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卫星激光测距的新进展

已有 747 次阅读 2018-6-9 09:07 |个人分类:卫星与激光|系统分类:科研笔记

 2018年第一季度观测情况:

https://ilrs.cddis.eosdis.nasa.gov/network/system_performance/global_report_cards/perf_2018q1_wLLR.html

        从表1可以看出,每个激光测距站的基本观测圈(卫星的一次通过)数比以前的1800大幅度提高了。应该是和激光器的发展有关。随着半导体激光器的普及,千赫兹频率的激光脉冲用于卫星激光测距观测,使得采集数据的效率大大提高。此表中,我国的四个站是长春、北京、上海、昆明(年初实现了月球激光测距)。

    下表来自ILRS,在开头的链接之中可见。

--------------------------------------------------------------------------------------------

                                            Table 1

Site InformationData VolumeData Quality
Column 1234567891011121314
LocationStation
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
Baseline2300 600 3000 3500
Yarragadee7090159972775106522942428703025798413153541431958913.04.64.7
Changchun72379446107456851620583408693816193106539562677.07.89.6
Mount_Stromlo_27825677413054213122921000031084315107125953849563.34.67.5
Zimmerwald_53278105992940304099721021411274399521248368462111.011.714.6
Herstmonceux78404263695344484025884881601071777725498853.49.212.3
Matera_MLRO794141871527262883424986612972119537479165286 .92.83.1
Greenbelt71055754931938762311168793953937125019740112.16.59.2
Monument_Peak7110512764511336905907934877293498604527154.97.69.3
Graz78393235449239160756608431271225381464411712.74.85.1
Wettzell8834315646122035820277122827817138710236957.08.512.0
Shanghai_2782125105492582564122390604310682391153042110.010.58.5
Potsdam_3784141094546475210706174331304377991422726.712.112.3
Wettzell_SOSW7827153435120033888155481893576523206124136.59.49.6
Hartebeesthoek750122746167803670325874495337440456295953.58.410.2
Beijing72491843366141436231533125455090229661604413.315.021.6
Kunming7819181330810653186253161475307029861155627.312.912.0
Altay187924434525543143432019739316156097391

32.5
Haleakala7119226246812731351153604338722271342.76.67.9
Arequipa74032479113
259229218615
29833181996.07.1
Simeiz187319493042032456226421933951255261634221.111.314.3
Komsomolsk186811922319882330203612927304106324630

31.6
Badary18902036129902255193006353012023611212
27.827.8
Katzively18931812248582118192371916329214821546927.010.39.9
Brasilia7407567396109920622085139039157390536337.5
32.8
Simosato78381376386817702174561522827925331044.16.911.1
Irkutsk18911013198556176791291621120611956929011.929.935.8
Papeete712410301844371651176651640221221517130616.98.59.8
Baikonur18879838798214676071619362958555419

31.2
Zelenchukskya188973917031012197457122286495437974
26.736.6
Arkhyz18864201703839733282769122052714257
34.433.1
Riga18847325519806130284237913530627012.518.418.0
Grasse_MEO7845338345247077977429178113049182049.1
14.6
Borowiec78115181294651869313522210067813011.317.915.3
Mendeleevo187414763278488269099587145563859-0.1
34.1
Kiev182435233
3852404180
2584211911.427.126.9
McDonald708031442135724682602273022817.29.413.6
Sejong739430345134943504615481639124.08.710.9
Svetloe188868127174115747265



表1中各栏的含义:1-2:分别为站名、站号,3-5:过去12个月的低轨卫星、地球动力学卫星和高轨卫星的圈数;6:12个月的总圈数、7-9过去12个月的低轨卫星、地球动力学卫星和高轨卫星的正则点数。

-----------------------------------------------------------------------------------

  • 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.        

 

---------------------------------

    历届国际激光测距会议:

Proceedings from the ILRS Workshops

The ILRS sponsors International Workshops on Laser Ranging    typically held every two years. Below is a list of past workshops with hyperlinks to preceedings where available. Links in the "Number" column provide a listing of papers presented; links in the "Location" column point to dedicated workshop websites where available.

NumberYearLocation
1st1973Lagonissi, Greece
2nd1975Prague, Czechoslovakia
3rd1978Lagonissi, Greece
4th1981Austin, TX, USA
5th1984Herstmonceux, UK
6th1986Antibes, France
7th1989Matera, Italy
8th1992Annapolis, MD, USA
9th1994Canberra, Australia
10th1996Shanghai, China
11th1998Deggendorf, Germany
12th2000Matera, Italy
13th2002Washington, D.C., USA
14th2004San Fernando, Spain
15th2006Canberra, Australia
16th2008Poznan, Poland
17th2011Bad Koetzting, Germany
18th2013Fujiyoshida, Japan
19th2014Annapolis, MD, USA
20th2016Potsdam, Germany
21st2018Canberra, Australia




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