Gps Single Point Positioning with Sa Off: How Accurate Can We Get?
نویسندگان
چکیده
The announcement by U.S. President Bill Clinton to turn off 'Selective Availability' at midnight (Washington DC time) 1 May 2000 caught everyone by surprise. This decision to stop degrading the accuracy of the Global Positioning System's (GPS) Standard Positioning Service (SPS) will have a significant impact on users all over the world. One important outcome for the geomatics community is that the substantial improvement to GPS Single Point Positioning (SPP) results could make it an attractive alternative to the Differential GPS (DGPS) mode of positioning. In this paper some results from different SPP processing strategies are presented, and the accuracy improvement in the case of averaged static solutions is discussed. Finally, the paper speculates on the attainable SPP accuracy using single-frequency GPS receivers when the ionospheric activity is less intense in the future.
منابع مشابه
Improvement in Differential GPS Accuracy using Kalman Filter
Global Positioning System (GPS) is proven to be an accurate positioning sensor. However, there are several sources of errors such as ionosphere and troposphere effects, satellite time errors, errors of orbit data, receivers errors, and errors resulting from multi-path effect which reduce the accuracy of low-cost GPS receivers. These sources of errors also limit the use of single-frequency GPS r...
متن کاملLocalization based User Tracking Using RSSI Fingerprint
To provide an accurate location many location systems with different technologies such as Wi-Fi, Beacon, GPS, etc,. can be used for indoor localization. One of the Biggest Challenges in indoor localization system is to determine the actual indoor position of the user using smart device (Mobile Phone). To design and implement an indoor localization system based on Received Signal Strength Indica...
متن کاملAdaptive Radiolocation in Wireless Sensor Networks
Advances in radios, sensors, actuators and embedded computing technology have enabled a proliferation of wireless sensing networks. These networks offer an affordable way of performing distributed sensing for a seemingly unbounded set of applications. Accurate positioning is a key enabler for many sensor applications including surveillance networks, robotic sensors, location-based routing in wi...
متن کاملLeast Squares Techniques for GPS Receivers Positioning Filter using Pseudo-range and Carrier Phase Measurements
In present study, using Least Squares (LS) method, we determine the position smoothing in GPS single-frequency receiver by means of pseudo-range and carrier phase measurements. The application of pseudo-range or carrier phase measurements in GPS receiver positioning separately can lead to defects. By means of pseudo-range data, we have position with less precision and more distortion. By use of...
متن کاملAccurate Determination of GPS Receiver with Different Classification Methods
One of the instruments for determination of position used in several applications is the Global Positioning System (GPS). With a cheap GPS receiver, we can easily find the approximate position of an object. Accuracy estimation depends on some parameters such as dilution of precision, atmospheric error, receiver noise, and multipath. In this study, position accuracy with GPS receiver is classifi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000