Transmission of signals for ranging, timing, and data transfer

A method, comprising:

• receiving an instruction for generating a signal comprising a ranging signal and a data signal;
• transmitting, via a terrestrial transmitter for transmitting radio waves having encoded messaging information and timing information for one or more of positioning, navigation and timing, the signal at least partially responsive to the instruction, the signal comprising a pulse group comprising a number of ranging pulses and a number of data pulses subsequent to the number of ranging pulses, respective ones of the number of data pulses having a phase of either a positive-going phase or a negative-going phase, wherein data is encoded using the either positive-going phases or negative-going phases of the data pulses, wherein the pulse group exhibits an offset start time according to a chain-level dithering interval;
• receiving a further instruction for generating a further signal;
• and
• transmitting, via a further terrestrial transmitter for transmitting radio waves having encoded messaging information and timing information for one or more of positioning, navigation and timing, the further signal at least partially responsive to the further instruction, the further signal comprising a further pulse group, wherein the further pulse group exhibits the offset start time according to the chain-level dithering interval.