Tables showing decimetre precision obtained with an AML L1/L2 antenna (AD410) and a reference antenna

 during tests using a high precision DGPS spot beam service

 

Test run

 

Standard deviation in position (East, North, Height) metres

 

AML L1/L2 antenna  Reference antenna
1

4 hours, approx 15000 readings

0.04,0.02,0.06

0.09,0.04,0.07

2

continued for 4 hours

0.02,0.03,0.09

0.03,0.03,0.07

3

"             "

0.05,0.04,0.10

0.02,0.03,0.05

4

"             "

0.05,0.03,0.06

0.02,0.02,0.08

RMS

        

0.04,0.03,0.08

0.05,0.03,0.07

Table 1. Standard deviation from scatter of recorded fixes.

 

Test run Mean position (E,N,H) metres
  AML L1/L2 Reference antenna
1 -0.41,-0.04,-0.03 -0.60,-0.06,-0.05
2 -0.43,-0.04,-0.05 -0.51,-0.05,-0.13
3 -0.39,-0.07,-0.06 -0.47,-0.09,-0.03
4 -0.37,-0.06,-0.04 -0.44,-0.10,-0.04

Table 2. Mean position of recorded fixes with respect to locally defined origin (0,0,0).

 

Note. It is apparent that the statistics for each of the test sequences for either antenna differ significantly from run to run, indicative of a systematic (and non-antenna derived) error component.

 

Back to main introduction