Trailer measurement system for a towing vehicle

A portable device to facilitate determination of a position of one or more predefined locations on a trailer with respect to a towing vehicle towably coupled to the trailer, the portable device including:

• a user interface, a first transceiver, and a second transceiver, the second transceiver including an ultrawide band transceiver;
• and
• a controller communicatively coupled to the user interface, the first transceiver, and the second transceiver, the controller configured to:
• prompt a user, via the user interface, to position the portable device in alignment with a first predefined location of the one or more predefined locations on the trailer,
• instruct the first transceiver to transmit a first type of wireless signal to the towing vehicle upon receiving a confirmation from the user, via the user interface, that the portable device is positioned in alignment with the first predefined location,
• instruct the second transceiver to transmit a second type of wireless signal to be received by a plurality of ultrawide band transceivers mounted to a vehicle body of the towing vehicle, and
• determine the position of the first predefined location on the trailer relative to the towing vehicle based on time of flight of the second type of wireless signal between the second transceiver and the plurality of ultrawide band transceivers of the towing vehicle.

A method for measuring a position of a predefined location on a trailer relative to a towing vehicle, wherein the trailer is coupled to a rear end of the towing vehicle and extends rearwardly of the rear end of the towing vehicle, the method comprising:

• prompting, via a user interface of a portable device, a user to position the portable device in alignment with the predefined location on the trailer, wherein the portable device includes at least one ultrawide band transceiver;
• transmitting, by at least one transceiver of the portable device, a first type of wireless signal from the portable device to wake one or more systems of the towing vehicle upon receiving a confirmation from the user, via the user interface, that the portable device is positioned in alignment with the predefined location;
• transmitting a second type of wireless signals by at least one ultrawide band transceiver of the portable device to be received by a plurality of ultrawide band transceivers mounted to a vehicle body of the towing vehicle;
• and
• determining the position of the predefined location on the trailer relative to the towing vehicle based on time of flight of the transmitted second type of wireless signals.