A method of determining an absolute position for a motor vehicle, comprising the steps of: receiving information related to an absolute position of a remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944); determining if the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) is in line of sight of the motor vehicle; determining a distance between the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and the motor vehicle; and calculating the absolute position for the motor vehicle using the absolute position of the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and the distance when the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) is in line of sight of the motor vehicle, wherein the step of receiving information related to an absolute position of a remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) further comprises: receiving information from a plurality of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), the information including an absolute position for each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), and selecting a set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) that are in line of sight of the motor vehicle; characterized in that the step of determining a distance further comprises: determining a distance to each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), and selecting a subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) from the set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), said selecting in response to comparing convergence and divergence of solutions associated with each absolute position; and that the step of calculating the absolute position for the motor vehicle further comprises: calculating the absolute position of the motor vehicle using the absolute position of each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and using the distance to each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943,944). receiving information related to an absolute position of a remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944); determining if the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) is in line of sight of the motor vehicle; determining a distance between the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and the motor vehicle; and calculating the absolute position for the motor vehicle using the absolute position of the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and the distance when the remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) is in line of sight of the motor vehicle, wherein the step of receiving information related to an absolute position of a remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) further comprises: receiving information from a plurality of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), the information including an absolute position for each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), and selecting a set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) that are in line of sight of the motor vehicle; characterized in that the step of determining a distance further comprises: determining a distance to each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), and selecting a subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) from the set of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944), said selecting in response to comparing convergence and divergence of solutions associated with each absolute position; and that the step of calculating the absolute position for the motor vehicle further comprises: calculating the absolute position of the motor vehicle using the absolute position of each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) and using the distance to each remote source (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943, 944) in the subset of remote sources (231, 232, 233, 301, 302, 304, 402, 602, 910, 920, 930, 941, 942, 943,944).