Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fixed-Gain Augmented-State Tracking-Filters   A procedure for the design of fixed-gain tracking filters, using an
augmented-state observer with signal and interference subspaces, is proposed.
The signal subspace incorporates an integrating Newtonian model and a
second-order maneuver model that is matched to a sustained constant-g turn; the
deterministic interference model creates a Nyquist null for smoother track
estimates. The selected models provide a simple means of shaping and analyzing
the (transient and steady-state) response of tracking-filters of elevated
order.

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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
2
The categories of this paper are: math
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg