Meridian Elevate
WGS84 Drone Line-of-Sight
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
This application performs geometric line-of-sight (LoS) analysis between two elevated structures using a WGS-84 Earth ellipsoid model.
It calculates the required Height Above Ellipsoid (HAE) along the straight-line path between two radio masts, accounting for Earth curvature using a mid-chord spherical approximation.
Inputs:
Mast A base elevation (HAE) and antenna height (AGL)
Mast B base elevation (HAE) and antenna height (AGL)
Geodesic distance between masts
Interpolation position along the path
Core computation:
Linear interpolation between mast tip heights
Earth curvature correction using:
d(D − d) / (2Rₑ), where Rₑ = 6,378,137 m (WGS-84)
Required HAE at any point along the path
Outputs:
Required line-of-sight height at selected distance
Real-time interactive profile of Earth curvature, ground surface, and LoS chord
Visual indication of relative position along the path
The model is purely geometric and does not include terrain elevation data or atmospheric refraction. It is intended for engineering estimation of direct geometric visibility between fixed radio infrastructure points.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Added support for both HAE and AMSL altitude inputs - ideal for DJI RTK platforms. Your device GPS now automatically calculates the local geoid correction, so you can enter drone altitudes directly without manual conversion.
The developer, Ryan Harris, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ryan Harris
- Size
- 1.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Copyright 2026 Flight Focus Software