search

projecthorus / radiosonde_auto_rx

Automatically Track Radiosonde Launches using RTLSDR
GNU General Public License v3.0
477 stars 124 forks source link

Incorrect Pressure Readings #342

Closed ZL1LAC closed 3 years ago

ZL1LAC commented 3 years ago

Getting incorrect readings, the radiosonde is an RS41. Not sure what is going on.

Clb=-15.2m/s t=7.9C h=80.4% p=-1.0hPa 403.001 MHz Type=RS41-SG Radiosonde auto_rx v1.4.0

-1.0hPa reading on all the data listing.

TheSkorm commented 3 years ago

RS41-SG doesn't have a pressure sensor

From: Leith Cullen notifications@github.com Sent: Thursday, 24 December 2020 14:54 To: projecthorus/radiosonde_auto_rx Cc: Subscribed Subject: [projecthorus/radiosonde_auto_rx] Incorrect Pressure Readings (#342)

Getting incorrect readings, the radiosonde is an RS41. Not sure what is going on. Clb=-15.2m/s t=7.9C h=80.4% p=-1.0hPa 403.001 MHz Type=RS41-SG Radiosonde auto_rx v1.4.0 -1.0hPa reading on all the data listing. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

ZL1LAC commented 3 years ago

Well that's interesting I spoke to a person that launches them and he says they do.

On Thu, 24 Dec 2020, 6:04 pm Michaela Wheeler, notifications@github.com wrote:

RS41-SG doesn't have a pressure sensor

From: Leith Cullen notifications@github.com Sent: Thursday, 24 December 2020 14:54 To: projecthorus/radiosonde_auto_rx Cc: Subscribed Subject: [projecthorus/radiosonde_auto_rx] Incorrect Pressure Readings (#342)

Getting incorrect readings, the radiosonde is an RS41. Not sure what is going on. Clb=-15.2m/s t=7.9C h=80.4% p=-1.0hPa 403.001 MHz Type=RS41-SG Radiosonde auto_rx v1.4.0 -1.0hPa reading on all the data listing. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/projecthorus/radiosonde_auto_rx/issues/342#issuecomment-750742664, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAG55TZ45JGGDJ7EZGMITBDSWLDV3ANCNFSM4VHY5LZA .

TheSkorm commented 3 years ago

RS41-SGP has a pressure sensor, RS41-SG does not.

-- Michaela Wheeler michaela@michaela.lgbt

On Thu, 24 Dec 2020, at 3:09 PM, Leith Cullen wrote:

Well that's interesting I spoke to a person that launches them and he says they do.

On Thu, 24 Dec 2020, 6:04 pm Michaela Wheeler, notifications@github.com wrote:

RS41-SG doesn't have a pressure sensor

From: Leith Cullen notifications@github.com Sent: Thursday, 24 December 2020 14:54 To: projecthorus/radiosonde_auto_rx Cc: Subscribed Subject: [projecthorus/radiosonde_auto_rx] Incorrect Pressure Readings (#342)

Getting incorrect readings, the radiosonde is an RS41. Not sure what is going on. Clb=-15.2m/s t=7.9C h=80.4% p=-1.0hPa 403.001 MHz Type=RS41-SG Radiosonde auto_rx v1.4.0 -1.0hPa reading on all the data listing. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/projecthorus/radiosonde_auto_rx/issues/342#issuecomment-750742664, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAG55TZ45JGGDJ7EZGMITBDSWLDV3ANCNFSM4VHY5LZA .

— You are receiving this because you commented. Reply to this email directly, view it on GitHub https://github.com/projecthorus/radiosonde_auto_rx/issues/342#issuecomment-750743965, or unsubscribe https://github.com/notifications/unsubscribe-auth/AABZK4YV566NPPAWGHJUM3LSWLEKFANCNFSM4VHY5LZA.

darksidelemm commented 3 years ago

Both sondes I can see from NZ today were RS41-SG sondes, which are missing the pressure sensor. Some met bureaus (Australia included) decided to drop the pressure sensor and use GPS altitude instead. I believe the Vaisala ground station software will include a pressure reading, but it's based off GPS altitude, using an atmospheric density model.