Abstract: A Global Navigation Satellite System (GNSS) receiver at a client device receives first correction data from a first correction system that includes, but is not limited to, a first orbit correction value, a first clock correction value, and a first code or phase bias correction value. The GNSS receiver also receives second correction data from a second correction system that includes, but is not limited to, a second orbit correction value, a second clock correction value, a second code or phase bias correction value, and an atmospheric correction value. The GNSS receiver determines a difference between a sum of the first correction data and a sum of the second correction data to calculate a difference value that is utilized to adjust the atmospheric correction value received from the second correction system. The adjusted correction value may be utilized with the first correction data to determine position while mitigating errors.

Abstract: A Global Navigation Satellite System (GNSS) receiver at a client device receives first correction data from a first correction system that includes, but is not limited to, a first orbit correction value, a first clock correction value, and a first code or phase bias correction value. The GNSS receiver also receives second correction data from a second correction system that includes, but is not limited to, a second orbit correction value, a second clock correction value, a second code or phase bias correction value, and an atmospheric correction value. The GNSS receiver determines a difference between a sum of the first correction data and a sum of the second correction data to calculate a difference value that is utilized to adjust the atmospheric correction value received from the second correction system. The adjusted correction value may be utilized with the first correction data to determine position while mitigating errors.

Abstract: In one or more embodiments described herein, there is provided an apparatus including a memory having computer code stored thereon, and a processor. The code is configured to cause the apparatus to: receive partial GNSS data from one or more GNSS satellites relating to the geographical location of a first portable electronic device, wherein the received partial GNSS data is insufficient for determining the geographical location of the first portable electronic device; communicate with one or more further portable electronic devices in proximity to the first portable electronic device to access partial GNSS data relating to the geographical location of the respective further portable electronic devices; and use the accessed partial GNSS data of the further portable electronic devices to supplement the received partial GNSS data of the first portable electronic device to thereby determine the geographical location of the first device.

Abstract: In one or more embodiments described herein, there is provided an apparatus including a memory having computer code stored thereon, and a processor. The code is configured to cause the apparatus to: receive partial GNSS data from one or more GNSS satellites relating to the geographical location of a first portable electronic device, wherein the received partial GNSS data is insufficient for determining the geographical location of the first portable electronic device; communicate with one or more further portable electronic devices in proximity to the first portable electronic device to access partial GNSS data relating to the geographical location of the respective further portable electronic devices; and use the accessed partial GNSS data of the further portable electronic devices to supplement the received partial GNSS data of the first portable electronic device to thereby determine the geographical location of the first device.