RTK Protocol Choices Give You More Options

April 7, 2011
You may hear the term “protocol” or “standard protocol” mentioned when talking about RTK corrections and receivers. It might be easy to think of protocol as a type of “data language” that is used to transfer the correction data from the base station to your receiver. “Standard protocol” refers to the use of an industry standard language, meaning that different manufacturers may work with each other because their RTK equipment is all speaking the same language, or “protocol”. MyWay RTK utilizes standard protocols in order to send RTK corrections to all of the equipment that is capable of interpreting such messages, thereby making it open source, because the message is available to any receiver that is capable of receiving and understanding those messages.

MyWay RTK is offering two different types of message protocols in order to be compatible with as many different RTK systems as possible. Older RTK receivers, often times referred to as “Legacy” equipment, most commonly use what is known as CMR or CMR+ protocol. This message type transfers smaller bits of information, and only transfers corrections from GPS satellites. Newer equipment, capable of GPS and GLONASS corrections, needs a message that can handle more data bits when there is more information to be transferred. This “newer” protocol is known as RTCM 3.0.

MyWay RTK offers both CMR+ and RTCM 3.0 mount points for use with various types of equipment. These two protocols will cover nearly all of the various RTK receivers on the market that will accept “standard protocols”. Equipment that will not accept these messages use what is known as a “proprietary protocol”, meaning they will only work with base stations produced by the same manufacturer as the receiver. The choice of two mount points with two different protocols gives you more options and is just another way that MyWay RTK is striving to be the leader in open source, brand neutral RTK corrections.