Monthly Archives: April 2016

The Vector Geometry Tool: Computing the Intersection Between a Line and a Circle

The Vector Geometry Tool: Computing the Intersection Between a Line and a Circle

Given: Two known lat/lon points (a, b) and a circle centered on the 2nd point with known radius. Solve for the lat/lon of a point (a’) where the line intersects the circle. Solution Steps First turn off all terrain. ​ … Continue reading

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STK Terrain Server v1.3 Released

STK Terrain Server v1.3 Released

The STK Terrain Server is a powerful enterprise application that runs on commodity hardware for creating and hosting Terrain that can be efficiently streamed to client applications, such as STK or Cesium.  The core technology behind the Terrain Server is … Continue reading

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ODTK 6.4.x Feature List Continues to Grow!

The just released ODTK 6.4.3 adds even more incredible features to the popular ODTK 6.4 family of releases, which includes 6.4.1 and 6.4.2 in addition to the substantial 6.4 minor version release. The ODTK 6.4.x series of releases include the … Continue reading

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It’s Time to Spring Clean your STK License Folder

It’s Time to Spring Clean your STK License Folder

Yeah, I’m a pack rat.  I’m pretty adept at backing up my thoughts on any given question with e-mails I’ve saved from 10 years ago.  Stacks of Zip drive disks from the late 1990’s?  Check.   And I may or … Continue reading

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Tracking Satellites Based on the Dilution of Precision

Tracking Satellites Based on the Dilution of Precision

The Dilution of Precision (DOP) is commonly used in satellite navigation to quantify the effects of positional measurements precision. Geometric DOP is used to determine how errors in measurements will affect the satellite’s final estimated state. It is defined as: … Continue reading

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