Table 2 Technical parameters of hyperspectral instrument.

From: Visible-NIR hyperspectral classification of grass based on multivariate smooth mapping and extreme active learning approach

Index

Parameter

Spectrometer detector model

Andor Luca

PTZ/scanner serial port number

COM4

PTZ/scanner type

DP PTU-D48E

Spectral range/nm

400–1000

Number of spectral channels

750

Pixel mixing times

6

Band number

125

Spectral resolution/nm

4.8

Average times

3

Time of exposure/ms

12

Horizontal angle (°)

2.4

Tilt angle (°)

− 8.4

Starting angle (°)

− 15

Scan length (°)

30

Scanning step (°)

0.02

Number of scans

1499