Estimating satellite and receiver differential code bias using a relative Global Positioning System network

Receiver Biases in Global Positioning Satellite Ranging

The regional estimates of the GPS satellite and receiver differential code biases

The Differential Code Biases (DCB), which are also termed hardware delay biases, are the frequency-dependent time delays of the satellite and receiver. Possible sources of these delays are antennas and cables, as well as different filters used in receivers and satellites. These instrumental delays affect both code and carrier measurements. These biases for satellites and some IGS stations tend ...

Satellite Orbit Determination Using a Single-Channel Global Positioning System Receiver

A proposed satellite orbit determination system has been analyzed, one that uses measurements from a single-channel Global Positioning System (GPS) receiver. The purpose of this study is to predict the likely efficacy of a low-power autonomous orbit determination system. The system processes the pseudo range outputs of the receiver using an extended Kalman filter. The receiver cycles through di...

Iranian Permanent GPS Network Receivers Differential Code Biases Estimation Using Global Ionospheric Maps

Measurements of the dual frequency Global Positioning System (GPS) receivers can be used to calculate the electron density and the total electron content (TEC) of the ionosphere layer of the Earth atmosphere. TEC is a key parameter for investigating the ongoing spatial and temporal physical process of the ionosphere. For accurate estimation of TEC from GPS measurements, GPS satellites and GPS r...

Accurate Positioning in a Flight Inspection System Using Differential Global Navigation Satellite Systems

The purpose of a flight inspection system is to calibrate and evaluate the performance of aircraft navigation and landing aids to ensure conformance to specifications. This mission requires that the flight inspection platform have a reference position estimate significantly more accurate than that of the facility under inspection, i.e., tenths of meter accuracy over a region of many kilometers,...