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Questions tagged [gps-time]

GPS Time is an Atomic Time Scale.

Origin of this time system: 06 jan 1980 (00h 00m 00s).

Scale of this time system: SI second .

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GPS hardware requirements and custom download link

I have 2 unrelated questions in one so please bear with me. I want to know if an Android device absolutely requires a simm card inorder to execute all things Location Based Services. And ... I would like friends of mine to download my samlpe app. Is…
sisko
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NTPD Pseudo Servers

Good evening! I'm configuring NTP on an embedded Linux system connected with an U-Blox GPS receiver. I've used NTPD and GPSD. I would like to know what's the technical difference between: PPS Signal provided by the GPSD shared memory SHM, (Pseudo…
Francesco Zanel
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How can I get the GPS time from the pixhawk, on a "companion computer"

My project will have two "companion computers" on-board a quadcopter. One will speak to APMCopter autopilot running on a pixhawk, using dronekit python, and the other will communicate with it's peer over ethernet. I'd like both computers to have…
nzc
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Leap seconds in timestamp

The UNIX Epoch includes leap seconds. But do we add those leap seconds or are they removed from the timestamp? From the GPS epoch, which doesn't include the leap seconds, to convert a UNIX timestamp to a GPS timestamp, do I need to include or remove…
dyesdyes
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How to sync time from GPS using NTP On Gentoo

I have a problem in synchronizing system time with GPS time. I am using U-Blox GPS Receiver. The GPS receiver is working fine through /dev/ttyXR4 port.The problem now, I want the system to automatically update itself with GPS time using NTP…
Fakhrullah Zulkipli
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Set the time on my Android from GPS

There are boatloads of Android apps that set the time on a rooted Android from the GPS data. I even found one with malware in it, according to AVG. Grrr. However, I'd like to build the capability into my application (which is always run on a…
Rich
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How to get number of available sattelite in android gps

I'm working on GPS in android and I want to show the number of Satellite available at that time for current location and I am getting 3 at all the time in my app while in other app they showing 6 to 9 at same location.I don't know what is the…
Sachin D
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Header and repeating time information removal from a GPS TEC rinex file

I have a rinex file and is shown here..an image showing the first part of rinex file http://imageshack.us/photo/my-images/593/65961409.jpg The data (AOPR Rinex file) is downloaded from the site after entering a year and a…
Sumesh G
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Is there a way to know which app is supplying GPS time so I can deal with the 16 seconds leap seconds correction?

I have an app that uses GPS to display the time to start a race. It has to be right on what is displayed on most any GPS device (Garmin etc). I use an external GPS bluetooth module and an app to interface to the Android system to replace the…
Allen Edwards
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GPS is searching for too long

I have an app that uses the GPS. My problem is that when I get to the part that the GPS is looking for a signal and cant find it, it just keeps on searching. This kills the battery. I used…
roiberg
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GPS and Time Activated Push Notifications

I'm trying to send push notifications to users when they are at a specific location for more than 5 min. I know that you can send push notifications when a user is at a specific location, but how exactly do I "delay" the push notification 5…
Erik Lydecker
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Through NMEA data, how to get four satellite states: not in use, receiving, searching, and in use?

In GPS, through NMEA data, how to get four satellite states: not in use, receiving, searching, and in use? Is it through the SNR value in GSV? What is the SNR value in GSV
man mook
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rockpi pps signal input for time synchronization

Im new to rockpi and Im currently working on a project were I want to receive PPS through the GPIO pins of the rockpi for time synchronization. I’m not sure how to get the PPS on the pins of my choice or any pins for that matter. Can anybody suggest…
luke j
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Get GPS to UTC leap seconds

Is there a simple way to get leap seconds between gps and utc time through an API or python library which is automatically update if the leap seconds change over the years ?
Matteo Giorgi
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Arduino GPS Time And Coordinates Values Update Issue

I'm new to arduino. There is an issue in the code I wrote in my project. The issue is when GPS sensor(Adafruit ultimate gps breakout v3) finds a satellite, GPS time and coordinates values not changing. Other values are working but only GPS isnt.…
Korhan Kara
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