International Laser Ranging Service

SLR Global Performance Report Card

January 1, 2017 through December 31, 2017

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	15674	2775	10116	28565	288703	26492	38707	353902	196148	2.8	5.0	4.9
Changchun	7237	9199	1012	6254	16465	75495	6102	17703	99300	50580	6.0	7.7	10.3
Mount_Stromlo_2	7825	6614	1263	3890	11767	97723	10601	13761	122085	81436	3.3	4.5	7.4
Zimmerwald_532	7810	6590	1024	3424	11038	115396	14929	11380	141705	97086	6.7	9.2	11.6
Matera_MLRO	7941	4213	1636	2814	8663	49847	14260	12788	76895	69857	.8	2.5	3.5
Herstmonceux	7840	4195	736	3331	8262	58321	8314	10434	77069	50146	3.3	9.1	12.9
Graz	7839	3649	529	2762	6940	75227	3880	14009	93116	47162	2.3	3.7	5.1
Greenbelt	7105	5204	837	882	6923	99883	8435	3833	112151	66492	1.9	5.4	8.5
Wettzell	8834	3772	546	2568	6886	33935	3433	9718	47086	28657	6.8	8.6	12.1
Monument_Peak	7110	4659	636	1070	6365	82389	4917	2797	90103	49226	5.2	8.0	10.8
Potsdam_3	7841	4180	414	549	5143	72771	3821	2802	79394	41458	7.0	11.2	12.4
Shanghai_2	7821	2228	469	2428	5125	19250	4904	9585	33739	25132	7.5	9.5	7.4
Hartebeesthoek	7501	2771	779	852	4402	40501	5931	3793	50225	37767	5.6	12.9	14.8
Wettzell_SOSW	7827	1603	346	2250	4199	13648	1970	6765	22383	11776	6.3	8.8	9.1
Haleakala	7119	2595	609	1	3205	40281	4968	3	45252	33616	3.0	6.0	9.4
Beijing	7249	1621	249	1314	3184	13924	1609	4682	20215	12340	15.4	18.4	23.1
Altay	1879	293	280	2543	3116	4026	1645	10053	15724	7057			31.1
Badary	1890	2622	169	143	2934	27851	833	502	29186	14008		29.2	28.1
Arequipa	7403	2387	113		2500	28327	615		28942	17740	6.7	8.1	7.8
Simeiz	1873	1881	245	176	2302	21329	1582	846	23757	15174	25.9	11.0	11.6
Komsomolsk	1868	161	157	1956	2274	2409	889	6986	10284	3895			34.4
Kunming	7819	1373	210	642	2225	18895	971	1822	21688	10848	4.6	14.6	12.6
Brasilia	7407	582	412	1114	2108	1981	1434	3974	7389	5492	32.4	22.5	29.4
Katzively	1893	1806	179	82	2067	19024	1345	470	20839	13659	26.0	8.7	9.9
Simosato	7838	1592	427	25	2044	26064	6984	125	33173	38040	4.2	7.5	11.2
Papeete	7124	1153	215	498	1866	19752	1920	2397	24069	14885	6.2	8.2	9.6
Baikonur	1887	111	318	1162	1591	675	1266	4452	6393	4380			32.1
Irkutsk	1891	769	179	455	1403	7261	1442	1008	9711	8203	-0.1	30.2	34.3
Zelenchukskya	1889	865	177	304	1346	8990	1223	911	11124	8588		23.0	35.5
Arkhyz	1886	520	164	508	1192	3942	672	1705	6319	4404		37.6	35.4
Grasse_MEO	7845	458	372	10	840	10858	4433	736	16027	19717	8.9	13.3	14.4
Riga	1884	694	39	20	753	12775	273	85	13133	5674	7.1		14.9
Mendeleevo	1874	191	72	319	582	3649	1039	1049	5737	4459	-0.1	37.7	33.9
Borowiec	7811	506	70	2	578	9197	736	8	9941	6508	12.8	15.4	14.9
Sejong	7394	503	47	3	553	6455	429	15	6899	5390	4.0	7.9	10.9
Kiev	1824	359	8		367	2369	26		2395	1617	10.8	21.3	14.2
McDonald	7080	303	33	2	338	2164	137	5	2306	1753	8.9	17.5	17.5
Svetloe	1888	187	6	7	200	2042	18	25	2085	698

 

 

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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	342	1229	358	28.5
Matera_MLRO	7941	14	32	10	34.5

 

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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	2.7	11.3	1.4	100.0	1.6	6.7	0.9	100.0	1.9	14.7	3.8	99.8	2.0	17.4	2.9	99.1	1.6	10.6	1.3	91.5
Changchun	7237	3.1	17.2	3.2	99.8	2.6	17.1	5.7	100.0	1.4	20.3	11.4	97.4	2.9	19.2	7.8	98.9	2.2	36.5	17.6	89.9
Mount_Stromlo_2	7825	3.0	16.1	5.7	100.0	2.3	7.2	5.0	100.0	1.8	14.1	8.7	99.4	2.7	15.5	5.0	97.9	1.5	11.6	1.4	94.5
Zimmerwald_532	7810	2.8	10.9	6.1	100.0	1.3	8.6	3.6	100.0	2.3	12.0	8.3	100.0	2.4	13.0	2.7	97.6	2.2	12.3	2.9	94.3
Matera_MLRO	7941	1.9	9.4	5.0	100.0	1.1	6.8	3.2	100.0	1.3	14.7	5.6	99.3	1.4	11.9	2.9	99.8	1.0	17.6	4.2	96.2
Herstmonceux	7840	1.8	9.9	2.1	100.0	1.0	7.0	1.7	100.0	1.3	13.6	3.6	100.0	1.6	8.9	2.4	98.5	1.3	11.3	2.4	96.4
Graz	7839	1.6	9.2	4.2	100.0	1.1	7.1	2.8	100.0	1.0	11.1	5.5	100.0	1.3	12.3	3.8	96.7	0.9	8.0	3.1	95.5
Greenbelt	7105	2.9	11.7	6.9	100.0	1.7	6.6	4.1	100.0	2.2	12.7	3.9	99.3	2.0	14.9	3.8	99.0	2.1	10.2	4.5	91.4
Wettzell	8834	2.5	9.2	10.4	100.0	2.0	7.9	8.3	100.0	1.6	12.7	10.5	100.0	2.1	8.3	4.0	98.8	1.3	10.6	8.2	93.7
Monument_Peak	7110	3.8	18.9	5.1	99.7	2.4	9.7	5.6	100.0	2.3	16.3	11.0	98.8	2.6	13.4	2.9	98.0	2.1	13.9	5.0	90.8
Potsdam_3	7841	2.1	9.5	5.4	100.0	1.5	7.3	4.1	100.0	1.4	13.8	4.6	99.7	1.7	8.1	4.3	98.3	1.2	12.0	4.2	94.4
Shanghai_2	7821	2.7	17.8	6.4	100.0	1.3	15.7	6.0	100.0	1.3	18.0	11.6	99.6	1.8	21.7	8.1	99.8	1.0	19.8	4.9	96.1
Hartebeesthoek	7501	3.6	12.6	8.9	99.8	2.1	7.8	3.2	100.0	2.0	13.0	7.7	97.9	3.0	15.4	7.4	96.8	1.5	12.3	4.5	89.2
Wettzell_SOSW	7827	2.3	6.3	3.7	100.0	1.7	7.2	4.2	100.0	1.1	10.9	8.8	97.7	2.3	10.9	6.4	88.7	0.8	12.6		99.1
Haleakala	7119	4.6	24.1	9.6	99.4	2.7	7.6	4.0	100.0	2.5	18.2	3.0	97.0	4.1	23.6	3.9	98.6	2.8	20.6	6.6	90.5
Beijing	7249	8.7	15.7	13.7	92.9	22.9	28.8	11.9	100.0	5.1	21.7	12.9	86.0	7.8	25.9	14.9	92.0	6.2	22.6	12.1	86.8
Altay	1879	5.0	17.0	10.5	100.0	3.2	19.3	14.5	100.0	2.5	20.5	15.5	96.1	3.7	30.1	12.3	98.7	2.5	21.0	10.1	93.8
Badary	1890	6.5	9.1	10.3	100.0	5.9	10.6	14.9	100.0	4.1	19.3		97.5	5.7	17.0	11.6	99.4	4.1	19.1	18.8	95.0
Arequipa	7403	4.3	11.3	15.8	97.7	2.4	8.8	21.8	100.0	3.2	13.2	19.1	96.6	4.5	52.4	22.9	97.1
Simeiz	1873	21.8	41.2	23.1	94.9	20.8	37.9	30.3	100.0	4.9	35.9	19.3	63.8	20.2	44.6	28.8	95.0
Komsomolsk	1868	8.0	20.7	25.3	100.0	6.2	25.3	23.8	100.0	4.4	30.0		94.2	5.4	38.0	12.9	95.7	3.5	24.5		88.0
Kunming	7819	6.5	18.3	32.8	93.4	8.0	20.0		100.0	4.2	23.4		89.9	5.5	27.0		96.9	3.7	23.2		95.0
Brasilia	7407	5.0	24.0	16.2	100.0	4.6	17.4	6.0	100.0	2.7	37.2	17.6	91.1	5.4	13.8	10.5	96.4	4.4	25.8		99.2
Katzively	1893	12.6	15.1	15.6	99.0	10.1	16.3	14.8	100.0	6.2	19.5	16.1	79.2	9.3	11.8	8.8	90.6	9.9	15.0	17.6	95.4
Simosato	7838	5.1	13.7	17.6	100.0	2.8	8.3	19.2	100.0	3.9	15.8	20.1	98.1	4.4	18.8	5.9	100.0	5.2	16.9	12.4	95.8
Papeete	7124	4.3	14.6	5.4	100.0	2.7	9.6	5.9	100.0	2.9	15.4	4.9	99.2	3.6	25.2	7.5	99.2	4.8	18.4	6.4	97.6
Baikonur	1887	4.5	12.0	11.9	100.0	3.5	12.3	17.9	100.0	2.9	28.7	14.4	99.6	5.2	18.7	9.1	100.0	2.0	25.7	15.6	99.4
Irkutsk	1891	5.0	15.8	7.0	100.0	3.5	14.8	8.7	100.0	2.9	18.6	5.0	97.6	4.1	12.8	10.3	99.6	4.1	13.0		92.9
Zelenchukskya	1889	7.4	12.9	12.1	100.0	6.1	11.6	10.1	100.0	5.0	20.8	24.6	95.9	6.1	17.4	8.3	94.6	5.5	18.2	5.2	91.8
Arkhyz	1886	13.2	28.1	18.1	100.0	7.4	29.3	15.5	100.0	5.7	31.9	16.7	82.8	6.4	8.6	13.0	92.6	7.2	18.2	18.8	93.1
Grasse_MEO	7845	3.7	12.3	6.2	100.0	2.4	13.0	10.5	100.0	2.5	17.4	8.6	98.6	3.0	12.0	5.9	97.1	2.7	14.2	5.5	95.5
Borowiec	7811	4.7	16.1	18.7	100.0	3.3	12.4	18.2	100.0	3.5	16.4	22.4	99.1
Sejong	7394	1.8	6.8	23.1	100.0	1.4	9.3	16.6	100.0	1.0	13.3		100.0
McDonald	7080	6.3	12.2	10.6	98.3	5.3	10.9	6.2	100.0	3.5	23.4	18.0	87.9