precision ag tophat quizzes

Which form of DGPS is the only correction method that can provide repeatable sub-inch accuracy?

RTK

a combine that has a PDOP of 6 would have satellites

close together

There are no free sources of differential correction.

False

This piece of information tells the GPS receiver which satellite it is communicating with.

PRC

What are we MEASURING with a GPS receiver?

Time

What interprets the satellite information and calculates the GPS information?

receiver

Galileo

EU

BeiDou

China

The GPS system consists of the space segment, user segment, and the_____ segment. 

control

Static accuracy is always equal to pass-to-pass accuracy. 

False

The magnitude of GPS drift is dependent on the correction service used. 

True

When using a wide area differential correction source, a base station is not required. 

False

Common statistical terms relating to mobile GPS accuracy are ____ and ____. These are equivalent to one standard deviation and two standard deviations. 

RMS, 2DRMS, OR one-sigma, 2-sigma

CEP is a measure of stationary GPS accuracy and is defined as the smallest radius circle which will include ____ percent of the computed GPS positions. 

50%

The intentional degradation of public GPS signals for national security reasons is known as

selective availability

A minimum of ____ satellites is required to determine a position using GPS.

4

The GPS system consists of the space segment, user segment, and the

control

Which of the following sprayer control systems would have the smallest amount of overapplication?

one with the most sections

Which of the following operations would use point guidance?

crop scouting

What is the minimum update rate (Hz) required for guidance systems?

5

An position update rate of 10 Hz means that position is being calculated

10 times every second