Leica Geosystems Gps Basics User Manual

• Leica Geosystems Manuals
• Handheld Gps Basics
• Gps Basics Pdf
• Leica Geosystems Download
• Leica Geosystems Gps Basics User Manual Pdf

45

GPS Basics -1.0.0en

Surveying with GPS

The present copy of the manual has been adjusted for the use on any site using a Leica RX1250XC GPS without a backpack. The manual is written in such manner that it can easily be adjusted for individual sites' survey requirements. Chapters can be extracted easily and supplied individually. Leica RoadRunner Technical Reference Manual Purchase. Congratulations on the purchase of a. Please refer to the detailed safety directions in the User Manual. The type and serial number in your manual and always refer to this information when you need to contact your agency or Leica Geosystems authorized service workshop.

5.1.4 RTK Surveys

RTK stands for Real Time Kinematic. It

is a Kinematic on the Fly survey carried

Leica Geosystems Manuals

out in real time.
The Reference Station has a radio link

attached and rebroadcasts the data it

receives from the satellites.
The Rover also has a radio link and

receives the signal broadcast from the

Reference. The Rover also receives

satellite data directly from the satellites

via it’s own GPS Antenna. These two

sets of data can be processed together

at the Rover to resolve the ambiguity and

therefore obtain a very accurate position

relative to the Reference receiver.
Once the Reference Receiver has been

set up and is broadcasting data through

the radio link, the Rover Receiver can be

activated.
When it is tracking satellites and receiv-

ing data from the Reference, it can begin

the initialization process. This is similar

to the initialization performed in a post-

processed kinematic on the fly survey,

the main difference being that it is

carried out in real-time.

Audi a4 2013 user manual pdf. Once the initialization is complete, the

ambiguities are resolved and the Rover

can record point and coordinate data. At

this time, baseline accuracies will be in

the 1 - 5cm range.
It is important to maintain contact with

the Reference Receiver, otherwise the

Rover may lose the ambiguity. This

results in a far less accurate position

being calculated.
Additionally, problems may be encoun-

tered when surveying close to obstruc-

tions such as tall buildings, trees etc. as

the satellite signal may be blocked.
RTK is quickly becoming the most

common method of carrying out high

precision, high accuracy GPS surveys in

small areas and can be used for similar

applications as a conventional total

station. This includes detail surveying,

stakeout, COGO applications etc.

The Radio Link
Most RTK GPS systems make use of

small UHF radio modems. Radio

communication is the part of the RTK

system that most people experience

difficulty with. It is worth considering the

following influencing factors when trying

to optimize radio performance:
1. Power of the transmitting radio.

Generally speaking, the more power, the

better the performance. However, most

countries legally restrict output power to

0.5 - 2W.
2. Height of transmitter antenna. Radio

communication can be affected by line of

sight. The higher up you can position the

antenna, the less likely you are to get

line of sight problems. It will also

Handheld Gps Basics

increase the overall range of radio

communication. The same also applies

to the receiving antenna.
Other influencing factors affecting

performance include the length of the

cable to radio antenna (longer cables

mean higher losses) and the type of

Gps Basics Pdf

radio antenna used.

Leica Geosystems Download

Leica Geosystems Gps Basics User Manual Pdf