This article investigates the basic theory of software-based receivers for L1-band civilian GPS applications, including a discussion of signal acquisition and tracking, and the need for bit synchronization in the receiver. Also included is a brief description of an L1-band GPS receiver, the MAX2741, which serves as a compact and inexpensive RF front-end for the receiver. A similar article appea...

Received Jan 29, 2018 Revised Mar 28, 2018 Accepted Apr 17, 2018 This paper focuses on the design and fabrication of reconfigurable multiband antenna for RFID and GPS as an advance tracking technology for various applications that achieve a physically compact, planar profile and sufficient bandwidth. The antenna can be reconfigured as single band at 1.275 GHz for GPS applications when the switc...

This paper represents microstrip antenna for dual band applications such as Global Positioning System (GPS) and Bluetooth applications. The designed antenna must perform dual frequency operation i.e. 1.57 GHz and 2.45 GHz. So antenna resonates at frequency 1.57 GHz for GPS and 2.45 GHz for Bluetooth applications. Using CAD-FEKO electromagnetic simulation software, antenna has been optimized for...

Classically difficult positioning environments have always called for some augmentation technology to assist the Global Positioning System (GPS). “Locata” offers augmentation, and even replacement, to GPS in such environments. However, like any other system relying on wireless technology, a Locata positioning network faces issues in the presence of RF interference (RFI). This problem magnifies ...

Global position systems (GPS) receiver based on least mean square (LMS) could resist the interference by null jamming direction. Considering that existing band-limited Gaussian noise signals were easily suppressed LMS-based GPS receivers, a time domain random flicker algorithm was proposed to improve its performance. By disturbing convergence of LMS, it achieve purpose suppressing GPS. Simulati...

The differential global positioning system (DGPS) transmits a GPS enhancement signal using a top-loaded monopole antenna in the medium frequency range. The top-loaded antenna in the medium frequency band can attain a radiation efficiency on the order of 10%. The antenna ground plane characteristics affect the antenna radiation efficiency. To improve the radiation efficiency, it is necessary to ...

The proposed system provides real time tracking application that provides location of the mobile unit to the fixed control unit as well as display advertisements. The location of the object is seen on the map on the computer interfaced with the central unit. The ZigBee module designed to operate within the ZigBee protocol to support GPS tracking system in terms of latitude and longitude. The mo...