Patent ID: 8823588

Claim:
A positioning and ranging system comprising: a transmitter that transmits a plurality of impulses; and a receiver that receives the plurality of impulses; wherein, the receiver includes: a memory, and a processor coupled to the memory and configured to: record a sensing time of a first impulse among the plurality of impulses transmitted by the transmitter, detect a sensing margin that is a difference between a field intensity of the first impulse received and a field intensity reception limit of the receiver, identify a sensing error differential time being a timing corresponding with sensing of the first impulse based on the sensing margin detected, and correct the sensing time of the first impulse using the identified sensing error differential time, wherein the positioning and ranging system measures a distance between the transmitter and the receiver and a position of the transmitter based on a time when the transmitter transmits the first impulse and the corrected sensing time, wherein the transmitter includes: a memory, and a processor coupled to the memory and configured to: transmit a frame that includes a plurality of impulses with substantially the same intensity, and wherein the processor of the receiver is configured to: attenuate the field intensity of each of the plurality of impulses in the frame so that the field intensity of each of the plurality of impulses is different from attenuated intensities of other impulses included in the frame transmitted, and detect the sensing margin based on the plurality of impulses attenuated within the frame.