(IVAR) - Final Report - Strategic Environmental Research and ...

locations. Each of these storage requirements is well within the range of inexpensive COTS hard
drives available from retail computer and disk storage manufacturers. In fact, with 1 terabyte (Tb)
internal and external hard drives selling for approximately $100 in today’s retail market,
one such drive could store up to five years of continuous plots and tracks data from these radars.
Table 6-16. Data storage requirements for plots and tracks data files generated by each of five
radars operated continuously for one year at the specified locations.
Location Radar (antenna type) Dates of Operation Data Storage (GB)
MCASCP eBirdRad (dish) 01Oct07 – 30Sep08 190
NASWI AR-1 (array) 01Oct07 – 30Sep08 95
eBirdRad (dish) 01Oct07 – 30Sep08 40
SEA SEAAR2u (dish) 01Oct07 – 30Sep08 33
SEAAR2l (dish 01Oct07 – 30Sep08 27
While we have demonstrated the technical feasibility and low cost of storing a year’s worth of
radar data on local mass storage devices, from an operational standpoint copies of the data
should be stored on a remote storage device (i.e., file server or database) for both data security
and end-use applications.
Conclusion
We have successfully demonstrated that readily available and inexpensive COTS mass storage
devices can store the amount of plots and tracks data generated over a one-year period of
continuous operation by the avian radar systems being evaluated by the IVAR project. This
capability will ensure the long-term storage of bird activity data for both operational and
historical data analyses.
6.2.1.5 Increase in Number of Birds Sampled [PB5.1]
Objective
Performance Criterion PB5.1, Increase in The Number of Birds Sampled, is a primary criterion
for demonstrating the Sampling Regime capabilities of avian radars. Our objective in this case
was to demonstrate that the number of birds sampled by an avian radar far exceeds the number
that would normally be obtained using conventional visual count methods.
To demonstrate this capability, the IVAR team established as its Success Criterion (Table 3-1)
that the avian radar would detect and track at least 100% more birds than a conventional visual
sampling method.
Methods
USDA/Wildlife Services personnel collected conventional visual census data at MCAS Cherry
Point over a one-year period, from 01 October 2007 through 30 September 2008. They
established twenty-four Point-Count sites and divided them into two groups of 12 each for the
two count blocks: Figure 6-55 indicates the positions of sites 1-12 in the first count block;
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