Re: GPS Again.

From	Serg io <invalid@invalid.com>
Newsgroups	sci.physics
Subject	Re: GPS Again.
Date	2017-06-12 18:32 -0500
Organization	Aioe.org NNTP Server
Message-ID	<ohn89k$12o$1@gioia.aioe.org> (permalink)
References	(9 earlier) <85v21e-ltc.ln1@mail.specsol.com> <ohmjn0$10mj$1@gioia.aioe.org> <pn131e-06d.ln1@mail.specsol.com> <72ea09c4-4673-4efc-b02e-bc765f045e69@googlegroups.com> <lh831e-ird.ln1@mail.specsol.com>

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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.

The center is 1575.42 Mhz, but the spread spectrum bandwidth for P code 
is over 20 Mhz wide, 1563 Mhz to 1587  Mhz.

All DSSS are spec'ed out this way, Fo for center of the band and the 
spread range.

you can make a basic SS simply by overmodulating an AM signal, a little 
or a lot. Use on off keying (OOK)  and a 1575 Mhz carrier, and put a 
digital stream into just keying it on and off say at 50Mhz, that will 
spread it out. [100Mhz wide to capture the first lobe in the receiver]

see spectrum of GPS here, and see the red for P code;
https://www.e-education.psu.edu/geog862/node/1753

It is important to know this, because most of the cellphones use SS now.

google   "Code Division Multiple Access" (all SS)

old cellphones used to be "Time Division Multiple Access", but they are 
power hogs.  That is frequency hopping.

orgionally everyone used "Frequency Division Multiple Access"

Thread

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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