On Resolving Angle Ambiguities of n-Channel Interferometer Systems for Arbitrary Antenna Arrangements in a Plane
Abstract
The concept of array ambiguity plot is introduced, and it is shown that there are exactly five distinct topological cases for antennas arranged in a plane. Some examples are given, including all regular polygon arrangements. The remainder of the paper is concentrated on those antenna arrays having a two- dimensional lattice point topology for their array ambiguity plots, as they appear to have the most forgiving tolerance requirements. Angle processing implementation and measurement tolerances for ambiguity resolution are discussed. It is shown that, for a given tolerance and region within which antennas are to be located, the ambiguities of the plot move away exponentially with number of antennas if they are placed judiciously. It is therefore possible to obtain the advantages of wide baseline systems which are ambiguity-free with just a few antennas. The one-dimensional antenna array situation is treated, it being a special case of the theory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1973
- Accession Number
- AD0776335
Entities
People
- James E. Hanson
Organizations
- Johns Hopkins University