International Laser Ranging Service

SLR Global Performance Report Card

June 1, 2017 through May 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	15978	2697	10382	29057	278327	24338	40122	342787	190559	3.2	4.7	4.9
Changchun	7237	8972	1000	5305	15277	82386	6651	15397	104434	54431	5.5	8.6	10.2
Mount_Stromlo_2	7825	6797	1265	4274	12336	98440	10234	14969	123643	83049	3.2	4.6	7.1
Zimmerwald_532	7810	5647	897	2702	9246	93178	11463	8455	113096	77530	6.0	9.1	11.9
Herstmonceux	7840	4455	707	3411	8573	62912	8318	10666	81896	51808	3.4	9.3	13.2
Matera_MLRO	7941	4334	1498	2556	8388	51391	12597	11742	75730	64960	.9	2.6	3.0
Greenbelt	7105	6216	959	953	8128	120246	9878	3990	134114	79627	2.1	6.7	9.1
Monument_Peak	7110	5272	669	1148	7089	94097	5086	3002	102185	54935	4.7	7.7	10.5
Wettzell	8834	3474	500	2505	6479	31587	3007	9563	44157	26662	7.4	8.7	11.8
Graz	7839	3282	454	2210	5946	67122	3071	11478	81671	41463	2.2	5.9	5.2
Potsdam_3	7841	4407	546	693	5646	75628	5066	3224	83918	46013	6.8	10.8	12.6
Shanghai_2	7821	2385	546	2538	5469	21208	5933	10830	37971	29756	8.6	9.3	8.6
Kunming	7819	2397	409	1835	4641	32269	1877	5021	39167	19921	6.1	12.3	12.1
Wettzell_SOSW	7827	1625	367	2179	4171	18407	1845	6413	26665	13408	7.5	10.3	11.2
Hartebeesthoek_HARL	7501	2237	590	729	3556	31368	4175	3329	38872	27751	3.7	10.7	10.4
Beijing	7249	1780	375	1299	3454	14845	2601	4730	22176	16069	11.0	14.4	21.5
Arequipa	7403	2863	139		3002	33763	729		34492	20482	6.1	8.1	8.6
Altay	1879	212	335	2385	2932	3942	1907	8466	14315	6945			33.9
Simeiz	1873	2027	337	292	2656	23532	2023	1331	26886	16552	23.1	10.8	12.6
Haleakala	7119	2047	419	1	2467	31793	3175	3	34971	24152	3.1	6.7	9.5
Komsomolsk	1868	115	240	2059	2414	1971	1395	7618	10984	4914			30.7
Katzively	1893	2012	283	46	2341	22412	2164	269	24845	17447	26.9	10.1	11.0
Badary	1890	1956	145	118	2219	18497	727	382	19606	11301		29.2	28.0
Irkutsk	1891	1177	250	715	2142	10209	2119	1506	13834	11460	34.9	30.2	34.1
Simosato	7838	1369	398	5	1772	21448	6287	25	27760	33327	3.6	8.0	15.8
Brasilia	7407	468	347	911	1726	1848	1235	3211	6294	4747	36.2	21.8	31.5
Zelenchukskya	1889	861	195	400	1456	8555	1449	1099	11103	9274		23.4	37.5
Baikonur	1887	68	407	935	1410	433	1731	3405	5569	5613			31.8
Papeete	7124	849	148	299	1296	13952	1382	1472	16806	10468	7.0	8.9	10.1
Riga	1884	860	88	24	972	15301	701	116	16118	7381	9.6	15.5	15.9
Arkhyz	1886	399	191	361	951	3204	914	1149	5267	4635		35.6	34.2
Borowiec	7811	696	171	19	886	12052	1699	80	13831	10210	12.6	20.5	17.3
Hartebeesthoek_HRTL	7503	430	155	286	871	4748	720	842	6310	3895	34.2	26.2	31.1
Grasse_MEO	7845	212	290	65	567	5091	3799	938	9828	15358	8.7		14.5
Mendeleevo	1874	127	86	290	503	2486	1354	862	4702	5000	-0.0	22.3	26.1
Kiev	1824	360	39		399	2683	207		2890	2245	12.4	24.4	26.6
Sejong	7394	306	47	1	354	4588	484	5	5077	4041	3.9	9.1	12.0
McDonald	7080	241	41	1	283	2014	274	2	2290	2029	8.8	11.0	11.3

 

 

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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	190	676	154	28.4
Matera_MLRO	7941	20	43	7	41.4

 

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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	2.6	11.3	1.4	100.0	1.6	5.7	0.8	100.0	1.8	13.6	2.0	99.4	2.1	14.7	2.9	99.4	1.4	8.9	1.1	91.7
Changchun	7237	3.3	14.6	3.7	100.0	2.4	14.1	4.4	100.0	1.9	17.5	3.3	99.5	4.3	14.9	7.3	98.4	1.6	33.8	21.2	93.9
Mount_Stromlo_2	7825	3.2	15.9	6.0	100.0	2.4	6.0	2.8	100.0	2.2	15.0	5.7	100.0	2.9	15.3	6.1	96.5	1.9	9.6	3.2	96.3
Zimmerwald_532	7810	2.9	11.0	4.6	100.0	1.4	6.1	2.6	100.0	1.5	13.8	5.5	99.7	2.2	10.0	3.8	97.6	1.5	8.9	3.4	94.7
Herstmonceux	7840	2.0	8.3	1.6	100.0	1.1	5.7	1.6	100.0	1.1	11.4	2.8	99.0	1.7	13.1	2.6	99.1	1.1	7.8	2.1	96.8
Matera_MLRO	7941	2.3	8.4	4.2	100.0	1.1	7.0	2.5	100.0	1.2	13.3	4.4	99.6	1.6	13.2	4.0	99.9	0.9	13.1	5.9	96.1
Greenbelt	7105	2.6	8.3	2.9	100.0	1.8	6.4	1.3	100.0	2.2	10.8	2.1	99.6	2.1	14.0	3.2	98.4	1.9	11.1	3.5	93.6
Monument_Peak	7110	4.0	13.1	6.4	100.0	2.6	8.1	2.4	100.0	2.7	12.6	3.4	98.1	2.5	15.1	3.6	96.4	1.7	17.1	4.7	88.5
Wettzell	8834					2.1	5.8	1.9	100.0	1.7	14.4	5.8	99.2	2.1	11.1	2.8	97.4
Graz	7839	2.4	8.2	3.0	100.0	1.2	5.4	2.0	100.0	1.0	9.1	6.7	97.3	2.5	7.6	3.2	95.8	0.6	10.5	3.4	95.5
Potsdam_3	7841	2.0	7.5	4.4	100.0	1.5	6.7	3.5	100.0	1.2	13.3	4.0	100.0	2.0	9.3	5.0	98.0	1.1	14.4	4.3	96.6
Shanghai_2	7821	3.0	15.3	7.6	100.0	1.5	11.8	6.8	100.0	1.4	19.6	12.0	99.3	2.1	24.4	7.8	99.3	1.0	17.3	5.8	94.3
Kunming	7819	4.9	17.2	26.2	100.0	3.5	16.8	8.8	100.0	3.0	26.0	15.0	98.0	4.4	21.8		99.7	2.4	21.1		98.1
Wettzell_SOSW	7827	1.6	10.1	3.7	100.0	1.4	9.0	3.6	100.0	0.8	14.1	9.7	100.0	1.7	13.5	6.1	92.2	0.8	18.6		96.3
Hartebeesthoek_HARL	7501	2.9	8.8	9.8	100.0	1.7	7.0	4.6	100.0	1.9	13.6	9.3	99.1	1.8	19.8	8.9	98.3
Beijing	7249	10.8	18.8	4.9	91.2	16.3	24.9	7.8	100.0	4.2	23.3	8.5	81.3	7.8	26.0	8.3	92.1	6.6	18.9	8.7	84.7
Arequipa	7403					4.1	7.9	4.5	100.0	3.4	12.4	8.4	94.3	7.7	43.1		100.0
Altay	1879	4.1	10.2	6.0	100.0	2.5	17.0	8.7	100.0	2.2	23.5	13.6	100.0	3.4	23.2	8.9	99.2	3.3	20.0	8.6	92.0
Simeiz	1873	20.4	30.3	12.9	90.0	21.5	39.4	14.4	100.0	6.7	39.7	11.1	65.1	17.7	43.5	12.8	93.1
Haleakala	7119	5.2	15.0	10.8	98.7	2.6	7.6	2.2	100.0	2.7	17.2	1.8	97.5	4.2	21.1	5.0	98.4
Komsomolsk	1868	6.1	12.3	12.8	95.2	5.1	20.7	17.3	100.0	4.5	28.2	25.6	96.2	4.5	24.9	16.3	98.0	5.2	15.3	9.1	92.5
Katzively	1893					10.8	19.3	5.6	100.0	6.1	21.2	7.8	81.1	10.0	17.3	9.9	88.6	10.0	14.3	13.3	94.7
Badary	1890					6.4	12.1	8.6	100.0	4.4	18.3	13.5	97.5	4.7	24.7	11.5	98.4
Irkutsk	1891	8.9	14.1	5.6	99.6	8.0	13.6	6.7	100.0	4.4	18.5	6.3	88.7	7.7	13.6	10.1	92.9	6.5	19.0	7.0	95.2
Simosato	7838	5.7	16.1	2.6	100.0	3.9	9.7	3.8	100.0	4.6	14.4	6.2	96.4	5.1	14.5	7.1	99.8	5.9	18.4	5.6	95.6
Brasilia	7407					4.0	24.4	8.9	100.0	2.0	33.3	25.0	88.1	3.9	17.2	13.4	96.0
Zelenchukskya	1889					6.4	13.2	7.3	100.0	5.1	21.5	12.8	95.2	6.5	11.2	11.6	97.7	4.4	21.8	9.1	95.0
Baikonur	1887					5.8	15.2	8.5	100.0	3.3	23.4	17.2	94.7	5.4	12.6	9.3	96.0	4.3	25.9	12.3	96.0
Papeete	7124					3.2	10.9	7.8	100.0	2.7	20.8	16.9	98.8	3.3	24.9	11.8	96.9
Riga	1884	13.9	11.2	25.3	100.0	8.5	31.4	24.9	100.0	5.8	33.2	25.5	75.2	11.4	35.4	31.9	93.3	8.6	20.8		92.2
Arkhyz	1886					6.3	22.0	9.2	100.0	5.3	28.1	18.1	83.3	6.0	28.1	10.3	95.2
Borowiec	7811	4.6	9.9	11.4	100.0	3.3	8.7	9.1	100.0	3.3	14.6	13.7	99.8	4.2	9.8	8.3	100.0	2.1	13.9	11.5	95.1
Hartebeesthoek_HRTL	7503					6.3	18.5		100.0	2.8	19.9		95.0	4.9	16.8		98.4
Grasse_MEO	7845	3.6	7.4	2.6	100.0	3.3	11.7	7.9	100.0	3.0	21.8	6.2	98.5	2.8	8.8	5.2	95.0	2.4	12.0	4.3	95.7
Mendeleevo	1874					3.1	10.5	7.7	100.0	3.9	14.8		98.8	4.3	12.9	8.9	98.7	3.8	13.5		95.0