Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Range Estimation of a Moving Target Using Ultrasound Differential
  Zadoff-Chu Codes   High accuracy range estimation is an essential tool required in many modern
applications and technologies. However, continuous range estimation of a moving
target is a challenging task, especially under Doppler effects. This paper
presents a novel signal design, which we name differential Zadoff-Chu (DZC).
Under Doppler effects, DZC sequences improve the performance of the maximum
likelihood (ML)-based range estimation compared to its performance when using
regular ZC sequences. Moreover, a reduced-complexity ranging algorithm is
proposed utilizing DZC sequences and is shown to outperform the regular ZC
ML-based range estimation. The proposed system is evaluated in a typical indoor
environment, using low-cost ultrasound hardware. Under a low signal to noise
ratio (-10 dB SNR), more than 90% of the range estimates are in less than 1.6
mm error, with a movement range from $0.2$ m to 2.2 m and a maximum velocity of
0.5 m/s. For the same movement range, the system provides range estimates with
a root mean square error (RMSE) less than 0.76 mm in a high SNR scenario (10
dB), and an MSE less than 0.85 mm in a low SNR scenario (-10 dB). For a larger
movement range from 1.8 m to 4.2 m with a maximum velocity of 1.91 m/s, the
proposed system provides range estimates with RMSE less than 7.70 mm at 10 dB
SNR.

29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
2
The categories of this paper are: math
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph