Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spacecraft Tracking with the SKA   The possibility of using the SKA for occasional support of scientific space
missions should be considered, along with all other science goals, in the
design of the array. The benefits of higher data rates from distant spacecraft
during high priority, short duration mission phases can be dramatic, while the
technical requirements on the SKA to allow this capability are very few. The
most fundamental requirement is coverage of the primary downlink frequencies
for deep space missions. Additional benefits can result from real-time high
precision angular position measurements of spacecraft. Such measurements allow
spacecraft navigation with reduced errors and reduced risk, but require at
least some long (thousands of km) baselines.

16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th