Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Proportional navigation."”.
-
Proportional navigation target tracking
… is desired. Because most anti-ship missiles use proportional navigation in their guidance systems, it is best to model their motion using the proportional navigation guidance law. An unbiased narrowband filter is required because the state estimate is used to extrapolate the trajectory over the …
-
Three-Dimensional, Vision-Based Proportional Navigation for UAV Collision Avoidance
… avoidance system is based on the principle of proportional navigation (Pro-Nav), which states that a collision will occur when the line-of-sight (LOS) angles to another object remain constant. According to this guidance law, monocular electro-optical devices can be implemented on Unmanned …
-
Collision Avoidance and Navigation of UAS Using Vision-Based Proportional Navigation
… guidance laws are based on the principle of proportional navigation (Pro-Nav), which states that a UAV is on a collision course with another vehicle or object if the line-of-sight (LOS) angles to the object remain constant. The guidance laws are designed for use with monocular electro-optical …
-
Integration of potential field theory and proportional navigation theory to autonomously guide an unmanned aerial vehicle.
… typically used for obstacle avoidance, and proportional navigation, a popular missile guidance algorithm. The new algorithm modifies the old algorithms to allow a UAV to track an optimal path to, and rendezvous with, a moving target while avoiding obstacles in its path. A model for a quad …
-
Optimal and near-optimal medium range air-to-air missile guidance against maneuvering targets
… Modifications in terminal guidance using proportional navigation, such as chasing the center-of-attainability of target, altitude shaping, and drag-resolution schemes are used to attempt better performance at intercept. A composite guidance strategy using a combination of neighboring …
-
Optimal evasion against a proportionally guided pursuer
… when the pursuer is known to employ fixed gain proportional navigation. The performance index is a measure of closest approach. The analysis is done for planar motions at constant speed. The kinematics are first linearized around a nominal collision course. The dynamics of the opponents are …
-
Visual Adaptations and Behavioural Strategies to Detect and Catch Small Targets
… trajectories in keeping with the guidance law of proportional navigation, an algorithm derived for modern guided missiles. There are key differences evident in the internal physiological constants applied to the control system between the species. These differences are likely linked to the …
-
Trajectory design and vehicle guidance for a mid-air rendezvous between tow autonomous aircraft
… the vehicles are explored and the adaptation of Proportional Navigation for PCUAV is discussed. Finally, the synchronization required to bring the two vehicles in trail and 15m from each other is explained. Flight test results validating this work are also presented.
-
Avionics and control system development for mid-air rendezvous of two unmanned aerial vehicles
… aircraft guidance method in waypoint navigation. A simple, low-order attitude estimation was developed that combines aircraft kinematics, GPS and low-quality rate gyros. It is demonstrated in simulation that the performance of the proposed method is as good as other advanced complex …
-
Suboptimal period design for a maneuvering missile to evade tracking filters
… is investigated. The missile is equipped with proportional navigation guidance for homing in on its ship target. The ship’s defense system consists of a radar, an estimation system (the extended Kalman filter and the “jump filter” are used), and a gun system. The performance index is defined as …
-
Three Enabling Technologies for Vision-Based, Forest-Fire Perimeter Surveillance Using Multiple Unmanned Aerial Systems
The ability to gather and process information regarding the condition of forest fires is essential to cost-effective, safe, and efficient fire fighting. Advances in sensory and autopilot technology have made miniature unmanned aerial systems (UASs) an important tool in the acquisition of …
-
General Vector Explicit - Impact Time and Angle Control Guidance
This thesis proposes and evaluates a new cooperative guidance law called General Vector Explicit - Impact Time and Angle Control Guidance (GENEX-ITACG). The motivation for GENEX-ITACG came from an explicit trajectory shaping guidance law called General Vector Explicit Guidance (GENEX). GENEX …