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Calculation Times

Computation Times for APASplus, APAS and APASlite

Table 1 specifies the computer time involved in the calculation of the 2-D far-field (FF) with the indicated resolution for the sector {-1≤ u ≤ 1; -1 ≤ v ≤ 1}  when using a DELL XPS 8930 PC equipped with an                        AMD Ryzen 9 3900x processor @ 3.8 GHz and 16 GB RAM. The listed time values include also the time used for the calculation of the array directivity, precise beam pointing position, 3 dB beamwidth in both main planes, main beam efficiency as well as peak sidelobe level and average sidelobe level.   

 

Table 1. Computation time 2-D FF.

2-D resolution FF

u-v space

Time

(sec)

     125x125    0.011  
     251x251    0.017 
     501x501    0.048
    1001x1001      0.16
    2001x2001    0.59
    4001x4001    2.23
   10001x10001   14.3

 

The results of Table 1 were obtained with the 64-bit version of MATLAB Release 2020a, calculated for a circular array antenna equipped with 5.800 radiating elements  and refer to all three programs APASplus, APAS and APASlite.  

The listed computation times refer to the calculation of the 2-D far-field in absence of mutual coupling. Including mutual coupling between the array element in the far-field computation, requires larger computation times since for a number of elements the individual embedded element pattern has to be computed, which is a very time consuming process.