Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spatial Deconvolution of Aerial Radiometric Survey and its application
  to the Fallout from a Radiological Dispersal Device   Mapping radioactive contamination using aerial survey measurements is an area
under active investigation today. The radiometric aerial survey technique has
been extensively applied following reactor accidents and also would provide a
key tool for response to a malicious radiological or nuclear incident. Methods
exist to calibrate the aerial survey system for quantification of the
concentration of natural radionuclides, which can provide guidance. However,
these methods have anticipated a spatial distribution of the source which is
large in comparison to the survey altitude. In rapid emergency-response aerial
surveys of areas of safety concern, deposits of relatively small spatial extent
may be expected. The activity of such spatially restricted hot spots is
underestimated using the traditional methods. We present here a spatial
deconvolution method which can recover some of the variation smoothed out by
the averaging due to survey at altitude. We show that the method can recover
the true spatial distribution of concentration of a synthetic source. We then
apply the method to real aerial survey data collected following detonation of a
radiological dispersal device. The findings and implications of the
deconvolution are then discussed by reference to a groundbased truckborne
survey over the same contamination.

24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex