Joshua Tristancho

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Femto-satellites are very small satellites weighing less than 100 grams and by concept they are low cost. These kinds of satellites are very often based on the so called Commercial-Of-The-Shelf components. They are suitable for applications with low budget and with short time of development. The satellite remains in a Low Earth Orbit (LEO) of 250 kilometers(More)
Femto-satellites are satellites with a mass lower than 100 grams. These new categories of satellites are, by concept, low cost devices if they are based on Commercial-of-the-Shelf (COTS) components. Some examples of applications are related to low-cost missions with short time of development. In addition, if they use Low Earth Orbits like 250 kilometers,(More)
A complete optical wireless interface for the ARINC 429 avionics bus has been presented as part of this paper. After evaluating the previous results, we conclude that the described system complies with all electrical and timing restrictions imposed by the ARINC 429 specification, ensuring the compatibility with such avionics bus.
There are physical spaces and infrastructure environments in which conventional radio-frequency (RF) wireless systems can result in hazardous conditions due to the intrinsic risk of producing high levels of electromagnetic interference (EMI), which can affect sensitive electronic equipment placed in proximity of such high energy RF sources. Two good(More)
An Unmanned Aerial Vehicle, UAV for short, is able to fly autonomously during all phases of flight, but has to be monitored from an operator station. In this article a better avionic system is proposed to optimize this process reducing the channel usage without quality degradation. The information related to the aircraft position is called telemetry. This(More)
Commercial-Of-The-Shelf is an adjective that describes software or hardware products that are ready-made and available for sale to the general public. These products were not designed initially for aerospace environment. Femto-satellites, a very promising new category of satellites, with a less than 100 grams mass. They are, by concept, low cost devices. A(More)
Synthetic Vision Systems (SVS) provide a computer-generated depiction of the environment according to aircraft flight path and attitude. In the case of Remotely-Piloted Aircraft (RPA), SVS improve dramatically operator situation awareness under reduced visibility conditions due to environment related issues and/or video data link degradation. Even though at(More)
This paper presents a telemetry compression algorithm for Unmanned Aerial Vehicles (UAV) based on high level abstraction. A typical communication channel usage is not optimized when it is used for telemetry because it requires persistent communications to the ground station. This method spends large bandwidth in the communication channel having an(More)
In this paper some results of the study group of the Team FREDNET is presented, which designs a lunar rover for an open source mission to the Moon within the Google Lunar X-Prize (GLXP). Team FREDNET (TFN) is an open source non-profit program that combines the talents of scientists, engineers, and technologists to create a viable solution for the continued(More)
Current and future air traffic is requiring new procedures and systems to achieve a greater automation and efficiency of the air traffic operations. On controlled air space and airports, centralized ATC support the real time complexity of air traffic management. But on non-controlled aerodromes, used mainly by general aviation, the absence of ATC support(More)