International Laser Ranging Service

SLR Global Performance Report Card

February 1, 2017 through January 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	15881	2791	10483	29155	290067	26399	40217	356683	197195	2.8	5.0	4.9
Changchun	7237	9387	1024	6088	16499	79143	6328	17094	102565	52491	6.5	7.8	9.8
Mount_Stromlo_2	7825	6709	1301	4087	12097	99121	10716	14247	124084	83029	3.3	4.6	7.5
Zimmerwald_532	7810	6919	1071	3643	11633	120974	15539	12087	148600	101314	9.3	10.1	13.2
Matera_MLRO	7941	4253	1624	2823	8700	50505	14083	12814	77402	69559	.9	2.6	3.4
Herstmonceux	7840	4072	696	3296	8064	55927	7983	10255	74165	48314	3.4	9.1	12.7
Greenbelt	7105	5706	930	964	7600	110638	9269	4150	124057	73164	2.0	5.9	8.9
Graz	7839	3611	508	2662	6781	74225	3658	13609	91492	46180	2.5	4.1	5.0
Wettzell	8834	3586	524	2461	6571	31842	3252	9130	44224	27075	6.8	8.4	11.8
Monument_Peak	7110	4819	627	1113	6559	85092	4836	2915	92843	50322	5.2	7.9	10.2
Shanghai_2	7821	2287	496	2461	5244	19981	5392	9765	35138	27057	8.4	10.6	7.8
Potsdam_3	7841	4039	394	563	4996	69803	3659	2806	76268	39786	7.0	11.2	12.1
Hartebeesthoek	7501	2618	746	826	4190	38049	5687	3624	47360	35887	5.1	13.0	14.1
Wettzell_SOSW	7827	1482	340	2081	3903	13062	1934	6049	21045	11590	6.4	8.9	9.5
Beijing	7249	1698	279	1367	3344	14591	1836	4895	21322	13365	15.3	17.1	22.5
Altay	1879	284	283	2523	3090	4316	1663	10143	16122	6963			31.8
Haleakala	7119	2481	534	1	3016	38476	4240	3	42719	30616	2.6	5.8	8.7
Badary	1890	2604	179	150	2933	27025	882	527	28434	14345		28.3	27.8
Kunming	7819	1603	251	758	2612	22342	1183	2174	25699	12904	5.8	14.0	12.3
Arequipa	7403	2437	113		2550	28807	615		29422	18026	6.5	7.9	7.7
Simeiz	1873	1907	261	184	2352	21949	1677	894	24520	15523	24.2	11.6	13.4
Katzively	1893	1892	218	85	2195	19882	1640	485	22007	15007	26.4	9.6	9.9
Komsomolsk	1868	148	151	1846	2145	2306	854	6626	9786	3626			34.3
Brasilia	7407	555	395	1094	2044	1896	1374	3888	7158	5255	34.3	22.6	29.3
Simosato	7838	1546	413	18	1977	24770	6709	75	31554	36701	4.2	6.9	10.5
Papeete	7124	1173	211	481	1865	19888	1841	2300	24029	14680	6.4	8.3	9.9
Baikonur	1887	109	311	1139	1559	661	1234	4392	6287	4277			32.0
Irkutsk	1891	807	185	493	1485	7602	1493	1087	10182	8557	-0.1	29.9	34.4
Zelenchukskya	1889	838	165	304	1307	8657	1147	887	10691	8228		23.1	35.5
Arkhyz	1886	471	148	463	1082	3663	608	1529	5800	4006		37.6	34.9
Grasse_MEO	7845	442	366	9	817	10342	4419	733	15494	19549	8.3	14.1	14.4
Riga	1884	718	37	20	775	13191	277	82	13550	5791	9.6		16.8
Mendeleevo	1874	187	67	314	568	3543	983	1032	5558	4251	-0.1	37.7	33.9
Borowiec	7811	440	74	2	516	7752	779	8	8539	5921	11.3	15.0	15.4
Sejong	7394	436	48	2	486	5629	458	10	6097	4831	4.1	8.0	11.0
Kiev	1824	386	20		406	2605	98		2703	1965	11.2	22.0	28.8
McDonald	7080	347	41	2	390	2618	200	5	2823	2208	8.4	16.1	15.2
Svetloe	1888	149	4	7	160	1517	12	25	1554	518

 

 

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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	345	1265	255	29.5
Matera_MLRO	7941	14	32	3	40.2

 

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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	11.7	1.5	100.0	1.7	6.1	1.0	100.0	2.1	16.5	3.7	99.9	2.0	13.8	2.6	98.9	1.6	11.1	1.3	91.4
Changchun	7237	3.2	15.8	3.7	100.0	2.2	16.9	5.6	100.0	1.7	21.0	11.2	98.0	2.7	19.1	8.1	99.6	2.6	34.8	17.2	89.9
Mount_Stromlo_2	7825	3.2	16.7	6.1	100.0	2.5	6.7	5.3	100.0	1.9	16.3	9.1	99.4	2.9	13.6	5.3	98.2	1.7	10.7	2.0	94.8
Zimmerwald_532	7810	2.9	10.1	6.0	100.0	1.8	6.5	3.6	100.0	2.4	17.6	8.0	100.0	3.1	12.8	3.9	96.5	2.0	10.8	3.1	93.9
Matera_MLRO	7941	2.0	10.3	4.9	100.0	1.1	6.3	3.0	100.0	1.4	15.7	5.4	98.6	1.5	11.2	3.7	100.0	1.1	17.6	5.1	96.3
Herstmonceux	7840	1.9	9.8	2.0	100.0	1.0	6.7	1.5	100.0	1.4	14.5	3.5	100.0	1.6	9.6	2.5	99.2	1.5	11.8	1.9	95.9
Greenbelt	7105	2.9	11.3	5.0	100.0	1.6	6.2	3.7	100.0	2.2	15.2	3.8	99.4	2.0	13.5	3.7	98.7	1.7	10.4	4.0	89.4
Graz	7839	1.8	10.2	4.2	100.0	1.3	6.6	2.4	100.0	1.3	9.0	7.4	100.0	1.6	10.0	3.5	98.0	1.1	8.9	3.8	96.4
Wettzell	8834	2.7	12.0	9.3	100.0	1.9	7.5	6.7	100.0	1.2	15.3	9.6	100.0	2.1	8.5	3.9	99.1	1.2	14.2	7.5	92.9
Monument_Peak	7110	3.8	22.1	6.4	99.9	2.0	8.4	5.9	100.0	2.4	21.1	10.6	99.5	2.5	18.2	3.3	98.4	2.1	14.1	4.8	90.2
Shanghai_2	7821	3.3	17.1	6.6	100.0	1.4	14.1	5.9	100.0	1.5	19.7	11.9	100.0	2.0	20.4	8.1	99.8	1.3	22.0	4.9	95.7
Potsdam_3	7841	2.2	10.7	5.6	100.0	1.5	7.7	3.6	100.0	1.5	16.8	4.5	100.0	1.4	10.9	5.1	98.1	1.5	10.7	3.5	94.8
Hartebeesthoek	7501	4.1	13.7	9.0	99.2	3.0	7.4	4.1	100.0	1.5	18.4	8.6	98.3	6.3	18.9	7.7	97.4
Wettzell_SOSW	7827	2.5	10.0	3.7	100.0	1.9	7.7	4.3	100.0	1.5	19.1	9.9	95.5	1.9	11.8	6.6	98.9	0.9	10.1		96.2
Beijing	7249	8.5	15.5	11.6	93.7	20.9	27.2	10.3	100.0	4.8	23.1	12.2	85.7	7.6	19.6	12.2	92.8	6.5	23.5	12.4	87.7
Altay	1879	4.9	16.3	10.3	100.0	3.2	17.9	14.6	100.0	2.5	22.0	16.0	96.4	3.4	28.7	12.7	99.3	2.6	21.9	8.5	94.0
Haleakala	7119	5.0	27.0	9.6	99.5	2.6	7.8	3.3	100.0	2.7	18.4	2.8	97.8	4.1	19.7	4.7	99.1	3.4	20.5	6.7	91.5
Badary	1890	6.2	10.4	10.3	100.0	5.7	11.9	15.0	100.0	4.1	18.9		96.8	6.0	17.9	11.4	99.6	4.2	18.5	19.3	95.4
Kunming	7819	6.6	17.8	30.7	98.5	7.1	18.1		100.0	3.8	22.9		94.7	5.1	25.5		97.3	3.5	22.5		95.0
Simeiz	1873	23.0	42.8	27.3	91.0	24.7	40.7	31.7	100.0	4.9	37.4	22.2	57.0	19.1	38.7	22.2	92.4
Katzively	1893	13.0	15.0	15.5	99.1	9.5	16.1	14.8	100.0	5.6	24.3	15.7	81.4	9.3	26.1	10.1	87.4	9.4	18.8	18.0	94.5
Komsomolsk	1868	7.7	21.5	24.5	100.0	5.8	25.1	24.9	100.0	4.3	33.6	35.8	96.1	5.6	37.3	18.6	96.9	3.2	25.8	10.0	88.5
Brasilia	7407	5.6	24.2	17.0	100.0	6.2	12.8	6.0	100.0	3.6	21.5	18.7	93.1	7.0	12.7	12.8	100.0
Simosato	7838	5.1	14.1	17.1	100.0	2.8	9.4	18.7	100.0	3.6	17.5	19.5	98.3	4.4	15.3	5.6	99.8	4.6	16.2	12.4	95.8
Papeete	7124	4.3	18.3	9.5	100.0	3.0	9.1	6.2	100.0	2.9	20.6	5.9	98.9	3.8	19.3	8.9	98.8
Baikonur	1887	4.4	11.2	11.9	100.0	3.6	11.6	17.8	100.0	2.9	27.6	12.9	99.4	5.3	18.6	9.4	99.2	2.3	27.5	13.8	99.1
Irkutsk	1891	5.3	17.2	6.6	100.0	4.3	14.8	8.3	100.0	3.4	21.1	4.8	98.2	4.6	12.0	11.7	100.0	3.8	12.1		92.5
Zelenchukskya	1889	7.5	12.8	12.2	100.0	6.1	12.2	10.4	100.0	5.1	19.8	24.6	96.0	5.9	18.3	12.6	94.8	5.4	17.6	6.2	93.5
Arkhyz	1886	12.5	27.0	15.8	100.0	6.3	28.5	11.9	100.0					6.5	10.2	13.6	91.5	5.9	18.9	16.2	92.9
Grasse_MEO	7845	4.0	12.5	5.8	100.0	2.6	10.5	10.6	100.0	2.6	19.4	8.7	98.4	3.2	13.2	5.9	95.7	2.8	14.3	7.2	94.3
Borowiec	7811	4.4	16.8	17.9	100.0	3.6	14.0	15.5	100.0	3.3	19.6	22.2	99.3	3.3	16.0	10.0	99.6
Sejong	7394	2.2	7.4	23.1	100.0	1.5	9.6	15.6	100.0	1.2	18.1		100.0	2.2	9.2	28.2	100.0
McDonald	7080	5.8	10.9	10.2	99.0	7.9	11.1	5.9	100.0	4.1	18.5	17.2	94.3