Establishment and Observation of Space Debris Laser Ranging Zhang Zhongping, Zhang Haifeng, Wu Zhibo, Li Pu, Meng Wendong, Chen Juping, Chen WanZhen Shanghai Observatory, Chinese Academy of Sciences Contents: Introduction Establishment of laser ranging to space debris system Observation results Summary Introduction Large amount of space debris around the earth currently. ... Laser ranging (LR) is a kind of real-time measuring technology with meter or sub-meter precision for space-debris observation. ...

... The total mass of the scientific payload is about 2500 kg, of which the unfolding parabolic 10-m radio astronomy antenna's mass is about 1500 kg, and scientific package holding the receivers, power supply, synthesizers, control units, frequency standards and data transmission radio system - near 900 kg. ... The jet system is a hydrazine thrusters system: it will be used during the creation of the base system of spacecraft orientation, for unloading of the powered gyros, and for orbit corrections. ...

... Meta Index / Home Page This section documents the parameters recognized by this task (if any). ... Default . Constraints . ... Name of the FITS file containing the EPIC source time series. ... Integer . ... In case Nbins =1 (the default value), Nbins is set to the maximum legal value (full resolution spectrum). bkgsub . ... This parameter defines the way in which the error bars on the plotted PDS are calculated. ... Indicate if a polynomial trend has to be removed from the time series. polyorder . ...

... Phys., 45, 409-419 10.02.2010 , . PLHR: o 50 / 60 / 100 / 120 o MLR: o 50 / 60 / 100 / 120 o o , - PorojДrvi 17/11/1993 Total power -5 dB 1,8 -15 1,7 -25 1,6 14.09 14.11 Time(UT) -35 14.13 Frequency (kHz) 4,2 4,1 4,0 07.30 -30 -40 07.45 Time(UT) 07.00 10.02.2010 Frequency (kHz) PorojДrvi 25/01/1993 Total power 4,3 -20 dB , . ... 10.02.2010 , . ... f1 < < fn < fn+ 1 20 ms 128 Frequency (kHz) 1,8 1,8 Frequency (kHz) 4 dB 0 -20 1,7 1,7 1,6 0 10.02.2010 30 Time(sec) 60 1,6 -40 0 0,3 Time(sec) 0,6 , . ...

... North was somewhere years ago and Out of my Book cold: Ice locked the people's hearts and We sat by ourselves, still looking made them old. for company; South was birth to pleasant lands, there could have been peace, but that but dry: eluded me - I walked the waters' depths and all I could think of was what was on played my mind. my mind. ... White. ... And the Black, too, shall bow down to the power above; Black hate beats Grey but surpreme is the White Hammer of Love. ...

... public class CurveFitter . ... static int . ... Field Detail public static final int STRAIGHT_LINE . ... public static final int POLY2 . ... public static final int POLY3 . ... public static final int POLY4 . ... public static final int EXPONENTIAL . ... public static final int POWER . ... public static final int LOG . ... public static final int RODBARD . ... public static final int GAMMA_VARIATE . ... public static final int LOG2 . ... public static double f (int fit, double[] p, double x) . ...

... 2006: . The distributions of radial ages and chemical compositions of the stellar population for several elliptical galaxies were measured from the BTA observations down to the record (to date) distances from the nucleus. ... Photometric distances were measured and peculiar radial velocities were determined for 3000 spiral galaxies from the 2MFGC catalog, compiled at the SAO RAS based on the 2MASS infrared sky survey. ... Archive . ...

... Satellite data ] . SMIS ] . ... the satellite tracking in the whole upper hemisphere using previously calculated satellite coordinates . tracking accuracy: 0,5 degree . ... power supply: single phase, 220 V, 50 Hz . power consumption: less than 800 Wt . weight: less than 250 kg . permissible ambient temperature: -50oC to +50o C . permissible wind speed: work - 22 m/s, limit - 40 m/s. Back to SMIS Home Page . ...

... DIAGNOSTICS OF IONOSPHERIC IRREGULARITY SPECTRUM USING MEASUREMENTS OF RADIO WAVE ANOMALOUS ATTENUATION UNDER VERTICAL SOUNDING . ... The selected experimental data are characterized by a high average level of attenuation of a signal of vertical sounding (10 dB and above), which cannot be caused by collisional absorption of radio waves (practically absent in a dark time of day) and, hence, being a consequence of scattering on random irregularities. ... ATTENUATION OF A VERTICAL SOUNDING SIGNAL . ...

... Observations of GRB afterglows with Russian-Turkish 1.5-m Telescope (RTT150) . ... During the first 5 hours of our observations the afterglow faded exactly as a power law with index -1.19+-0.01 in each of the BVRI Bessel filters. ... We observe no variability above the gradual fading with the upper limits 10-1% on time scales 0.1-1000s. Spectral flux distribution in four BVRI filters corresponds to the power law spectrum with spectral index = 0.66 +- 0.01. ...

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Illuminating Dark Matter? by Neal Weiner . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... The remainder is dark matter and dark energy. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

Альтернативный форум . Scientific.ru Все форумы . ... Januchar . ... Согласно первому утверждению <знание>= P , согласно второму - <деньги>= t . ... Бахарев, 14.11.2005 09:26 . ... Anatoly Rykov, 14.11.2005 10:16 . ... Михалыч, 14.11.2005 09:41 . ... Полное название журнала: "Знание - сила, ума - не надо" :) (-) sleo, 14.11.2005 13:55 . ... Anatoly Rykov, 14.11.2005 11:06 ...бездне - дна :-)) Михалыч, 14.11.2005 11:38 . ... Re: Я признал свою ошибку: div(rot)=0 Anatoly Rykov, 14.11.2005 13:38 . ...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

... at the ISSP RAS. ... MSU student Kostretsova N.B. successfully defended her thesis entitled "Investigation of Thermal and Chemial Expansivity of Ceria-Based Solid Solutions". ... V.A. Kolotygin successfully defended his PhD thesis "Perovskite-Like Oxide and Composite Anode Materials for Solid Oxide Fuel Cells: Functional Properties and Electrochemical Behavior in Contact with Gallate- and Silicate-Based Solid Electrolytes" and was awarded PhD degree in the area of Materials Science and Engineering ....

... Eyepiece Specifications . Aperture Diameter (inches) . user input . Eyepiece focal length . ... Focal Ratio . ... Magnification . ... Focal Length (inches) . Eyepiece Apparent FOV . ... Focal Length . ... True Field of View . ... sq. inches) . ... Enter values for the "user input" blocks - then press the "Calculate" key . Eyepiece Apparent FOV Table - A listing of popular manufacturers eyepieces and their apparent field of view's (FOV). ...