How do I find my height above sea level?

In summary, achieving centimeter precision using apps may require special equipment and is not always guaranteed due to various factors that can affect GPS accuracy.
  • #1
TSN79
424
0
I'm under the impression that this takes special equipment? We're talking centimeter precision by the way. Shouldn't I be able to get this from some App by now?!
 
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  • #2
It is specialist equip! :)
Top of the line GSP systems I work with will give you 1 to 1.5 cm (10 - 15mm)accuracy at a cost of $20,000 or so because multiple units are needed for that sort of accuracy

standard handheld GSP units like the Garmin E-Trex etc will give down to maybe 3-5 metres of accuracy

Dave

Ohh I should actually qualify that ... We find that the vertical accuracy averages ~ half the quality of horizontal accuracy. So for a horizontal accuracy of 1cm, which under good conditions is quite achievable,
the vertical accuracy will be ~ 2cm
 
  • #3


It is possible to achieve centimeter precision using some apps, but it does require special equipment. Some apps use GPS technology to provide location data, but the accuracy of GPS can vary and may not be precise enough for your needs. To achieve centimeter precision, you would need to use a high-precision GPS receiver or other specialized equipment. Additionally, factors such as interference and signal strength can also impact the accuracy of GPS data. So while it is possible to get centimeter precision from some apps, it may not be reliable or consistent enough for your needs. It's always best to do some research and consider your specific requirements before relying on any app for precise measurements.
 

1. What is the definition of "height above sea level"?

"Height above sea level" refers to the vertical distance from a specific point on the earth's surface to the average level of the ocean's surface.

2. How do I determine my height above sea level?

The most accurate way to determine your height above sea level is by using a global navigation satellite system (GNSS) receiver, such as a GPS device. This device uses satellite signals to calculate your elevation above sea level.

3. Can I use a topographic map to find my height above sea level?

Yes, you can use a topographic map to estimate your height above sea level. Topographic maps show contour lines that connect points of equal elevation, allowing you to determine your approximate elevation at a specific location.

4. What other factors can affect my height above sea level?

In addition to elevation, other factors that can affect your height above sea level include local topography, atmospheric pressure, and weather conditions such as temperature and humidity.

5. Is there a website or app that can help me find my height above sea level?

Yes, there are many websites and apps that provide elevation data, including Google Maps, MapQuest, and GPS altitude apps. However, the accuracy of these sources may vary, so it is best to use a GNSS receiver for precise measurements.

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