I have already taken these toys out of the box, in One week we will do a training to see how it works. For now, I have barely seen the videos and some of their attributes.
Predecessors of the Promark 3.
In this same line, there were previously and there are the last:
- The Mobile Mapper Pro, a nice toy that walked for US $ 1,500, and that with postprocessing achieved sub-meter precisions. It could be base and also rover. Currently it is discontinued; It was annoying that the card was unconfigured when it started, perhaps because of a virus, perhaps because of an error after the strike of the company's employees.
- The Mobile Mapper CX, this is an improved version of the Pro, with an antenna can be used as geodetic GPS. He had a relative called CE, who ran on Windows CE, and as I have heard, this CX does not present the headaches of that.
- The Mobile Mapper 6, This is a new line, I have spoken of this on several occasions. More or less is equivalent to Juno of Trimble, although it exceeds in precision. It can not be base, only rover and in real time is a click navigator with precisions from 3 to 5 meters.
What's new with the PM3
This brings functionality similar to Pro and CX, unlike the 6 that brings the Mobile Mapping, camera, compass and more pickets. For those of us who try the Pro, it is very simple because the way of operating is the same, simplifying many steps in the menu, which added the keyboard and touch screen makes it more productive. Supports RTK reception and stakeout, I'm not sure if it supports other applications, like ArcPad, that the MM6 can do. Of course, the capabilities of the software that you bring (Fast Survey) do not compare with Mobile Mapping, in terms of configuration, display of points and other headaches.
Just like the Pro, it can be base or rover, it is bought in pairs and comes in a practical canvas bag. Each one includes an antenna, in real time it obtains submetric precisions (what the pro did with postprocess). Leaving one of base can give centimetric precisions, also these basic data would cause that the MM6 arrives at submétricas as it was shown in the exercise previous.
Among the accessories is an adapter to place it on a tripod, another to support it on a cane and also a band to fix it on the hand; a tape measure to take the height of the antenna, an adapter for different forms of USB / Serial connectivity. Among other things, a cable for the antenna, various adapters for current, SD card and individual waterproof bag.
The battery is of lithium, with many more hours of duration, surpassing the predecessors that used AA; in the purchase of the pair comes a bar that is useful to place them in similar conditions when working in a "stop and go" manner. They bring the software to do post-processing Mobile Mapper Office, 3.4 version that already supports raster data, interaction with Mapinfo data, shp, dxf and csv; also another desktop application known as GNSS solutions, which includes survey planning capabilities. This last application has a very practical inerface, with drag and drop options, reports and isometric deployment.
Of the best in accessories, the DVD with videos in Spanish, with seeing it you can save yourself reading a lot and understand in a practical way how it works; although the manual is very useful too. The video is ideal for training, among them a section that explains how satellite constellations work and aspects that affect reception. It also includes the topics:
- Presentation of the team
- Initial setup
- Introduction to the operation of GPS
- How to do static lifting
- Lifting "stop and go" and kinematics
- Field survey software
- Using the Mobile Mapper Office and Other Office Software
- Capturing and managing GIS data
In prices, it depends on the local vendor, so I consulted in my environment, the Mobile Mapper Pro walked for US $ 1,500, the MM6 walks in less than 1,200 and Promark3 near the $ 6,000 pair. Not bad if you consider that you can reach centimetric accuracies, other brands do not offer equipment like that for this price.
If I had to compare it with another computer, it could be said that it is almost like Trimble GeoXH, Although they are not exactly equivalent.
Let's do a course this weekend with the guys from the total station and some friends interested in learning for free. We are interested in trying some aspects such as:
- Which precisions are under similar conditions with the available equipment in the municipalities: MMPro and MM6, comparing with the RTK of two Promark3.
- What precisions can be reached in real time and how functional it would be to start under similar conditions the Garmin Legend in properties greater than 3 hectares.
- That loss of accuracy is at distances: 100 meters, one, three and 6 kilometers.
At the same time, once and for all we will try some distance meters that, in my opinion, could replace the Suunto compasses if it is triangulated enough, in urban areas. Based on the tests we will decide how to optimize the effort in the rural survey that will take us from June to September.
We'll see how it goes.