There were 5 weeks of validation tests. The final two tests were monitoring landing airplanes flying over the water tank in Old Camarillo. A laser range finder and the monitoring system both agreed within 8.4 feet of each other on the altitude of aircraft.

There have been fourteen months of verification testing.  There have been thousands of data points checked.

There are three sources of input data used for calculating the aircraft's altitude:

1. The camcorders location Mean Sea Level (MSL) altitude is determined by using United States Geological Service (USGS) quadrangle (topo) maps and by using the Ventura County Surveyor's office horizontal benchmarks. The accuracy of these is within 1 foot.

2. The distance between the two camcorders (base-length) is determined by a Garmin Global Position Satellite (GPS) receiver. It is specified to be accurate to +/- 6 feet when using its waypoint averaging feature. This can take 12 hours of the GPS receiver gathering data to achieve this accuracy of +/- 6 feet. It usually takes about 10 minutes to achieve an accuracy of +/- 12 feet.

3. The elevation angle between the horizon at the camcorders' locations and the aircraft is determined by using a camcorder as an angle measurement device. The monitoring system's angle accuracy is about +/- .1 degrees. This was verified by using the U.S. Naval Observatory's Nautical Almanac data for celestial navigation. The Almanac's data accuracy is within .001666 degrees. The camcorder's measured elevation angle to a celestial body was compared to the Nautical Almanac's data to verify the system's accuracy. 

Using the camera's angle measurement error of +/- .1 degrees, the total system's accuracy for calculating the aircraft's altitude would be within +/- 6.7 feet for an aircraft that was 2000 feet away. The monitoring systems accuracy of +/- .1 degrees is 10 times more than what is required to monitor low flying aircraft.