Aerial VASCAR Countermeasure Discussion (Zaon MRX, ADS-B, etc)

lugnuts

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rjk

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I've checked out the Monroy ATD-200 and ATD-300, and I'm not 100% sure whether either of them have a built in altimeter or not. I suspect they don't because they don't list any restrictions for pressurized aircraft, although that could just be an omission. This is a quote from a PDF about the 300:

The ATD-300 continuously monitors the onboard transponder and displays its pressure altitude data when there is no traffic activity. The purpose of this monitoring is to ensure the transponder is functioning properly but also to let the pilot know he is in area of active Mode A/C interrogation since the onboard transponder is replying. It also verifies proper functioning of the ATD-300. As required by the FAA the ATD-300 uses the onboard transponder altitude data to compute traffic relative altitude.
More info: http://www.monroyaero.com/ATD300Webpage8.pdf
 

THX1138

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I don't think the altimeter matters much for our application. My PCAS unit works great for finding low flying planes. All you need is some range estimates from a mode C (or S ) radar transponder. Think about it, an aircraft doing traffic enforcement is likely to be only 1000-2000 feet overhead, not much vertical separation to you the driver on the ground.
 

rjk

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I don't think the altimeter matters much for our application. My PCAS unit works great for finding low flying planes. All you need is some range estimates from a mode C (or S ) radar transponder. Think about it, an aircraft doing traffic enforcement is likely to be only 1000-2000 feet overhead, not much vertical separation to you the driver on the ground.
How do you determine range if you don't know your own altitude?
 

THX1138

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How do you determine range if you don't know your own altitude?
phase averaging / amplitude comparison. gives you an approximate range for TPAS systems without an altimeter.
 
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TurboDriver

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There are currently Very Few ADS-B units out there. It is the future - but not much yet. We have the unit for weather and traffic (receive only) in our plane, no updated transponder yet, and it shows very little traffic. My buddy set the unit up in the plane so I am not real familiar with the "working" details as compared for auto use, I will have to ask him more details.
 

matthewmp

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There are currently Very Few ADS-B units out there. It is the future - but not much yet. We have the unit for weather and traffic (receive only) in our plane, no updated transponder yet, and it shows very little traffic. My buddy set the unit up in the plane so I am not real familiar with the "working" details as compared for auto use, I will have to ask him more details.
Do you think government owned Cessnas would have ADS-B units in them?
 

Normsky

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The first week in April Ohio was working aircraft enforcement on I-71 almost all week. Luckily Waze had one already reported and I know the area has 1/4 mile marks for one mile. An eye to the sky would say they were 1,000-1,500 feet.
 

johndoesix

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As requested, continuing the discussion in this thread...from this thread

Here is the link to the FAA ruling on ADS-B...(too tired to check if it is the latest ruling, but the agency does seem to move like molasses at times.)

http://www.gpo.gov/fdsys/pkg/FR-2010-05-28/pdf/2010-12645.pdf


itwasntme said:
From the other thread:
What is the comfortable long term operating attitude for pilots in an non pressurized cabin?
Like scuba diving, the answer is going to vary by person as to how long before their oxygen level drops. Example, pilots that fly regularly in Colorado, will routinely fly above 6500ft, and have no effects, while others in the flatlands will notice effects at lower levels.

Link to part 91 rules here

"Sec. 91.211

Supplemental oxygen.

(a) General. No person may operate a civil aircraft of U.S. registry--
(1) At cabin pressure altitudes above 12,500 feet (MSL) up to and including 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen for that part of the flight at those altitudes that is of more than 30 minutes duration;
(2) At cabin pressure altitudes above 14,000 feet (MSL) unless the required minimum flight crew is provided with and uses supplemental oxygen during the entire flight time at those altitudes; and
(3) At cabin pressure altitudes above 15,000 feet (MSL) unless each occupant of the aircraft is provided with supplemental oxygen.
(b) Pressurized cabin aircraft.
"
 

Brainstorm69

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blah

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Don't know how good it would be, but for the DIY types...check this out. The guy who put it together wanted to use it to make sure drones wouldn't get into a planes' airspace, but I can think of other uses. ;) [EDIT] Didn't realize I was necroing such an old thread. Sorry about that.


I just built one of these with a raspberry pi. I am getting poor range out of my cheap antenna. That said if you know the plane's tail number you will be able to see it if it is in range of your antenna and transmitting.
 
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sebbb306

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I just recently started to play with my Raspberry Pi 3B+ and a cheap SDR dongle. I installed PiAware and am able to see planes up to a few miles away using the cheap tiny antenna the dongle came with. There's another Raspberry Pie project that I've been looking into, called Stratux, it's an open source equivalent to the Stratus ADS-B receiver. I ordered a USB GPS dongle and will play with that for a bit. PiAware is really cool, you can see a map and planes around your location. You connect to the Pie via it's IP/webpage, you can use a phone or tablet so that would totally be integratable in a car. Next step would be a LED panel or small LCD with arrows and distance of plane and tail number, add a buzzer and you got a cheap ADS-B receiver / Collision Avoidance System for $25~$35 for the RasPi + $15 SDR dongle + $15 USB GPS.

--- DOUBLEPOST MERGED ---

here's a screenshot of PiAware from my iPhone.

This would be cool too www.stuffaboutcode.com: <Stuff about="code" />: Raspberry Pi PiAware Aircraft Radar
 

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johnboy00

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I just recently started to play with my Raspberry Pi 3B+ and a cheap SDR dongle. I installed PiAware and am able to see planes up to a few miles away using the cheap tiny antenna the dongle came with. There's another Raspberry Pie project that I've been looking into, called Stratux, it's an open source equivalent to the Stratus ADS-B receiver. I ordered a USB GPS dongle and will play with that for a bit. PiAware is really cool, you can see a map and planes around your location. You connect to the Pie via it's IP/webpage, you can use a phone or tablet so that would totally be integratable in a car. Next step would be a LED panel or small LCD with arrows and distance of plane and tail number, add a buzzer and you got a cheap ADS-B receiver / Collision Avoidance System for $25~$35 for the RasPi + $15 SDR dongle + $15 USB GPS.

--- DOUBLEPOST MERGED ---

here's a screenshot of PiAware from my iPhone.

This would be cool too www.stuffaboutcode.com: <Stuff about="code" />: Raspberry Pi PiAware Aircraft Radar
Here's a screenshot of JBV1's Proximate Aircraft Warning System (PAWS) at work...

Screenshot_20181008-151042.jpeg
 

sebbb306

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Here's a screenshot of JBV1's Proximate Aircraft Warning System (PAWS) at work...

View attachment 90075
I've been using JBV1 for a couple months now, I've never seen a PAWS alert. Is the map popping out when the alert is happening? Your app made me love my V1 btw, I'm still on the learning curve - there's just so much options, but I absolutely love JBV1 and would never use my V1 without it!
 

johnboy00

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I've been using JBV1 for a couple months now, I've never seen a PAWS alert. Is the map popping out when the alert is happening? Your app made me love my V1 btw, I'm still on the learning curve - there's just so much options, but I absolutely love JBV1 and would never use my V1 without it!
Did you turn it on? Developer options > PAWS.

And thanks!
 

johnboy00

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I checked, it was checked, I guess no plane got close enough to me to trigger an alert.
I live a few miles from an airport, so I see planes all the time.
 

infiniti

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can I use that without a V1 connection?
 

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