Aug 11, 2014

DIY Radio Astronomy



A 21cm Radio Telescope for the Cost-Conscious
http://www.sbrac.org/files/budget_radio_telescope.pdf

RTL-SDR for Budget Radio Astronomy
http://www.rtl-sdr.com/rtl-sdr-for-budget-radio-astronomy/

Radio Astronomy at the Backyard:
The Construction of a 11.7 GHz Radio Telescope
and a 1420 MHz Phased Array Interferometer
http://www.olasu.com.uy/arch_contenidos/Radio_Astronomy_at_the_Backyard.pdf

simple_ra - A simple, GRC-based tool for small-scale radio astronomy, providing both Total Power and Spectral modes.  https://www.cgran.org/wiki/simple_ra

RTL_SDR Wide Spectrum Analyzer
http://zolli.altervista.org/rtl_sdr_wide_spectrum/index.html

X/Ku-Bands (10Ghz - 12GHz)
Small telescopes used for observing at microwave frequencies.
http://www.pinterest.com/nrarao/xku-bands-10ghz-12ghz/





Jun 22, 2014

Spy Satellite History



Grab and Poppy, America's Early ELINT Satellites (PDF):
http://www.nro.gov/history/csnr/programs/docs/prog-hist-03.pdf

Declassified NRO/U.S. Navy Program C ELINT Satellites (PDF)
http://www.nro.gov/foia/docs/U.S.%20Navy-NRO%20Program%20C%20Electronic%20Intelligence%20Satellites%20%281958-1977%29.pdf

History of the Poppy Satellite System, NRO, Program C (PDF)
http://www.governmentattic.org/6docs/NRO-HistoryPOPPY_1978.pdf





Corona - America's First Satellite program (PDF)
https://www.cia.gov/library/center-for-the-study-of-intelligence/csi-publications/books-and-monographs/corona.pdf

Corona history at NRO
http://www.nro.gov/history/csnr/corona/





Declassified US Spy Satellites Reveal Rare Look at Secret Cold War Space Program
http://www.space.com/12996-secret-spy-satellites-declassified-nro.html

Declassified GAMBIT and HEXAGON Videos
http://www.nro.gov/foia/declass/GAMBHEX%20Videos.html

ESM/ELINT, COMINT


ESM/ELINT in general :
http://www.radartutorial.eu/16.eccm/ja06.en.html

Electronic Operations related articles / RAAF
http://www.slideshare.net/aticourses/elint-interception-analysis


China’s Electronic Intelligence Satellite Developments (PDF):
http://project2049.net/documents/china_electronic_intelligence_elint
_satellite_developments_easton_stokes.pdf


Former Warsaw Pact / Russian / PLA Emitter Locating Systems / ELINT http://www.ausairpower.net/APA-Warpac-Rus-PLA-ESM.html

Digital receiver technology for RWR, ESM and ELINT applications (PDF)
http://www.pk-avionics.ch/ppt/ghz.pdf

Submarine Tactical ESM and ELINT Systems (brochure, PDF)
http://www.saabgroup.com/Global/Documents%20and%20Images/Naval/Electronic%20Warfare/UME100/UME100%20-%20UME200%20product%20sheet.pdf

Space Based Signal Intelligence Systems :
Global Trends & Technologies (presentation, PDF)
http://indianstrategicknowledgeonline.com/web/space_sec_session%205_Sreehari%20Rao.pdf

Probability of Intercept
(excerpt from >ELINT: The Interception and Analysis of Radar Signals<, very techie)
http://www.artechhouse.com/uploads/public/documents/chapters/Wiley_925_CH04.pdf





Electronic Intelligence At NSA - a historical perspective (PDF):
http://www.nsa.gov/about/_files/cryptologic_heritage/publications/misc/elint.pdf

Passive Radar

USRP N200

Dual Coherent Channel RTL-SDR
Read more: http://www.rtl-sdr.com/passive-radar-dual-coherent-channel-rtl-sdr/



 

Jun 3, 2014

Apr 10, 2014

Raspberry PIrate Radio

(electronicsforu.com) Using a readymade disk image and one simple solder connection, turn your Raspberry Pi into a streaming pirate radio. NOTE: The Raspberry Pi's broadcast frequency can range between 1Mhz and 250Mhz, which may interfere with government bands. We advise that you limit your transmissions to the standard FM band of 87.5MHz--108.0MHz and always choose a frequency that's not already in use, to avoid interference with licensed broadcasters.