Azimuth swings were done with the cband receiver on 13jan16. ... clear weather, data taken in the afternoon . ... For dynamic spectra . compute median band pass, divide this into all spectra . find rfi free section of band, compute median value for each spectra and then divide each spectra by these values . ... 4950 Mhz band azswing (.gif) . ... You can see that lots of the 20 Mhz rfi's overlap each other in frequency. ... The 15jan16 data was at a fixed azimuth, so not all rfi's peaked up.. ...

ATNF Home . ... About ATNF overview . News | ... Australia Telescope Steering Committee . ... Parkes radio telescope . Australia Telescope Compact Array . ... developed for the ASKAP Mk II PAF, . ... While commissioning activities continue apace with the Boolardy Engineering Test Array (BETA) at the Murchison Radio-astronomy Observatory (MRO) in Western Australia, the ASKAP team is also busily preparing the site for ground aperture array tests of the second generation ASKAP receiver . ...

Communications between DF-224 and NSSC-I is via PITs (Processor Interface Tables) . ... SSM PIT tells NSSC-I about DF-224 and spacecraft . ... Maneuver request accepted . Maneuver information . Guide star information . SIC PIT tells DF-224 about SIs . ... Indicates that a payload safing has been initiated . ... DF-224 safes SIC and SIs if it does not receive PIT . NSSC-I safes SIs if it does not receive PIT . Previous slide . Next slide . Back to first slide . ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

Analysis of general features of the chaotic system behavior and investigation of the properties of concrete chaotic sources. ... Analysis of information properties of chaotic systems and chaotic oscillations as concrete objects for information processing and comunications. ... This hypothesis gives a possibility of designing simple mathematical structures accomplishing various processes of information processing using chaos. ... Activities | ... E-mail: chaos@mail.cplire.ru ...

Radio Interferometry Principles . Radio Interferometry Signal Processing . ... A radio interferometer consists of a pair of directional antennas that are tuned to receive radio emissions from a source in a desired RF band. ... The antennas are pointed at the radio source of interest and are set up to receive the signal and process it into a form suitable for transmission to the correlator. ... In connected element interferometry, the digital signal goes directly to the correlator. ...

... Satellite data ] . ... The SCANOR system provides receiving and processing of the Earth-surface pictures made in visible and infra-red bands and transferred by satellites of the NOAA polar orbiter series (in the HRPT mode). ... The SCANOR system includes the desktop receiving device connected to an IBM AT 386 type computer, and the parabolic antenna with the guiding mechanism. The SCANOR system possesses the state-of-art software providing registration and processing of the received data. ...

USSR Venus Orbiters . ... Venera 15 and Venera 16 were a two-spacecraft mission designed to use 8-centimeter (3-inch) band, side-looking radar mappers to study the surface properties of Venus . ... Each spacecraft consisted of a synthetic aperture radar (SAR) and a radio altimeter. ... The Venera 15 and 16 synthetic aperture radar (SAR) systems were identical, and were used to map the surface of Venus at a resolution of 1 to 2 kilometers (.6 to 1.2 miles) over a period of 8 months. ...

... In the following table we list only the best results for each GPU: GPU b oard ATI 7950 3GB ATI 6950 1GB ATI 7770 1GB CPU Intel Core i5-2400 AMD Athlon II X4 630 Intel CoreDuo Quad CPU Q6600 Driver version 12.6 11.6 12.6 B uffe r numbe 32K 32K 32K 32K 32K 32K lenght and r of buffers B в 512 B в 512 B в 256 B в 512 B в 128 B в 512 M a x S p eed MSample/s 225MS/s Double 370MS/s Single 200MS/s Double 310MS/s Single 60MS/s Double 160MS/s Single Figure 1: SpectralGpu Logo Version 1.0, November 2012. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

... int kill(int pid, int signal) - send a signal to a process, pid . ... If pid is 0, the signal is sent to all processes, except system processes. kill() returns 0 for a successful call, -1 otherwise and sets errno accordingly. There is also a UNIX command called kill - see man pages. ... Also ctrl-c typed from the command sends a SIGINT to the process currently being. unsigned int alarm(unsigned int seconds) - sends the signal SIGALRM to the invoking process after seconds seconds. ...

... In this paper, we present an interactive signal-processing environment called Grid. ... Grid is a graphical interactive multi-threaded signal-processing environment which allows the creation of complex arrays of algorithms (called units within Grid) by simply choosing the desired units from a selection of toolboxes then graphically wiring them together. Figure: Grid's ToolBox window consists of a section which lists the available toolboxes and another showing its associated tools. ...

... Astronomers have developed their ways of processing signals almost independent to but sometimes collaboratively with engineers, although the fundamental of signal processing is same: extracting information. ... 2007 Vol 24 Issue 4: Bootstrap methods in signal processing . ... Bootstrap for Empirical Multifractal Analysis (H. Wendt, P. Abry & S. Jaffard) explains block bootstrap methods for dependent data, bootstrap confidence limits, bootstrap hypothesis testing in addition to multifractal analysis....

... 2MASS Overview . The 2MASS Sky . Executive Summary of 2MASS Second Incremental Data Products . Point Source Catalog . Extended Source Catalog . ... Distribution Mode for 2MASS Products . Data Release Plan . ... Point Source Catalog (PSC) . Extended Source Catalog (XSC) . ... 2MASS Source Naming Convention . ... General Properties of the Data Release . ... Comparison of Achieved Performance of Second Incremental Release Catalogs with Level 1 Science Specification . ...

... Tonight's Sky . ... News . Observing . ... Supernova showered Earth with radioactive debris . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Supernova simulations reveal new processes . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Reference ID: CHU . Driver ID: CHU . Serial Port: /dev/chu u ; 300 baud, 8-bits, no parity . ... Unlike the NIST time services, whose timecode requires quite specialized hardware to interpret, the CHU timecode can be received directly via a serial port after demodulation. ... The time1 fudge option can be used to set the CHU propagation delay, compensate for inherent latencies in the serial port hardware and operating system. ... Not used by this driver. stratum number . ...

... Peter J.K. "Jeff" Wisoff (Ph.D) . NASA Astronaut (former) . ... A veteran of four space flights, STS-57 in 1993, STS-68 in 1994, STS-81 in 1997 and STS-92 in 2000, Dr. Wisoff has logged a total of 42 days, 56 hours, 1 minute and 48 seconds in space, including , 19 hours and 53 minutes of EVA time in three space walks. ... Following 183 orbits of the Earth in 269 hours and 46 minutes, the eleven-day mission ended with Space Shuttle Endeavour landing at Edwards Air Force Base, California. ...

... The reduction system of observations FADPS (description in Russian) (Flexible Astronomical Data Processing System) for data of wide-band receivers of the first observation cabin of the radio telescope RATAN-600 had been created under the Unix-like operational system DEMOS for computers of the SM-1420-type (PDP/11) in 1987 for observation analysis and estimates of coordinates and flux densities of radio sources. ... FADPS: flexible astronomical data processing system at RATAN-600 in UNIX environment....

... After passing degree work in MAO of NAS of of USSR Sosonkin has received the recommendation for receipt in post-graduate course of M??. ... Subjects of his scientific work were use of new receivers of radiation, in particular of electron-optical converters at observant astronomy. ... On industrial base FTI Sosonkin has created installation on base EOC UM - 92 for Cassegrain focus of a telescope ?ZT-2 and similar to it and installation with the same type EOC for focus of Newton. ...

... The following procedures are specific to the reduction of point astrometry data. dispinit ,[ stars _char ],[ class=class ] Initialize the dispersion corrections. ... Initialize (zero) the dispersion corrections for the specified stars. ... For scan data, initialization means setting the dispersion corrected delays equal to the averaged FDL data. dispflag , channels ,[ beams ] Flag the visibility phase for the specified channels and beams. ... Interpolate to the epochs of the point data. ...