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Groups > sci.physics > #636224

Re: GPS Again.

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>

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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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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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