jump to first page using aprs to report weather observations

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Jump to first page Using APRS to Report Weather Observations

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Jump to first page APRS Basics n Data packets transmitted by an APRS station are received by other APRS stations and retransmitted n This process is known as digipeating (digital repeating) n Any APRS station is available to retransmit received information when it is not originating information n The data in the packet can be: u position information u objects u Messages/data n When APRS data is received by an IGATE, it is routed packets through the internet n When APRS data is received by a GATE it is retransmitted on a different frequency.

TRANSCRIPT

Page 1: Jump to first page Using APRS to Report Weather Observations

Jump to first page

Using APRS to Report Weather Observations

Page 2: Jump to first page Using APRS to Report Weather Observations

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APRS Introduction

APRS can be used to: Report weather data Track weather systems

Page 3: Jump to first page Using APRS to Report Weather Observations

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APRS Basics Data packets transmitted by an APRS station are

received by other APRS stations and retransmitted This process is known as digipeating (digital repeating) Any APRS station is available to retransmit received

information when it is not originating information The data in the packet can be:

position information objects Messages/data

When APRS data is received by an IGATE, it is routed packets through the internet

When APRS data is received by a GATE it is retransmitted on a different frequency.

Page 4: Jump to first page Using APRS to Report Weather Observations

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Reporting Weather Data A network of APRS observation

stations would perform 2 functions Collection and transmission of

weather data Relay of weather data from other

observation stations Weather data could be routed onto

the Internet by an IGATE for delivery to the NWS

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Internet

How Does APRS work?An APRS packet Bounces From

One “Digipeater” To AnotherSince APRS Packets Aren’t Addressed To A Particular Station,

Anyone Can Hear Them

If An IGATE Station Hears The Position Report,

It Is Passed On To the Internet For Everyone To See

The Data Moves Outward In Tiers

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Tracking Users can create and move

objects such as hurricanes and funnel clouds.

The objects can be transmitted through the APRS network to the NWS

Objects could be used to transmit attributes not quantifiable as a number

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Weather Collection of data Trending Weather Data Weather Alerts from NWS Superimposed RADAR

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µWX

µWX is a self-contained WX station and TNC that measures temperature, air pressure, and humidity.

The µWX supports the Dallas One-Wire weather station.

Only a transceiver must be added to have a complete APRS station

Cost is around $50 For more info: http://www.qsl.net/k0rx/uWx/

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Dallas One-Wire WX station

The unit measures wind speed, wind direction and temperature.

It is compatible with the µWX unit Cost is ~$79 For more info:

http://www.aag.com.mx/weather.html

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Survivability of APRS

Because of the distributed nature of the APRS network, each station needs to transmit only enough power to reach the neighboring stations. APRS stations could be designed for extended solar/batter operation

Because all APRS stations retransmit any received signal, the network is not crippled by the loss of a few nodes.

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Flexibility of APRS

The APRS stations are available to relay other APRS data between weather data packets.

The other data could include: Real-time position updates of relief

workers Short messages from remote

facilities such as Red Cross Shelters.

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The Next Steps

Set up a pilot APRS-Weather program in one region of the State

If the pilot APRS-Weather program is successful, expand coverage to the entire state of SC.