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 PC equipped with an AMD Ryzen 9 3900x processor @ 3.8 GHz and 32 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 | 0.010 |
251x251 | 0.015 |
501x501 | 0.038 |
1001x1001 | 0.12 |
2001x2001 | 0.43 |
4001x4001 | 1.71 |
10001x10001 | 10.2 |
The results of Table 1 were obtained with the 64-bit version of MATLAB Release 2021b 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 apply 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; a very time consuming process.