International Laser Ranging Service

SLR Global Performance Report Card

April 1, 2017 through March 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	15997	2775	10652	29424	287030	25798	41315	354143	195891	3.0	4.6	4.7
Changchun	7237	9446	1074	5685	16205	83408	6938	16193	106539	56267	7.0	7.8	9.6
Mount_Stromlo_2	7825	6774	1305	4213	12292	100003	10843	15107	125953	84956	3.3	4.6	7.5
Zimmerwald_532	7810	5992	940	3040	9972	102141	12743	9952	124836	84621	11.0	11.7	14.6
Herstmonceux	7840	4263	695	3444	8402	58848	8160	10717	77725	49885	3.4	9.2	12.3
Matera_MLRO	7941	4187	1527	2628	8342	49866	12972	11953	74791	65286	.9	2.8	3.1
Greenbelt	7105	5754	931	938	7623	111687	9395	3937	125019	74011	2.1	6.5	9.2
Monument_Peak	7110	5127	645	1133	6905	90793	4877	2934	98604	52715	4.9	7.6	9.3
Graz	7839	3235	449	2391	6075	66084	3127	12253	81464	41171	2.7	4.8	5.1
Wettzell	8834	3156	461	2203	5820	27712	2827	8171	38710	23695	7.0	8.5	12.0
Shanghai_2	7821	2510	549	2582	5641	22390	6043	10682	39115	30421	10.0	10.5	8.5
Potsdam_3	7841	4109	454	647	5210	70617	4331	3043	77991	42272	6.7	12.1	12.3
Wettzell_SOSW	7827	1534	351	2003	3888	15548	1893	5765	23206	12413	6.5	9.4	9.6
Hartebeesthoek	7501	2274	616	780	3670	32587	4495	3374	40456	29595	3.5	8.4	10.2
Beijing	7249	1843	366	1414	3623	15331	2545	5090	22966	16044	13.3	15.0	21.6
Kunming	7819	1813	308	1065	3186	25316	1475	3070	29861	15562	7.3	12.9	12.0
Altay	1879	244	345	2554	3143	4320	1973	9316	15609	7391			32.5
Haleakala	7119	2262	468	1	2731	35115	3604	3	38722	27134	2.7	6.6	7.9
Arequipa	7403	2479	113		2592	29218	615		29833	18199	6.0	7.1
Simeiz	1873	1949	304	203	2456	22642	1933	951	25526	16342	21.1	11.3	14.3
Komsomolsk	1868	119	223	1988	2330	2036	1292	7304	10632	4630			31.6
Badary	1890	2036	129	90	2255	19300	635	301	20236	11212		27.8	27.8
Katzively	1893	1812	248	58	2118	19237	1916	329	21482	15469	27.0	10.3	9.9
Brasilia	7407	567	396	1099	2062	2085	1390	3915	7390	5363	37.5		32.8
Simosato	7838	1376	386	8	1770	21745	6152	28	27925	33104	4.1	6.9	11.1
Irkutsk	1891	1013	198	556	1767	9129	1621	1206	11956	9290	11.9	29.9	35.8
Papeete	7124	1030	184	437	1651	17665	1640	2212	21517	13061	6.9	8.5	9.8
Baikonur	1887	98	387	982	1467	607	1619	3629	5855	5419			31.2
Zelenchukskya	1889	739	170	310	1219	7457	1222	864	9543	7974		26.7	36.6
Arkhyz	1886	420	170	383	973	3282	769	1220	5271	4257		34.4	33.1
Riga	1884	732	55	19	806	13028	423	79	13530	6270	12.5	18.4	18.0
Grasse_MEO	7845	338	345	24	707	7977	4291	781	13049	18204	9.1		14.6
Borowiec	7811	518	129	4	651	8693	1352	22	10067	8130	11.3	17.9	15.3
Mendeleevo	1874	147	63	278	488	2690	995	871	4556	3859	-0.1		34.1
Kiev	1824	352	33		385	2404	180		2584	2119	11.4	27.1	26.9
McDonald	7080	314	42	1	357	2468	260	2	2730	2281	7.2	9.4	13.6
Sejong	7394	303	45	1	349	4350	461	5	4816	3912	4.0	8.7	10.9
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	352	1283	258	30.0
Matera_MLRO	7941	19	42	10	36.7

 

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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	2.9	12.1	1.4	100.0	1.6	5.4	1.1	100.0	2.1	15.6	2.4	99.7	2.0	13.2	2.7	99.1	1.8	11.8	1.0	93.0
Changchun	7237	3.9	16.0	3.4	100.0	2.5	16.1	5.4	100.0	2.0	21.6	10.9	99.0	3.8	19.3	6.9	98.9	2.7	33.2	20.4	87.9
Mount_Stromlo_2	7825	3.4	15.6	6.7	100.0	2.6	6.7	5.2	100.0	2.2	19.0	9.1	100.0	3.2	12.8	5.7	98.0	2.0	11.5	2.0	95.0
Zimmerwald_532	7810	3.0	10.5	5.2	100.0	2.3	6.8	3.1	100.0	2.2	20.2	7.2	99.3	3.2	12.5	3.9	96.6	2.1	13.8	3.2	93.6
Herstmonceux	7840	1.9	10.1	2.1	100.0	1.0	6.1	1.6	100.0	1.3	11.8	3.1	100.0	1.7	7.5	2.5	99.4	0.9	10.4	2.2	96.4
Matera_MLRO	7941	2.3	9.1	4.5	100.0	1.2	7.4	2.9	100.0	1.4	15.8	4.8	99.6	1.6	15.9	4.0	99.7	1.7	12.8	5.6	97.0
Greenbelt	7105	2.8	10.0	3.0	100.0	1.5	7.4	2.0	100.0	1.9	13.5	3.5	99.8	2.1	13.0	3.6	99.2	1.9	10.6	3.3	89.8
Monument_Peak	7110	3.8	15.7	7.0	100.0	2.0	6.6	5.4	100.0	2.5	16.8	9.0	99.6	2.1	14.2	3.3	97.4	1.4	16.9	4.7	90.3
Graz	7839	1.9	7.9	3.4	100.0	1.4	5.9	2.1	100.0					2.2	3.8	3.2	98.3	1.3	9.4	3.8	97.7
Wettzell	8834	3.8	14.3	6.2	100.0	2.9	7.7	4.6	100.0	1.8	17.7	9.3	100.0	2.5	7.8	3.2	99.3	2.1	16.7	5.6	91.0
Shanghai_2	7821	3.6	15.3	7.0	100.0	1.5	12.9	6.4	100.0	1.8	21.4	12.1	99.6	2.4	23.6	8.4	99.7	1.9	19.0	5.3	93.9
Potsdam_3	7841	2.1	8.5	5.0	100.0	1.3	7.7	3.5	100.0	1.3	12.5	4.3	100.0	1.9	9.5	5.2	98.7	1.0	12.5	4.6	95.7
Wettzell_SOSW	7827	2.3	11.4	4.1	100.0	1.7	7.2	4.8	100.0	1.2	18.3	9.6	98.1	1.4	13.3	6.3	94.2	0.5	10.5		95.5
Hartebeesthoek	7501	2.8	8.5	8.9	100.0					1.8	22.4	9.5	100.0
Beijing	7249	9.0	14.7	4.8	94.5	12.9	20.5	6.9	100.0	4.4	23.4	7.9	85.4	8.2	20.3	8.4	95.0	5.2	19.1	11.1	88.9
Kunming	7819	5.4	16.7	26.2	99.0	4.3	15.4		100.0	3.2	25.8	16.9	97.1	4.4	24.2		98.8	2.6	19.6		97.6
Altay	1879	4.5	14.1	8.8	100.0	2.6	15.1	16.3	100.0	2.2	23.0	18.5	100.0	2.6	18.3	8.6	100.0	1.5	22.1	8.6	96.2
Haleakala	7119	5.1	20.9	9.8	99.7	2.6	7.1	2.9	100.0	3.5	20.6	2.5	98.4	4.1	21.1	4.4	99.3	3.8	16.1	9.6	92.1
Simeiz	1873	22.1	36.5	16.5	89.2	23.6	33.2	26.3	100.0	4.7	37.7	16.4	56.7	19.4	31.1	12.1	89.4
Komsomolsk	1868	6.7	15.5	16.9	97.1	5.0	22.6	22.7	100.0	4.2	24.4	35.8	94.5	5.0	27.6	19.4	97.7	3.6	20.1	10.0	93.7
Badary	1890	7.1	11.0	9.2	100.0	6.2	14.0	9.3	100.0	4.4	19.7		94.8	6.3	17.1	12.5	97.7	4.1	17.2	17.7	96.8
Katzively	1893	13.2	13.5	8.8	98.9	9.5	16.4	13.2	100.0	5.8	24.7	12.5	82.8	9.9	25.1	9.9	91.9	8.0	15.5	13.9	91.5
Simosato	7838	5.2	13.8	11.9	100.0	2.7	10.5	13.9	100.0	3.8	16.0	14.9	98.5	4.1	12.8	5.8	99.8	4.6	16.1	10.5	95.2
Irkutsk	1891	8.4	14.6	6.6	99.4	7.8	15.6	8.2	100.0	4.2	24.4	6.5	89.2	7.3	13.5	10.9	93.9
Papeete	7124	3.9	20.7	9.8	100.0	2.8	6.2	5.4	100.0	2.8	17.5	6.1	99.4	3.3	24.7	8.9	100.0
Baikonur	1887					5.5	16.5	19.6	100.0					6.7	16.8	9.6	97.9	4.8	24.8	15.4	96.9
Zelenchukskya	1889	6.9	8.5	10.9	100.0	6.5	12.7	9.7	100.0	4.6	19.8	13.5	94.9	8.3	18.0	11.6	100.0	6.5	13.3	8.8	92.8
Arkhyz	1886					6.4	21.0	11.4	100.0
Riga	1884	13.7	11.0	23.7	100.0	7.6	20.7	23.8	100.0	6.1	31.6	26.6	78.1	11.1	25.3	31.1	92.6
Grasse_MEO	7845	3.7	8.3	3.8	100.0	2.6	10.2	9.9	100.0	2.7	22.2	7.9	99.8	2.9	9.6	6.0	96.8	4.2	11.0	6.1	95.0
Borowiec	7811	5.0	9.2	14.4	99.9	4.1	8.3	10.8	100.0	3.6	12.1	18.8	98.3	4.2	8.9	9.3	98.7	3.8	13.4	12.1	93.2
McDonald	7080	5.2	9.2	9.2	99.2	5.8	11.5	5.6	100.0	3.3	12.1	14.8	97.1	3.2	9.5	14.2	91.0
Svetloe	1888	7.0	9.8		100.0	6.5	9.3		100.0