Global Positioning System Denied Navigation of Autonomous Parafoil Systems Using Beacon Measurements From a Single Location

2017 ◽  
Vol 140 (4) ◽  
Author(s):  
Martin R. Cacan ◽  
Mark Costello ◽  
Edward Scheuermann
Keyword(s):  
Global Positioning System ◽  
Autonomous Vehicles ◽  
Positioning System ◽  
Signal Jamming ◽  
Package Delivery ◽  
Single Location ◽  
Global Positioning ◽  
Urban Terrain ◽  
Single Radio ◽  
And Control

Precision-guided airdrop systems have shown considerable accuracy improvements over more widely used unguided systems through high-quality position, velocity, and time feedback provided by global positioning system (GPS). These systems, like many autonomous vehicles, have become solely dependent on GPS to conduct mission operations. This necessity makes airdrop systems susceptible to GPS blackout in mountainous or urban terrain due to multipathing issues or from signal jamming in active military zones. This work overcomes loss of GPS through an analysis of guidance, navigation and control (GNC) capabilities using a single radio frequency (RF) beacon located at the target. Such a device can be deployed at the target by ground crew on site to retrieve package delivery. Two novel GNC algorithms are presented, which use either range from or direction to a RF beacon. Simulation and experimental flight testing results indicated that beacon-based methods can achieve similar results as GPS-based methods. This technology provides a simple and elegant solution to GPS blackout with best method studied showing only a 21% decrease in landing accuracy in comparison to GPS-based methods.

Trail Blazer into Space

2000 ◽  
Vol 122 (10) ◽  
pp. 71-74
Author(s):  
Frank Wick
Keyword(s):  
Cold War ◽  
Global Positioning System ◽  
Space Vehicles ◽  
Positioning System ◽  
Information Revolution ◽  
United States Military ◽  
Post Cold War ◽  
Global Positioning ◽  
The Cold War ◽  
And Control

This article reviews that from the Cold War to Voyager, the work of Robert Goddard has received much recognition. Independently, Goddard started conceiving and designing a variety of air and space vehicles, and analyzing methods for propulsion and control. In 1903, Wilbur and Orville Wright had achieved powered flight with the three-axis control they had invented, but the flying machine was extremely difficult to manage. In 1907, while he was still an undergraduate, Goddard studied the dynamics of the Wright Flyer, and designed a gyroscope-based stabilizer for automatic control. His attempts to procure government funding were rejected by a United States military that did not recognize any value of rockets beyond the possibility of assistance at takeoff for aircraft. Rockets increasingly are supporting the marvels of our post-Cold War information revolution. The satellite-based Global Positioning System has brought the most sophisticated navigation system into the personal automobile. Within the century, Robert Goddard’s vision and life’s work begat far more than he could have imagined.

Low cost automation using INS/GPS data fusion for accurate positioning

Robotica ◽  
2003 ◽  
Vol 21 (3) ◽  
pp. 255-260 ◽  
Author(s):  
J. Z. Sasiadek ◽  
Q. Wang
Keyword(s):  
Kalman Filter ◽  
Global Positioning System ◽  
Autonomous Vehicles ◽  
Low Cost ◽  
Real Time Control ◽  
Adaptive Kalman Filter ◽  
Time Control ◽  
Global Positioning ◽  
And Control ◽  
Fuzzy Adaptive

Low cost automation often requires accurate positioning. This happens whenever a vehicle or robotic manipulator is used to move materials, parts or minerals on the factory floor or outdoors. In last few years, such vehicles and devices are mostly autonomous. This paper presents the method of sensor fusion based on the Adaptive Fuzzy Kalman Filtering. This method has been applied to fuse position signals from the Global Positioning System (GPS) and Inertial Navigation System (INS) for the autonomous mobile vehicles. The presented method has been validated in 3-D environment and is of particular importance for guidance, navigation, and control of mobile, autonomous vehicles. The Extended Kalman Filter (EKF) and the noise characteristic have been modified using the Fuzzy Logic Adaptive System and compared with the performance of regular EKF. It has been demonstrated that the Fuzzy Adaptive Kalman Filter gives better results (more accurate) than the EKF. The presented method is suitable for real-time control and is relatively inexpensive. Also, it applies to fusion process with sensors different than INS or GPS.

scholarly journals Outdoor Localisation for Navigation Tracking using Differential Global Positioning System Estimation (DGPS) : Positioning Errors Analysis

Mekatronika ◽  
2019 ◽  
Vol 1 (2) ◽  
pp. 103-114
Author(s):  
Wi Kang Chew ◽  
Muhammad Aizzat Zakaria
Keyword(s):  
Global Positioning System ◽  
Autonomous Vehicles ◽  
Reference Station ◽  
Positioning System ◽  
Positioning Accuracy ◽  
Dilution Of Precision ◽  
Positioning Errors ◽  
Global Positioning ◽  
Errors Analysis ◽  
Differential Global Positioning System

Global Positioning System (GPS) is a very popular outdoor positioning system. Due to the satellites’ errors signal, the Global Positioning System (GPS) receivers determine the accuracy of a current location with about 100 meters in latitude and 156 meters in longitude. In this few years, the technology on autonomous vehicles is rising. Autonomous vehicles need to navigate with high positioning accuracy for preventing any potential danger to road user. So in this paper, Differential Global Positioning System (DGPS) experiment will be introduced for improve the positioning accuracy. Differential Global Positioning System (DGPS) operations compose of Reference Station and Rover Station. Both of the station will use the GPS receiver for receiving the positioning data from GPS satellites and the positioning data collected from Reference Station will be used to calculate the positioning errors and the errors correction will then be transferred to Rover Station to improve the positioning accuracy. The results obtained will be discussed based on the average and range of errors in both latitude and longitude, number of satellites detected, Horizontal Dilution of Precision (HDOP), Vertical Dilution of Precision (VDOP) and the improvement on Differential Global Positioning System (DGPS) at the same time in different day. In four days’ results, it can be seen that the number of satellites detected will be affected by the Horizontal Dilution of Precision (HDOP) and Vertical Dilution of Precision (VDOP) which cause the positioning errors in latitude and longtitude. The average of positioning errors range between -4.165m and 2.925m in latitude and -0.618m and 1.998m in longitude.

scholarly journals Implementasi Aplikasi Berbasis Teknologi IoT pada Perangkat Tracking dan Kendali Kendaraan Bermotor

2020 ◽  
Vol 1 (2) ◽  
pp. 57-64
Author(s):  
Ade Irma ◽  
Nasron ◽  
Martinus Mujur Rose
Keyword(s):  
Internet Of Things ◽  
Global Positioning System ◽  
Positioning System ◽  
Motor Vehicle Theft ◽  
Vehicle Theft ◽  
Internet Connection ◽  
Keywords Internet ◽  
Global Positioning ◽  
Tracking Device ◽  
And Control

The increasing use of vehicles, especially motorbikes, has the potential to increase motor vehicle theft cases. The increase in motorcycle theft cases can occur due to the weakness of the owner in installing a motorcycle security system, so that it has the potential to experience losses due to theft. An indication of the problem is how to develop an application that can be used to carry out tracking that can display the position of the vehicle with integrated maps and vehicle control remotely in the event of a vehicle theft. The development of Internet of Things (IoT) technology as well as information and communication technology can now be used to develop an application for wireless vehicle monitoring and control. So that it can make it easier for vehicle owners to track and control the vehicle to minimize vehicle loss. In this study using MIT App Inventor as an application development platform and using ThingSpeak as an IoT database server. Furthermore, the application will be integrated with the Tracking Device device consisting of a microcontroller, Global Positioning System (GPS) module, and a DC relay installed on the vehicle, utilizing an internet connection as a link between the application and the tracking device. The result is that vehicle position data can be displayed through a mobile application with map visualization integrated with google maps and the user can turn off or turn on the vehicle through the application with the farthest distance that has been successfully tested of 141 km. The time for the tracking device to respond to commands from the application varies from 5 to 20 seconds depending on the strength of the internet connection used. Keywords : Internet of Things (IoT), Tracking Device, Global Positioning System (GPS), mikrokontroler.

GLOBAL POSITIONING SYSTEM-BASED POLLUTION RESPONSE ASSET TRACKING SYSTEM (RATS)

1997 ◽  
Vol 1997 (1) ◽  
pp. 899-903
Author(s):  
Joseph G. Stahovec
Keyword(s):  
Oil Spill ◽  
Global Positioning System ◽  
Tracking System ◽  
Positioning System ◽  
Operational Effectiveness ◽  
Automated Tracking ◽  
Asset Tracking ◽  
Global Positioning ◽  
And Control ◽  
Mapping Systems

ABSTRACT The U.S. Navy's Supervisor of Salvage (SUPSALV) Response Asset Tracking System (RATS) was developed to provide enhanced safety and logistics support, improve worldwide contingency planning capabilities, and increase operational responsiveness through automated tracking of oil spill containment and recovery equipment. RATS's worldwide tracking capability is accomplished by combining Global Positioning System (GPS) technology with VHF and INMARSAT-C transmission links. The system allows the equipment's position to be automatically overlaid on digitized mapping systems and nautical charts. The application of GPS-based RATS technology to oil spill containment and recovery scenarios greatly enhances “command and control” and operational effectiveness.

Monitoring and Controlling Criminal Offenders Using the Satellite Global Positioning System Coupled to Surgically Implanted Transponders: Is It a Viable Alternative to Prison?

1995 ◽  
Vol 7 (3-4) ◽  
pp. 341-346 ◽  
Author(s):  
Thomas G. Toombs
Keyword(s):  
Behavior Change ◽  
Global Positioning System ◽  
Surveillance System ◽  
Positive Behavior ◽  
Positioning System ◽  
Criminal Offenders ◽  
Global Positioning ◽  
Primary Means ◽  
Successful Rehabilitation ◽  
And Control

This essay criticizes the continuing use of prisons as the primary means of controlling adjudicated criminal offenders. After conceding that prisons do control, but in ways which violate most of what has been discovered and should be known about how to promote lasting, positive behavior change, the argument is advanced that prisons are obsolete and should be replaced by a satellite surveillance system that would offer a better, less costly method to both monitor and control criminal offenders under conditions with far more potential for successful rehabilitation efforts.

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