	8859	783	1037	10679	5704	33.3	26.9	31.1
Baikonur	1887	28	369	920	1317	212	1599	3268	5079	5009			32.4
Riga	1884	970	90	24	1084	16947	724	116	17787	7794	9.2	14.2	15.3
Arkhyz	1886	374	178	423	975	3005	888	1364	5257	4473		53.6	31.6
Borowiec	7811	786	168	20	974	13382	1641	84	15107	10593	12.7	24.7	17.8
Svetloe	1888	524	55	71	650	3174	205	168	3547	2329		25.1	31.5
Grasse_MEO	7845	130	235	154	519	3918	3018	1282	8218	12349	8.7		14.9
Kiev	1824	436	39		475	3622	207		3829	2731	12.2	23.4	37.4
Mendeleevo	1874	122	76	274	472	2460	1222	817	4499	4631		25.5	25.1
Sejong	7394	285	52	1	338	4044	405	2	4451	3390	3.6	8.5	11.6
McDonald	7080	218	40	2	260	1873	270	4	2147	1928	9.4		11.5

 

 

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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	294	1056	88	28.3
Matera_MLRO	7941	28	55	13	51.5

 

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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 3 months
• the second AC column is the measure of short term bias stability, in millimeters, during the last 3 months. 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 the last 3 months 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	10.0	95
Yarragadee	7090					1.6	7.6	0.9	100.0	1.8	12.6	1.5	99.0	1.9	15.2	3.3	99.6	1.7	12.2	1.4	92.3
Changchun	7237					3.2	17.0	4.4	100.0	2.5	19.9	3.8	97.7	4.0	18.5	10.6	93.7
Mount_Stromlo_2	7825					2.3	7.1	2.2	100.0	2.1	11.5	4.3	94.7	2.9	12.1	2.7	96.2	1.9	9.1	4.1	94.6
Zimmerwald_532	7810					1.5	7.0	2.7	100.0	1.5	11.0	5.5	99.7	3.0	16.5	3.8	97.5	1.3	11.6	3.6	93.8
Herstmonceux	7840					0.9	6.4	1.7	100.0	0.9	10.5	2.6	99.3	1.7	15.8	2.8	98.8	0.8	9.6	2.6	96.5
Matera_MLRO	7941					1.1	6.3	2.3	100.0	0.9	13.3	3.7	98.7	1.6	13.7	3.9	99.6	0.8	13.7	4.9	96.7
Greenbelt	7105					2.6	7.4	1.0	100.0	2.1	12.3	2.2	98.7	2.3	17.2	5.3	98.0	2.1	11.1	3.2	93.2
Wettzell	8834					1.9	5.5	3.0	100.0	1.6	10.9	5.9	97.8	2.4	13.6	3.2	98.8	1.7	13.0	3.3	91.9
Monument_Peak	7110					3.5	8.1	3.0	100.0	2.6	14.4	3.7	95.2	3.3	12.1	6.0	95.7	2.4	14.8	4.5	88.9
Potsdam_3	7841					1.7	7.6	4.0	100.0	1.4	11.8	4.6	99.6	2.0	12.4	4.4	97.6	1.3	13.8	3.3	95.3
Graz	7839					1.3	5.6	2.6	100.0	0.8	9.6	6.6	98.3	2.0	15.7	3.0	96.4	0.5	12.2	3.2	97.1
Shanghai_2	7821					2.8	14.5	6.6	100.0	1.7	14.7	10.9	99.0	2.6	22.3	7.1	98.6	2.0	12.9	4.5	93.4
Hartebeesthoek_HARL	7501					1.9	6.9	4.7	100.0	2.0	12.3	9.4	97.4	2.0	17.0	9.0	98.0	2.0	16.9	2.7	91.6
Kunming	7819					4.6	17.8	9.7	100.0	3.3	25.1	14.2	95.6	5.0	18.0	11.2	98.5	2.6	15.0	13.3	100.0
Wettzell_SOSW	7827					2.4	6.8	2.8	100.0	0.9	14.4	8.3	98.7	1.9	14.5	6.2	95.3	0.6	13.3	7.8	98.4
Beijing	7249					12.8	25.8	15.5	100.0	4.0	15.6	8.0	84.8	5.8	26.7	10.9	94.5	3.8	18.2	7.8	84.9
Arequipa	7403					3.4	10.5	3.7	100.0	3.2	13.1	7.0	95.6	7.8	45.0		98.8
Altay	1879					3.0	18.5	9.6	100.0	2.1	16.7	15.4	99.1	3.8	23.2	13.2	99.1	3.1	21.3	10.1	94.0
Simeiz	1873					23.1	42.3	18.6	100.0	3.7	35.9	12.5	55.6	16.9	38.9	20.9	94.1
Haleakala	7119					2.2	12.1	2.6	100.0	2.5	17.0	3.5	97.5	4.5	19.8	4.0	98.5	1.8	19.8	13.6	89.2
Irkutsk	1891					7.1	16.9	5.1	100.0	3.8	18.9	6.1	87.1	6.8	17.7	8.3	94.0	5.9	19.3	9.7	95.4
Komsomolsk	1868					5.3	20.8	13.5	100.0	4.8	18.5	23.6	98.4	4.8	31.8	17.3	96.3	3.8	18.4	7.7	95.9
Badary	1890					6.1	12.8	5.9	100.0	3.7	21.0	10.8	87.8	5.7	22.3	9.7	97.1	5.2	13.8	9.7	95.8
Katzively	1893					10.2	20.8	7.8	100.0	4.5	23.6	9.6	74.5	15.0	20.9	10.6	86.1	10.5	17.5	7.3	95.9
Simosato	7838					4.0	12.9	3.9	100.0	4.1	17.9	6.1	92.0	5.6	16.2	7.3	99.4	6.7	23.3	6.3	92.4
Papeete	7124					3.2	11.9	11.3	100.0	2.8	19.5	20.5	96.0	4.0	20.5	15.7	98.6	4.0	12.2	16.9	90.5
Brasilia	7407					4.1	17.7	9.0	100.0	2.9	34.1	25.5	91.9	4.3	21.0	12.5	95.5
Zelenchukskya	1889					8.8	9.6	7.6	100.0	6.1	28.5	14.2	86.2
Hartebeesthoek_HRTL	7503					5.7	19.6		100.0	2.6	20.4		95.6	5.0	18.9		98.7
Baikonur	1887					5.2	16.8	11.7	100.0	2.9	24.8	24.0	96.2	6.0	20.7	13.3	96.3	3.0	19.1	11.5	96.1
Riga	1884					8.8	36.6	21.8	100.0	5.6	34.3	30.5	74.3	9.5	47.8	32.6	88.2	11.4	25.3	11.5	95.2
Arkhyz	1886					5.8	28.6	13.5	100.0	4.8	34.5	18.2	77.0	4.3	23.5	11.0	97.2	8.5	27.2	15.4	99.0
Borowiec	7811					3.3	8.5	8.5	100.0	3.4	16.8	12.0	99.4	3.9	10.0	9.0	100.0	2.2	7.5	10.9	94.0
Svetloe	1888					2.4	9.6	10.0	100.0
Grasse_MEO	7845					3.5	10.7	7.7	100.0	2.6	13.8	6.5	91.3	3.0	6.9	5.4	91.3
Mendeleevo	1874					3.6	6.2	7.5	100.0	4.6	5.6		96.2					7.8	5.7	8.0	96.1
Sejong	7394					1.5	13.2	5.5	100.0