Infrared video tracking of UAVs: Guided landing in the absence of GPS signals

Master's Project (M.S.) University of Alaska Fairbanks, 2019Unmanned Aerial Vehicles (UAVs) use Global Positioning System (GPS) signals to determine their position for automated flight. The GPS signals require an unobstructed view of the sky in order to obtain position information. When inside without a clear view of the sky, such as in a building or mine, other methods are necessary to obtain the relative position of the UAV. For obstacle avoidance a LIDAR/SONAR system is sufficient to ensure automated flight, but for precision landing the LIDAR/SONAR system is insufficient for effectively identifying the location of the landing platform and providing flight control inputs to guide the UAV to the landing platform. This project was developed in order to solve this problem by creating a guidance system utilizing an infrared (IR) camera to track an IR LED and blue LEDs mounted on the UAV from a RaspberryPI 3 Model B+. The RaspberryPI, using OpenCV libraries, can effectively track the position of the LED lights mounted on the UAV, determine rotational and lateral corrections based on this tracking, and, using Dronekit-Python libraries, command the UAV to position itself and land on the platform of the Husky UGV (Unmanned Ground Vehicle)

Research into the feasibility of thin metal and oxide-film capacitors Final technical report

Feasibility of producing thin metal and oxide- film capacitors with stable electrical properties in high temperature environment

Graphite/Larc-160 technology demonstration segment test results

A structural test program was conducted on a Celion/LARC-160 graphite/polyimide technology demonstration segment (TDS) to verify the technology. The 137 x 152 cm (54 x 60 in.) TDS simulates a full-scale section of the orbiter composite body flap design incorporating three ribs and extending from the forward cove back to the rear spar. The TDS was successfully subjected to mechanical loads and thermal environments (-170 to 316 C) simulating 100 shuttle orbiter missions. Successful completion of the test program verified the design, analysis, and fabrication methodology for bonded Gr/PI honeycomb sandwich structure and demonstration that Gr/PI composite technology readiness is established

Certiorari as Used by the Supreme Court in the Interest of Harmony of Opinion and Uniformity of the Law

It is not my purpose to discuss the writ of certiorari in general, but only such writ as used by the Supreme Court and as directed to the several Courts of Appeals in the interest of harmony of the case law of the state. But whilst this is the purpose I have in mind, yet some general thoughts are not inappropriate. In Missouri we have no general statutes covering the subject of certiorari, as we have covering prohibition, mandamus, habeas corpus and quo warranto. In most respects we use the writ as recognized at common law, and it is no doubt true that when the constitution of 1875, sec. 3 of art. VI, speaks of certiorari, it was used in the common law sense of that term. In many states, by statute the old common law writ has been curtailed, and in others enlarged. And in England Acts of Parliament have changed in some things the old common law certiorari

COMMERCIAL SWEETPOTATO PRODUCTION IN MISSISSIPPI

This report provides an estimate of selected costs incurred in sweetpotato production in Mississippi, 1999. Land, management and general farm overhead costs were not included. Per acre returns above specified costs are estimated at approximately $1,100.00 per acre.sweetpotatoes, production costs, net returns, cash flow, price sensitivity, equipment, chemicals, Production Economics,

(SNP068) Louis Graves interviewed by Reed Engle, transcribed by Joy K. Stiles

Records an interview with Louis Graves, who grew up in Madison County, Virginia, not far from the site where President Herbert Hoover would construct a rustic retreat known as Rapidan Camp, and later as Camp Hoover. Hoover paid for the project out of his own funds and the camp was constructed by a detachment of U.S. Marines as a military exercise by March, 1929. Louis Graves recalls speeches given by President Hoover and other dignitaries in Madison, Va., as part of a day-long Hoover Day celebration on August 9, 1929. Graves relates that more than 10,000 people attended the event, including Virginia governor Harry F. Byrd, who arrived at the celebration aboard an Army reconnaissance blimp. Includes a discussion of the economic situation in Madison County in 1929, during a time of prolonged drought and at the onset of the Great Depression. There is no audio recording for this interview; interview consists of transcript only.https://commons.lib.jmu.edu/snp/1123/thumbnail.jp