On the performance degradation of a low sidelobe phased array due to correlated and uncorrelated errors
Abstract
Attention is given to the relationship between the side-lobe level and the array random errors. In particular, the limitation on the side-lobe level is presented as a function of the array errors. It can be seen intuitively that this limitation must be a function of the desired side-lobe level, the number of elements in the array, and the nature of these errors. Because these errors are generally random in nature, the results are in terms of probability distributions. It is shown that the amplitude distribution of the radiation pattern for both a linear array and a planar array is Rician. Figures are included showing a set of universal curves for such distributions. The curves are given in different sigma values and are normalized to the designed side-lobe level. It is also shown that the sigma value for both linear arrays and planar arrays has a similar form, which is a function of errors and array illuminations.
- Publication:
-
Radar-82
- Pub Date:
- 1982
- Bibcode:
- 1982rpi..conf..355H
- Keywords:
-
- Antenna Arrays;
- Antenna Design;
- Error Analysis;
- Phased Arrays;
- Sidelobe Reduction;
- Probability Distribution Functions;
- Random Errors;
- Communications and Radar