Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Real-time Magnetometer Disturbance Estimation via Online Nonlinear
  Programming   Magnetometer is a significant sensor for integrated navigation. However, it
suffers from many kinds of unknown dynamic magnetic disturbances. We study the
problem of online estimating such disturbances via a nonlinear optimization
aided by intermediate quaternion estimation from inertial fusion. The proposed
optimization is constrained by geographical distribution of magnetic field
forming a constrained nonlinear programming. The uniqueness of the solution has
been verified mathematically and we design an interior-point-based solver for
efficient computation on embedded chips. It is claimed that the designed scheme
mainly outperforms in dealing with the challenging bias estimation problem
under static motion as previous representatives can hardly achieve.
Experimental results demonstrate the effectiveness of the proposed scheme on
high accuracy, fast response and low computational load.

8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
2
The categories of this paper are: math