Atlantis Online
March 29, 2024, 05:18:49 am
Welcome, Guest. Please login or register.

Login with username, password and session length
News: FARMING FROM 6,000 YEARS AGO
http://www.thisislincolnshire.co.uk/displayNode.jsp?nodeId=156622&command=displayContent&sourceNode=156618&contentPK=18789712&folderPk=87030
 
  Home Help Arcade Gallery Links Staff List Calendar Login Register  

Detectability of Extraterrestrial Technological Activities

Pages: 1 [2] 3   Go Down
  Print  
Author Topic: Detectability of Extraterrestrial Technological Activities  (Read 1601 times)
0 Members and 55 Guests are viewing this topic.
Jennifer Murdoch
Superhero Member
******
Posts: 5235



« Reply #15 on: February 04, 2010, 01:22:37 pm »

 Radar is also the unique tool capable for making  a  survey  of such
       small objects at  all  angles  with respect to the central star.  It
       can also measure reflectivity and polarization to obtain physical
       characteristics and composition.

       For this case,  we  can assume that  each  of  the  extraterrestrial
       civilizations in the  galaxy  maintains  as good a  radar  planetoid
       and/or comet detection and analysis facility as is needed, either on
       the surface of  their  planet, in orbit, or on one of their possible
       moons.

       The threshold for the Equivalent Isotropic  Radiated Power (EIRP) of
       the radar signal  could  be  roughly estimated by the  size  of  the
       object (D) that they want to detect (according to the impact hazard)

                                      Page 8
Report Spam   Logged
Pages: 1 [2] 3   Go Up
  Print  
 
Jump to:  

Powered by EzPortal
Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum
Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy