{"id":236,"date":"2014-06-07T17:40:07","date_gmt":"2014-06-07T16:40:07","guid":{"rendered":"http:\/\/www.eb3frn.net\/?p=236"},"modified":"2014-06-07T20:15:50","modified_gmt":"2014-06-07T19:15:50","slug":"isee-3-ice-detected","status":"publish","type":"post","link":"https:\/\/www.eb3frn.net\/?p=236","title":{"rendered":"ISEE-3 \/ ICE DETECTED !"},"content":{"rendered":"

Finally after four days of attempts I detected the ISEE-3 \/ ICE<\/a> space probe \ud83d\ude42<\/p>\n

I used the LHCP channel that is at 2217.5MHz becuse I have a lot of noise in the RHCP channel.\u00a0 I used a can feddhorn and a plexiglas depolarizer.<\/p>\n

The signal is very weak and impossible to see without time integration.\u00a0 The offset reported by the Arecibo guys <\/a>of 7202Hz has been very important to locate the probe. In my case I’m getting the probe with a carrier offset of 6035Hz from 2217.5MHz.<\/p>\n

Here the first detection:<\/p>\n

\"ISEE-3<\/a>

ISEE-3 \/ ICE Dection<\/p><\/div>\n

After the detction, to confirm that I moved the dish 18deg, and the signal disappears<\/span><\/span>:<\/p>\n

\"ISEE-3<\/a>

ISEE-3 \/ ICE off center<\/p><\/div>\n

To confirm again the signal I stoped the doppler compensation:<\/p>\n

\"ISEE-3<\/a>

ISEE-3 \/ ICE no signal without the doppler compensation<\/p><\/div>\n

Finally I started to compensate the doppler again and the signal is acquired again:<\/p>\n

\"ISEE-3<\/a>

ISEE-3 \/ ICE with doppler corrected<\/p><\/div>\n

To finally confirm at 100% a offline signal process without doppler compensation to see doppler signature. I used the amazing baudline autodrift option<\/a>, it is a great feature to see signals with doppler:<\/p>\n

\"ISEE-3<\/a>

ISEE-3 \/ ICE baudline autodrift<\/p><\/div>\n

Here<\/a> the IQ recording from Spectravue<\/a> without the doppler compensation used\u00a0 in the baudline analysis. The sample rate is 8138 samples\/sec:<\/p>\n

www.eb3frn.net\/files\/Record1_20140607_151047_nodoppler.wav<\/a><\/p>\n

73!<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Finally after four days of attempts I detected the ISEE-3 \/ ICE space probe \ud83d\ude42 I used the LHCP channel that is at 2217.5MHz becuse I have a lot of noise in the RHCP channel.\u00a0 I used a can feddhorn and a plexiglas depolarizer. The signal is very weak and impossible to see without time […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[8,1],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/p31CYx-3O","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/236"}],"collection":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=236"}],"version-history":[{"count":5,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions"}],"predecessor-version":[{"id":246,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=\/wp\/v2\/posts\/236\/revisions\/246"}],"wp:attachment":[{"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eb3frn.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}