Sunil B. Bisnath

Over the past several years, we have witnessed significantly increased research activities, as well as user interest, in the Precise Point Positioning (PPP) GNSS processing technique.  This interest has resulted in not only novel solutions to tackle the major problems in PPP, but also many novel...more >>

Is there a viable alternative to real-time kinematic (RTK) positioning? In this month's column, we take a look at the technique of precise point positioning (PPP). How close is PPP to prime time?

With the removal of Selective Availability about two years ago, the twice-distance root-mean-square horizontal accuracy of single-receiver, single-epoch GPS point positioning afforded by the Standard Positioning Service has improved to better than 10 meters in many situations.