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Groups > sci.physics > #636224
| From | Serg io <invalid@invalid.com> |
|---|---|
| Newsgroups | sci.physics |
| Subject | Re: GPS Again. |
| Date | 2017-06-12 22:28 -0500 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <ohnm4k$hv1$1@gioia.aioe.org> (permalink) |
| References | (9 earlier) <pn131e-06d.ln1@mail.specsol.com> <72ea09c4-4673-4efc-b02e-bc765f045e69@googlegroups.com> <lh831e-ird.ln1@mail.specsol.com> <ohn89k$12o$1@gioia.aioe.org> <r7t31e-vag.ln1@mail.specsol.com> |
On 6/12/2017 8:54 PM, jimp@specsol.spam.sux.com wrote: > Serg io <invalid@invalid.com> wrote: >> On 6/12/2017 3:01 PM, jimp@specsol.spam.sux.com wrote: >>> pcardinale@volcanomail.com wrote: >>>> Your link actually supports what Serg io said. The article describes SS as being either frequency hopping, or direct sequence (which is what Serg io was describing). >>> >>> Upon rereading the article, it describes SS as FHSS, DSSS, THSS, CSS and >>> combinations of these techniques, which has what the fuck to do with GPS >>> which operates on fixed, well defined frequencies? >>> >>> >> >> nope. What you are calling a 'well defined frequency' is only the >> center of the GPS SS band, and it extends more than 10Mhz on each side. > > Idiot. > > *PLONK* > > [guess jimp is a narrow-bander.] another link showing GPS is spread spectrum (near bottom) http://alumni.cs.ucr.edu/~saha/stuff/cdma_gps.htm http://www.radio-electronics.com/info/satellite/gps/signals.php https://www.e-education.psu.edu/geog862/node/1768 The GPS signal needed to be secure and resistant to both jamming and multipath. A spread spectrum, meaning spreading the frequency over a band wider than the minimum required for the information it carries, helped on all counts. This wider band also provided ample space for pseudorandom noise encoding, a fairly new development at the time. The PRN codes like those used in System 621B allowed the GPS receiver to acquire signals from several satellites simultaneously and still distinguish them from one another.
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Re: GPS Again. Ckeho Baùkora <unukn@owyqar.og> - 2017-05-27 10:37 +0000
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-05-30 09:57 -0500
Re: GPS Again. Helmut Wabnig <hwabnig@.- --- -.dotat> - 2017-05-30 20:52 +0200
Re: GPS Again. Ernest Rivers <erwm@weicnne.ac> - 2017-05-30 19:17 +0000
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-05-30 15:23 -0500
Re: GPS Again. Helmut Wabnig <hwabnig@.- --- -.dotat> - 2017-05-30 22:53 +0200
Re: GPS Again. Ernest Schwanenflügel <erwm@wanenf.oa> - 2017-05-30 20:59 +0000
Re: GPS Again. Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-05-31 00:42 +0200
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-05-30 19:03 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-05-30 21:30 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-05-30 19:01 -0500
Re: GPS Again. Ernest Rivers <erwm@weicnne.ac> - 2017-05-30 19:15 +0000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-09 11:37 +1000
Re: GPS Again. Jim Limey <eeug@dnne.ri> - 2017-06-09 14:32 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-09 12:51 -0500
Re: GPS Again. Kitubu Nkyaku <akntuu@buwkau.kk> - 2017-06-09 18:52 +0000
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-10 09:23 +1000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-10 11:23 +1000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-10 11:21 +1000
Re: GPS Again. Kitubu Nkyaku <akntuu@buwkau.kk> - 2017-06-10 10:42 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-10 19:38 -0500
Re: GPS Again. Nými Icelulózy <ejienm@wzsfwe.ul> - 2017-06-16 11:30 +0000
Re: GPS Again. Sегgi о <iinvalid@invalid.com> - 2017-06-16 10:40 -0500
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-11 11:11 +1000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-10 21:20 -0500
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-11 12:31 +1000
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-06-10 22:40 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-10 23:20 -0500
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-11 05:14 +1000
Re: GPS Again. "Paul B. Andersen" <relativity@paulba.no> - 2017-06-10 22:16 +0200
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-11 07:19 +1000
Re: GPS Again. "Paul B. Andersen" <relativity@paulba.no> - 2017-06-11 22:35 +0200
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-11 15:44 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-11 18:03 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-11 19:00 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-12 11:39 +1000
Re: GPS Again. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-06-12 02:33 +0000
Re: GPS Again. "hanson" <hanson@quick.net> - 2017-06-12 10:15 -0700
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 13:40 -0500
Re: GPS Again. "hanson" <hanson@quick.net> - 2017-06-12 14:19 -0700
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-06-11 22:42 -0500
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-11 23:27 -0500
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 04:47 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 08:20 -0500
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 17:18 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-12 18:15 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 22:32 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-12 20:48 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-13 01:52 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-13 19:57 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 00:46 +0000
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-06-12 09:58 -0500
Re: GPS Again. Selina Dieter <uiueeits@wlwtwstd.ci> - 2017-06-12 15:08 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 10:37 -0500
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 17:21 +0000
Re: GPS Again. Selina Dieter <uiueeits@wlwtwstd.ci> - 2017-06-12 17:40 +0000
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 18:05 +0000
Re: GPS Again. Selina Dieter <uiueeits@wlwtwstd.ci> - 2017-06-12 18:19 +0000
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 19:16 +0000
Re: GPS Again. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-06-12 19:43 +0000
Re: GPS Again. pcardinale@volcanomail.com - 2017-06-12 12:22 -0700
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-12 20:01 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 18:32 -0500
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-13 01:54 +0000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 22:28 -0500
Re: GPS Again. benj <benj@nobody.net> - 2017-06-13 19:59 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 00:48 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-13 21:35 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 02:11 +0000
Re: GPS Again. Mahipal <mahipal7638@gmail.com> - 2017-06-13 19:50 -0700
Re: GPS Again. benj <benj@nobody.net> - 2017-06-13 23:53 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 05:27 +0000
Re: GPS Again. Sегg iо <invalid@invalid.com> - 2017-06-14 09:10 -0500
Re: GPS Again. benj <benj@nobody.net> - 2017-06-14 17:10 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 21:33 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-14 18:19 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 22:33 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-15 17:01 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-15 23:09 +0000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-13 23:49 -0400
Re: GPS Again. jimp@specsol.spam.sux.com - 2017-06-14 05:29 +0000
Re: GPS Again. Sегg iо <invalid@invalid.com> - 2017-06-13 20:29 -0500
Re: GPS Again. pcardinale@volcanomail.com - 2017-06-13 12:33 -0700
Re: GPS Again. Серг ио <invalid@invalid.com> - 2017-06-13 16:39 -0500
Re: GPS Again. benj <benj@nobody.net> - 2017-06-12 18:25 -0400
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-12 18:45 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-12 10:35 +1000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-12 11:05 +1000
Re: GPS Again. Serg io <invalid@invalid.com> - 2017-06-11 23:29 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-12 20:12 +1000
Re: GPS Again. Poutnik <poutnik4nntp@gmail.com> - 2017-06-12 13:54 +0200
Re: GPS Again. Selina Dieter <uiueeits@wlwtwstd.ci> - 2017-06-12 12:47 +0000
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-13 04:13 +1000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-13 12:59 +1000
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-13 04:22 +1000
Re: GPS Again. Sylvia Else <sylvia@not.at.this.address> - 2017-06-13 13:00 +1000
Re: GPS Again. Tom Roberts <tjroberts137@sbcglobal.net> - 2017-06-13 13:32 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-14 10:09 +1000
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-14 09:34 +1000
Re: GPS Again. Серг ио <invalid@invalid.com> - 2017-06-13 18:42 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-14 12:40 +1000
Re: GPS Again. moroney@world.std.spaamtrap.com (Michael Moroney) - 2017-06-14 04:06 +0000
Re: GPS Again. "hanson" <hanson@quick.net> - 2017-06-13 23:01 -0700
Re: GPS Again. Sегg iо <invalid@invalid.com> - 2017-06-13 23:19 -0500
Re: GPS Again. Sегg iо <invalid@invalid.com> - 2017-06-13 23:46 -0500
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-14 20:07 +1000
Re: GPS Again. Sегg iо <invalid@invalid.com> - 2017-06-14 09:17 -0500
Re: GPS Again. "HGW..." <hgw@....> - 2017-06-17 08:26 +1000
Re: GPS Again. benj <benj@nobody.net> - 2017-06-16 20:40 -0400
Re: GPS Again. Ecembre Abin <umueuu@eibbwaw.ee> - 2017-06-17 08:05 +0000
Re: GPS Again. "HGW, DSc." <HG@....> - 2017-06-17 22:20 +1000
Re: GPS Again. Sегgi о <iinvalid@invalid.com> - 2017-06-17 07:58 -0500
Re: GPS Again. benj <benj@nobody.net> - 2017-06-14 17:06 -0400
Re: GPS Again. "HGW..." <hgw@....> - 2017-05-31 09:58 +1000
Re: GPS Again. pcardinale@volcanomail.com - 2017-06-09 13:35 -0700
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