Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ambiguities in Direction-of-Arrival Estimation with Linear Arrays   In this paper, we present a novel approach to compute ambiguities in thinned
uniform linear arrays, i.e., sparse non-uniform linear arrays, via a
mixed-integer program. Ambiguities arise when there exists a set of distinct
directions-of-arrival, for which the corresponding steering matrix is
rank-deficient and are associated with nonunique parameter estimation. Our
approach uses Young tableaux for which a submatrix of the steering matrix has a
vanishing determinant, which can be expressed through vanishing sums of unit
roots. Each of these vanishing sums then corresponds to an ambiguous set of
directions-of-arrival. We derive a method to enumerate such ambiguous sets
using a mixed-integer program and present results on several examples.

17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
3
The categories of this paper are: physics