Stupid Attorney taling about GPS's

No, but I am sure you will enlighten us. I have a fairly good idea, but I
am not sure what those specific terms mean in the world of GPS. By the way,
I did not use those terms - you did. I used the broader term:
"interference."


"Tarver Engineering" wrote in message
...

"Richard Hertz" wrote in message
...
Huh,

I was under the impression that the GPS signals are fairly weak and
intentional interference is a serious issue.
Is that not correct?

Intentional jamming of GPS is difficult for newer units, as a simple
filter
algorithm will remove most jamming signals. Do you know the difference
between spoofing and jamming?

"Richard Hertz" wrote in message
...
No, but I am sure you will enlighten us. I have a fairly good idea, but I
am not sure what those specific terms mean in the world of GPS. By the
way,
I did not use those terms - you did. I used the broader term:
"interference."

GPS is a spread spectrum hahn waveform and has good resistance to
interference.

I could not make that same specific claim for the data link used by police.

-------------
Peterson's attorney, Mark Geragos, argued that the information gathered
through global positioning system technology was not accurate. GPS uses
signals from dozens of satellites to show a receiver's position to
within a few feet.

"If the FAA will not approve GPS for the landing of an aircraft, how can
a court of law approve its forensic use in a capital case?" he said.
--------------

I expected 1 or 2 replies but not 1 or 2 *hundred*.

Well not to start a legal thread in R.A.P but here is another
great one I read about in an article about the
Martha Stewart trial:

begin
Under cross-examination, Bacanovic's lawyer, Richard Strassberg, tried
to shake up the ink expert's credibility by saying, "You are aware of
the ASTM standards for ink analysis."

"Yeah, I wrote them," Stewart replied. The courtroom burst into laughter.
end

amazing.

Gerald

On Thu, 19 Feb 2004 08:42:41 -0500, "Dennis O'Connor"
wrote:

Yup, and there is the 60mph bank, where every time the radar gun is at a
certain spot the bank registers at 60 mph... microwave motion detector at
the bank leaking radiation that mixes with the gun's frequency to produce
the spoofed reading
Oh, the officer will tell you that can't be... Ask him, what do you think
that the ECM box on an F 14/15/16/18/22/117 fighter does when an enemy fire
control radar tries to lock on...
denny

As a side note to your comment, When I was an officer on patrol, I
was out by the airport running radar when an F-16 was doing low
approaches. Curiousity got to me so I pulled the radar out of its
mount and got out of the car and pointed it at him. Once he got into
my range (speed or distance, I dont know because it started reading
199 which is the highest it will go) I started clocking him, If I
recall correctly as he was about to execute the missed, he was doing
about 140mph. I sat there for a little while longer to watch him
come back again. I again started tracking him with my radar. My LED
readout then showed JAMMED. I had to laugh as I could just see him
shooting me the bird as he flew by.

Scott

Jeez, I dunno for sure... Call the Chinese embassy and ask...
denny
"Nomen Nescio" ] wrote in message
...
-----BEGIN PGP SIGNED MESSAGE-----

From: "Dennis O'Connor"

Oh, the officer will tell you that can't be... Ask him, what do you think
that the ECM box on an F 14/15/16/18/22/117 fighter does when an enemy
fire
control radar tries to lock on...
denny

Just curious. Does the F117 carry ECM? Seems like it would defeat the
whole
"stealth" thing.


-----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBQDXeEJMoscYxZNI5AQFiXwQAqie5fteNeTJd4QqADW r7hsKSAyuF21j2
k5B43QfQn41x2SmzkukqGD95EjKypuyvZ2Bc+yyYtdtkSYBSBN jkInAjk3IEB4Ce
xQ8Gi638SqAY3o9fG1e0VkGisjVBwbnyuACj65rgcyC4OemOTk r5S6RneLs14nhp
6VR+5o6xoSw=
=X40B
-----END PGP SIGNATURE-----

Howdy!

In article .net,
Dave S wrote:
The actual news article goes into this detail. After Laci Peterson was
reported missing, the police department placed covert GPS tracking
devices on all of his vehicles and monitored the vehicle (and therefore
Scott's) whereabouts pretty much constantly. This explains how they
thought he was headed for Mexico to flee the country. The defense
attorney is trying to get this surveillance data thrown out/disallowed..
and in trying to do so invoked the claim that if GPS wasnt accurate
enough to land airplanes, it wasnt iron-clad enough to be used as
evidence in a capital case.

On its face, this is a bit disturbing. Did the police have the sanction
of the courts before emplacing these devices? If not, it smacks of
unlawful search, etc. On the other hand, if a court issued the moral
equivalent of a search warrant permitting the use of them, he's just in
deep doodoo...

yours,
Michael


--
Michael and MJ Houghton | Herveus d'Ormonde and Megan O'Donnelly
| White Wolf and the Phoenix
Bowie, MD, USA | Tablet and Inkle bands, and other stuff
| http://www.radix.net/~herveus/

There is a story I have read that concerns a couple of english constables on
road patrol near an RAF airbase... As a pair of the base's Tornados in tight
formation, came low along the road, the officers tilted their dash unit and
got a radar speed reading well above the posted limit obviously... On a
lark, one officer drove out to the airbase and asked to speak to the flight
commander... He then advised the officer he wanted to give the pilots a
warning ticket for speeding...
The flight commander laughed and said the pilots had mentioned that they had
a sudden 'radar lock alarm' on their ECM panels, and the only reason the
officer was able to be there was that their ECM Auto Protect was in standby
mode, otherwise he would have gotten a HARM missile (high speed
antiradiation missile) up his ahem radar gun...

Don't know the truth in this story, but it is amusing...
denny

"SD" sdatverizondot.net@ wrote in message My LED
readout then showed JAMMED. I had to laugh as I could just see him
shooting me the bird as he flew by.

Scott

There is a trial rule taught to all sophomore law students, "Never ask a
question on court you don't already know the answer to"
He obviously forgot the rule...

"Gerald Sylvester" wrote in message
news

-------------
Peterson's attorney, Mark Geragos, argued that the information gathered
through global positioning system technology was not accurate. GPS uses
signals from dozens of satellites to show a receiver's position to
within a few feet.

"If the FAA will not approve GPS for the landing of an aircraft, how can
a court of law approve its forensic use in a capital case?" he said.
--------------

I expected 1 or 2 replies but not 1 or 2 *hundred*.

Well not to start a legal thread in R.A.P but here is another
great one I read about in an article about the
Martha Stewart trial:

begin
Under cross-examination, Bacanovic's lawyer, Richard Strassberg, tried
to shake up the ink expert's credibility by saying, "You are aware of
the ASTM standards for ink analysis."

"Yeah, I wrote them," Stewart replied. The courtroom burst into laughter.
end

amazing.

Gerald

Richard Hertz wrote:

No, but I am sure you will enlighten us.

Well, I will, in any case. Jamming a signal blocks it in such a way that it is
pretty much useless. Jam the GPS signals, and your receiver can't tell where it
is. Spoofing signals causes the receiver to report an incorrect location while
"thinking" that everything's working correctly.

George Patterson
A diplomat is a person who can tell you to go to hell in such a way that
you look forward to the trip.

"Dennis O'Connor" wrote in message
...
There is a story I have read that concerns a couple of english constables
on
road patrol near an RAF airbase... As a pair of the base's Tornados in
tight
formation, came low along the road, the officers tilted their dash unit
and
got a radar speed reading well above the posted limit obviously... On a
lark, one officer drove out to the airbase and asked to speak to the
flight
commander... He then advised the officer he wanted to give the pilots a
warning ticket for speeding...
The flight commander laughed and said the pilots had mentioned that they
had
a sudden 'radar lock alarm' on their ECM panels, and the only reason the
officer was able to be there was that their ECM Auto Protect was in
standby
mode, otherwise he would have gotten a HARM missile (high speed
antiradiation missile) up his ahem radar gun...

Don't know the truth in this story, but it is amusing...


Urban Legend :~(

http://www.snopes.com/horrors/techno/radar.htm