Precision Farming" Application: Gps Receiver Setup; Introduction - Case IH AFS Pro 700 Software Operating Manual

"PRECISION FARMING" APPLICATION: GPS RECEIVER SETUP

Introduction

This chapter continues information on the "Precision Farming" application and explains the "GPS Setup" screen (Home
> Toolbox > GPS).
Your GPS receiver supports a variety of signal correction technologies. The two primary measures of accuracy are:
• Pass-to-pass accuracy - Pass-to-pass accuracy measures the relative accuracy over an interval of 15 min. For
example, pass-to-pass accuracy of +/- 10.2 cm (4.0 in) means that 95 % of the time there will be less than 10.2 cm
(4.0 in) of skip or overlap from one field pass to the next.
• Year-to-year accuracy - Year-to-year accuracy is the measure of repeatable accuracy a day, a week, a month, or
even a year later. For example, year-to-year accuracy of +/- 2.5 cm (1.0 in) means that 95 % of the time a row that
you drive next year will be within 2.5 cm (1.0 in) of the same row this year.
The following tables describe each signal correction technology in terms of accuracy, ranging from broad accuracy to
high accuracy. Contact your CASE IH dealer to determine which technology is best for your operating conditions.
Accuracy Technology
WAAS/EGNOS
OmniSTAR® VBS
Broad
RangePoint™ RTX™¹
¹ Technology requires an AFS 372 GNSS receiver
3 - SETUP
Pass-to-pass Year-to-year
accuracy accuracy
15.2 - 20.3 cm < 1.0 m
(6.0 - 8.0 in) (39.4 in)
15.2 - 20.3 cm 50.8 cm
(6.0 - 8.0 in) (20.0 in)
15.2 - 20.3 cm 50.8 cm
(6.0 - 8.0 in) (20.0 in)
3-33
Convergence
time
< 1 min Available without
subscription
< 1 min
Appropriate for:
• operators who desire a
quick start-up time and
don't need the highest
level of accuracy or
repeatability
• Broadacre crop spraying,
tillage applications, and
other applications in which
accuracy and repeatability
are not critical
1 - 5 min • Entry-level correction
service that is available
in regions where Satellite
Based Augementatoni
System (SBAS) correction
options such as EGNOS,
WAAS, and OmniSTAR®
are not readily accessible
• Does not require additional
receivers, modems, or
data plans
Description