1. A computer-implemented method for origin-destination (OD) analysis of vehicle trajectory data, comprising: providing a vehicle trajectory data set to an OD analyzer, the vehicle trajectory data set includes vehicle trajectory data collected from a sensor network having a plurality of sensor stations for detecting vehicles, the sensor stations of the sensor network are distributed in a geographical area of interest, wherein the vehicle trajectory data include trajectories of vehicles captured by the sensor network; analyzing the vehicle trajectory data set by the OD analyzer to determine an origin and a destination of trips for trajectories of the vehicles in the vehicle trajectory data set, wherein the OD analysis comprises, calculating a probability distribution of travel time between sensor station pairs of the sensor network over a number of (dropped-out) intermediate stations, and determining a stop probability between a station pair in the trajectories of the vehicles, wherein a stop is a destination of a previous trip and an origin of a next trip in the trajectories; and wherein the OD analysis performed by the OD analyzer determines traffic patterns in the geographical area of interest which facilitates traffic planning in the geographical area of interest.