Cell organization and transmission schemes in a wide area positioning system (WAPS)

A position location system comprising:

• a plurality of transmitters that each broadcast a plurality of positioning signals,
• wherein each positioning signal of the plurality of positioning signals comprises a pseudorandom ranging signal,
• wherein, during an interval of time, at least two positioning signals are transmitted concurrently, each by a different member of the plurality of transmitters,
• wherein the at least two positioning signals have different carrier frequencies offset from one another by an offset that is less than or equal to twenty-five (25) percent of the bandwidth of each positioning signal of the at least two positioning signals,
• wherein each carrier frequency is the sum of a base frequency plus an element of a set of frequency offsets, and each of the frequency offsets in the set of frequency offsets is a multiple of a minimum nonzero offset,
• wherein the set of frequency offsets corresponds to 0, k0R+R/Q, 2 k0R+2R/Q, 3 k0R+3R/Q . . . , (Q−1)k0R+(Q−1)R/Q, where R represents PN frame rate, k0 represents a nonzero integer, and Q represents an integer equal to the number of frequency offsets in the set of frequency offsets.