Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The passive and active periods for the intermittent use of an active
  sensor to detect an evasive target   Your task is to detect a submarine with your active sonar. The submarine can
hear your active sonar before you can detect him. If the submarine is fast
enough he can evade you before you can detect him. How do you then detect him?
If you are using your active sonar continuously you will not detect him.
Likewise, if you are not using your sonar at all. In between those two extremes
there is an optimum. We will find that optimum. Or said more precisely and
general: In the same two dimensional region two platforms are present. One
platform, the searcher, equipped with one active sensor (sonar, radar, lidar
etc.), is trying to detect the other platform, the target, by means of its
active sensor. The target tries to avoid detection using only a passive sensor
to detect the searcher. The target can detect the active sensor before the
searcher can detect the target (forestalling). The active sensor is therefore
used intermittently to surprise the target. The aim of this study is to
quantify the passive period of the active sensor by minimizing missed detection
opportunities. The active period is subsequently found by maximizing the
average detection width of the searcher sensor over time.

7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph