![]() While one memory is transferring data from/to the shared memory, the other is supplying the core processor with data. introducing two small programmable fast memories (Twins) between the processor and the shared bus interconnect. This significant enhancement is achieved by. The proposed architecture can effectively support 32 DSPs in contrast to a maximum of 4 DSPs supported by existing DSP-based bus-interconnected systems. This dissertation introduces, investigates, and evaluates a low-cost high-speed twin-prefetching DSP-based bus- interconnected shared-memory system for real-time image processing applications. The Orthophoto image could provide visual interpretation such as the individual trees structure, plant density, and parcel boundary area, while DEM could asses tree's height information and terrain topography with accuracy 3-6 pixel or 0.5-2.5 m. The Average geometric accuracy can be obtained up to 3 pixels or equivalent to sub-meter accuracy, while the production time can be reached more than 500Ha a day. The basic products of the system are Orthophoto Image and Digital Elevation Model (DEM). This system has the ability to produce imagery with spatial resolution <10 cm, measuring parcel area, assess the individual trees or plants stock, and topography. The system consists of aerial platforms from R/C plane, point and shoots digital cameras, data processing with digital photogrammetric: structure from motion algorithms, and free open source-GIS for visualizing. So, the UAV-Based remote sensing system should have characteristics such as cost-effective, fast in producing, easy in operation by local staff, and good geometry accuracy (sub-meter). Some of the information for land preparation, cadaster boundary, vegetation monitoring, plant healthy, and stock valuation are required periodically. This paper shows some practical experiences of using Unmanned Aerial Vehicle-(UAV) based platform for remote sensing in supporting precision agriculture mapping. This design method, therefore, will contribute to the application of holonomic vehicles due to the realization of holonomic functionality and simplicity. Further, the construction method is simple and can satisfy the accuracy requirement. This study is the first attempt to apply air-based propulsion to a land-based holonomic vehicle. Simulation results showed that with the increase of propulsion efficiency, the velocity can achieve more than 5 m/s if the efficiency is 70%. The prototype can move at a velocity of approximate 0.558 m/s with an efficiency of 18.55%. For the establishment of the methodology, the data, including propeller size, rotation per minute, velocity, thrust, efficiency, etc., were measured or calculated. ![]() Only two motors were applied, one for propeller rotation and the other for the adjustment of the angle of thrust. A prototype with three roller balls was developed with a propeller for the propulsion of a triangular holonomic vehicle. Air-based propulsion was applied to a land-based holonomic vehicle. This paper aims to present the design and construction of a novel holonomic mechanism to simplify the system. For such a system, more driving motors and precise transmission mechanisms are necessary, which makes the control and fabrication complicated. Holonomic vehicles with wheels such as ball wheels can move in any direction without rotating. Results show that the new medium range UAV concept can be applied to realize long endurance flight. Flight tests were successful and UAV performance was confirmed. Wing structure strength was analyzed, and then the engine–propeller configuration for UAV power generation was selected. Aerodynamic performance analysis of the wing was conducted using a four method calculation to obtain the design configuration. A pusher high wing twin boom aircraft was chosen because of its better stability. In this study, the design activities included comparing to an existing aircraft to determine the initial sizing for the UAV. The aircraft was designed with a wing span of 5.5 meters and payload capacity of 30 kg, considered to be an optimum solution for aerial photography. Development activities of medium range of UAV have been conducted at LAPAN (National Institute of Aeronautics and Space). UAV based remote sensing for supporting environmental forestry planning, ecosystem preservation, and agricultural planning in Indonesia are very potential.
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