International Laser Ranging Service

SLR Global Performance Report Card

May 1, 2017 through April 30, 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	15818	2727	10498	29043	279006	24962	40839	344807	191130	3.1	4.6	4.7
Changchun	7237	9104	1039	5344	15487	82626	6865	15472	104963	55542	6.4	8.3	9.8
Mount_Stromlo_2	7825	6725	1282	4331	12338	99462	10653	15589	125704	84225	3.3	4.5	7.4
Zimmerwald_532	7810	5784	921	2819	9524	97365	12077	8976	118418	80876	7.2	9.9	12.7
Matera_MLRO	7941	4428	1582	2705	8715	53020	13322	12304	78646	68112	.9	2.7	3.1
Herstmonceux	7840	4182	675	3311	8168	58388	7915	10222	76525	49011	3.4	9.2	12.6
Greenbelt	7105	5982	954	956	7892	116547	9762	3974	130283	77145	2.2	6.6	9.2
Monument_Peak	7110	5140	645	1145	6930	91163	4902	2951	99016	53326	4.8	7.7	9.6
Graz	7839	3480	482	2481	6443	71305	3322	12812	87439	44184	2.3	5.6	5.2
Shanghai_2	7821	2502	557	2609	5668	22301	6085	10937	39323	30526	9.4	9.7	8.5
Potsdam_3	7841	4279	502	661	5442	73617	4733	3086	81436	44946	6.8	11.8	12.6
Wettzell	8834	2923	428	2074	5425	25975	2664	7661	36300	22246	6.8	8.5	12.2
Wettzell_SOSW	7827	1686	386	2207	4279	17684	1972	6434	26090	13639	6.8	10.1	10.1
Kunming	7819	2122	369	1446	3937	29388	1731	4046	35165	18027	6.5	12.6	12.1
Beijing	7249	1764	371	1323	3458	14541	2551	4712	21804	15682	13.3	14.7	21.9
Hartebeesthoek_HARL	7501	2081	570	752	3403	29184	4049	3214	36447	26733	3.6	9.5	10.3
Altay	1879	235	345	2462	3042	4209	1966	8859	15034	7296			33.1
Simeiz	1873	2084	343	287	2714	24240	2103	1301	27644	17483	21.4	11.2	13.4
Arequipa	7403	2485	105		2590	28975	565		29540	17941	6.2	7.4	18.3
Haleakala	7119	2099	436	1	2536	32511	3327	3	35841	25122	3.1	7.0	9.0
Komsomolsk	1868	119	234	2028	2381	2045	1359	7490	10894	4843			30.7
Katzively	1893	1931	274	55	2260	21171	2108	314	23593	16760	27.2	10.1	10.6
Badary	1890	2014	135	96	2245	19091	668	319	20078	11256		28.2	28.8
Irkutsk	1891	1103	209	624	1936	9794	1782	1334	12910	10237	23.9	30.1	35.0
Brasilia	7407	524	381	1028	1933	1922	1348	3687	6957	5148	42.0		34.3
Simosato	7838	1378	395	8	1781	21740	6216	29	27985	33384	3.9	8.0	13.7
Papeete	7124	931	162	366	1459	15823	1507	1847	19177	11682	7.0	8.5	9.9
Zelenchukskya	1889	866	196	380	1442	8789	1469	1057	11315	9375		22.8	37.5
Baikonur	1887	92	401	916	1409	589	1677	3387	5653	5598			31.1
Arkhyz	1886	421	183	347	951	3334	850	1085	5269	4550		35.6	34.3
Riga	1884	765	71	20	856	13739	539	94	14372	6773	11.0	16.0	15.8
Borowiec	7811	619	160	15	794	10612	1617	68	12297	9538	11.8	20.8	16.2
Grasse_MEO	7845	268	319	53	640	6419	4106	899	11424	16947	8.8		14.6
Mendeleevo	1874	142	83	282	507	2667	1296	842	4805	4887	-0.1	22.3	28.9
Kiev	1824	355	36		391	2451	196		2647	2109	11.7	25.1	24.0
Sejong	7394	306	48	1	355	4588	492	5	5085	4065	3.9	8.9	11.1
McDonald	7080	256	42		298	2030	267		2297	2076	7.3	9.8	13.0
Svetloe	1888	68	1	2	71	741	1	5	747	265

 

 

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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	211	749	174	28.6
Matera_MLRO	7941	21	44	12	39.1

 

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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	2.8	12.8	1.4	100.0	1.6	5.3	1.0	100.0	1.9	14.4	2.4	99.7	2.0	14.1	2.7	99.5	1.5	9.9	1.1	92.8
Changchun	7237	4.0	12.8	3.5	100.0	2.6	12.2	4.7	100.0	2.0	17.6	8.9	99.2	4.2	14.5	7.0	99.0	1.9	36.6	20.5	93.1
Mount_Stromlo_2	7825	3.4	14.5	6.5	100.0	2.5	6.0	4.3	100.0	2.3	16.1	8.5	100.0	3.1	15.6	5.9	97.3	2.0	11.0	3.2	95.2
Zimmerwald_532	7810	2.9	9.6	5.0	100.0	1.6	6.3	2.9	100.0	1.6	15.9	6.5	99.4	2.4	9.4	4.0	96.0	1.7	9.6	3.3	94.5
Matera_MLRO	7941	2.4	9.3	4.2	100.0	1.1	7.3	2.6	100.0	1.2	14.7	4.5	99.6	1.6	14.0	4.0	99.8	0.9	13.3	5.4	96.1
Herstmonceux	7840	1.9	10.5	1.6	100.0	1.1	5.6	1.7	100.0	1.1	11.2	2.9	98.8	1.7	7.5	2.2	99.6	0.9	9.0	2.2	97.2
Greenbelt	7105	2.9	9.8	3.0	100.0	1.7	8.0	1.7	100.0	2.0	11.1	2.1	99.7	2.1	11.2	3.6	98.9	2.1	11.4	3.4	92.7
Monument_Peak	7110	3.8	13.9	6.5	100.0	2.2	7.2	3.5	100.0	2.7	13.3	5.9	99.0	2.1	14.9	3.8	96.8	1.7	17.4	5.0	88.5
Graz	7839	2.2	7.4	2.9	100.0	1.2	5.6	2.1	100.0	1.1	9.5	6.7	96.9	2.6	8.6	3.2	96.5	0.6	10.2	3.2	95.7
Shanghai_2	7821	3.2	15.0	7.3	100.0	1.6	12.3	6.6	100.0	1.6	20.1	12.0	99.5	2.3	21.0	8.3	99.6	1.3	17.5	5.6	95.3
Potsdam_3	7841	2.1	7.6	4.3	100.0	1.4	7.5	3.4	100.0	1.3	13.5	3.8	100.0	2.0	8.3	5.2	99.1	1.0	13.5	3.9	96.4
Wettzell	8834	4.2	15.1	5.2	100.0	2.7	7.1	3.6	100.0	1.9	15.4	7.8	99.8	2.7	7.8	2.8	100.0	2.5	15.0	3.4	92.5
Wettzell_SOSW	7827	2.3	11.6	4.0	100.0	1.6	8.9	4.8	100.0	0.9	16.6	9.0	98.2	1.5	13.9	5.8	93.1	0.6	14.7		96.7
Kunming	7819	4.8	16.8	26.2	98.6	3.6	15.7		100.0	3.1	27.7	15.9	97.4	4.3	23.3		99.6	2.5	19.9		98.5
Beijing	7249	9.6	15.1	5.0	94.3	14.3	22.1	7.6	100.0	4.5	23.4	8.8	83.3	8.6	21.9	8.3	95.3	5.7	18.7	9.1	87.6
Hartebeesthoek_HARL	7501	2.9	8.8	9.3	100.0	1.6	5.2	4.5	100.0	1.8	18.5	9.5	100.0	2.2	17.1	8.2	100.0
Altay	1879	4.0	9.7	8.1	100.0	2.3	11.9	9.0	100.0	2.3	21.4	14.6	100.0	3.0	17.9	7.6	99.2	2.1	21.1	8.6	93.9
Simeiz	1873	21.0	32.0	12.7	89.8	22.1	37.3	16.9	100.0	5.8	38.6	15.3	61.6	18.9	36.1	12.6	92.2
Haleakala	7119	4.6	18.8	10.3	99.4	2.8	6.0	2.0	100.0	3.0	21.0	2.2	98.7	4.0	21.6	4.9	98.7	4.8	20.8	12.8	90.0
Komsomolsk	1868	5.7	12.8	13.8	95.9	4.9	21.2	17.4	100.0	4.3	29.4	27.0	96.0	4.7	23.5	18.2	96.7	4.3	13.9	9.1	93.0
Katzively	1893	13.2	10.6	8.5	97.7	10.7	18.0	10.6	100.0	6.5	18.7	10.8	82.6	10.0	17.6	10.1	91.6	9.2	15.0	13.3	92.3
Irkutsk	1891	8.5	13.6	6.9	99.3	8.5	12.9	8.3	100.0	4.6	19.5	6.6	89.1	7.4	13.2	10.2	92.9	6.5	17.9	7.0	94.9
Brasilia	7407					3.5	23.0	8.9	100.0	2.6	36.3	23.6	91.5
Simosato	7838	5.3	14.5	8.6	100.0	3.4	10.2	8.9	100.0	4.4	14.6	11.2	97.9	4.6	13.5	7.5	100.0	5.5	17.2	7.6	95.5
Papeete	7124					3.1	5.1	5.2	100.0	2.9	11.1	8.6	98.8	3.5	23.5	10.3	97.1
Zelenchukskya	1889					6.6	13.8	8.6	100.0	4.9	20.9	12.9	94.7	6.8	13.0	11.6	98.4	5.1	19.8	9.1	95.3
Baikonur	1887					6.2	16.2	14.4	100.0	3.5	25.8	17.3	94.3	6.4	13.5	8.9	96.5	4.6	25.4	15.1	97.2
Arkhyz	1886					5.9	22.5	11.6	100.0	5.2	30.3	17.4	87.0	6.6	27.9	11.0	95.4	7.6	13.6	16.0	99.2
Riga	1884	13.9	11.2	23.7	100.0	8.1	27.2	23.6	100.0	5.8	31.6	25.5	77.9	11.4	27.3	30.8	94.5	8.5	20.4		91.8
Borowiec	7811	5.2	8.3	14.1	99.8	3.9	8.1	10.2	100.0	3.4	12.5	17.9	98.5	4.2	8.1	9.3	98.5	2.6	11.7	11.5	93.7
Grasse_MEO	7845	3.6	6.8	2.9	100.0	2.7	10.2	6.6	100.0	2.9	21.7	6.8	99.8	2.9	9.9	6.0	97.5	3.0	11.7	4.4	96.4
Mendeleevo	1874					3.2	11.4	7.7	100.0	3.8	16.5		98.4	4.5	13.1	8.3	98.0	3.8	15.6		94.4
McDonald	7080					2.2	8.2	4.7	100.0	2.5	11.8	13.1	98.8
Svetloe	1888	6.9	10.0		100.0	5.3	10.7		100.0