GNSS multipropósito de bajo coste. Procesado Open Source como alternativa viable en procesos de producción cartográfica

Abstract

The GNSS positioning has been implemented in the daily life of the human being, in any sector of society, from the geometer who needs your rover to position the base from which will conduct a survey to land registry as the shepherd who is monitoring his flock thanks to the positioning system and leading 3G modem in your ram necklace. This is a reality, with all its consequences. Recently it coined the concept of "socialization of precision" with the arrival on the market of low cost systems, both hardware and software, allowing approach methodologies to different areas of application. One of the areas where it is having a great reception this concept is in the RPAS, driven by work groups protected under various licenses of Open Source and Open Hardware. With this line of work we have tried to show that the current state of development of various projects related to existing permit precise positioning and work optimally with delays and costs which could compete directly with existing commercial tools Open Source. It should be stressed that we are living a crisis situation that requires optimization of both public and private resources with the aim of trying to reduce costs or properly amortize the investment. In this work we have performed certain tests in order to develop a methodology daily work that allows the use of equipment "Low-Cost" along with free software, a union that can be very productive (for now) from an operational point of view but it performs the function for which it is being used, ie produce precision mapping according to the scale required. It has attempted to determine the accuracy attainable with such combinations, thanks to test different scenarios GNSS conventional devices, urban canyons, vegetation, clear skies, cinematic paths or static positioning (RTK or post-processing). As a final result is concluded that it is important not to focus solely on the GNSS receiver but the full set of equipment as well as in the positioning method used, linked mainly to the type of communications that we have and the work environment .