Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical flow GNSS for navigation in the Indian subcontinent (NavIC)   This paper reveals about global navigation satellite system GNSS in the
indian subcontinent known as the navigation in the indian subcontinent(NavIC)
We have tried to model a new technique in GNSS known as the optical flow
tracking global navigation system (OF GNSS). This method using differential
equations is very accurate for very small distances on the surface of the earth
in the 1500km range of the Indian subcontinent satellite coverage. When we talk
of accuracy of the GPS system it should be very accurate on the surface of the
earth when used to show changes in coordinate of the moving body with respect
to the ground by the satellite which is situated on the earths orbit. Optical
flow is a method which uses movements with respect to x and y axis for
infinitesimal changes in its coordinates and then uses this algorithm to use it
in global positioning system to find accurate position of the body with respect
to the satellite coordinates with respect to ground positioning. The modern
method of differential frames is also very accurate as it involves
infinitesimal frames which are modelled together from the satellite to find
changes in the coordinates on the earths surface, so we have designed a new
algorithm in this paper on the Optical flow GNSS system which is an alternative
and can improve the study done in the design of these algorithms in this field
of applications.

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The categories of this paper are: supr-con
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
14
The categories of this paper are: math-ph