Institute for Information Industry

Chih-Hung Li

Emery Jou

Shu-Min Chuang

Ming F Yang

He-Sheng Wang

Shan-Yuan Yang

Chih-Min Hsu

Shau-Shiun Jan

Dze-Min Jou

An-Lin Tao

Chia-Chyang Chang

Shan-Yaun Yang

An electronic apparatus includes a selection unit, a storage unit and a processing unit. The selection unit and the storage unit are coupled to the processing unit. The selection unit selects a first reference point proximate to the electronic apparatus. The storage unit stores a plurality of second locations of a plurality of second reference points. The processing unit executes a single-point distance measurement between the electronic apparatus and a first location of the selected first reference point, provides the electronic apparatus auxiliary positioning information by selecting the second locations stored in the storage unit and generates a speculative location of the electronic apparatus by further computing the results of the single-point distance measurement and the auxiliary positioning information.

Method of positioning and electronic apparatus using the same

A satellite positioning method, a satellite pseudorange calculation apparatus and a satellite pseudorange calculation method thereof are provided. The satellite pseudorange calculation apparatus is used for calculating a pseudorange between a satellite and a satellite positioning receiving device, wherein the pseudorange includes an integer code value and a fractional code value. The satellite pseudorange calculation apparatus comprises a receiver and a processor electrically connected with the receiver. The receiver is configured to receive a code phase from a satellite signal acquisition unit, and the processor is configured to calculate the fractional code value according to the code phase. The receiver is further configured to define an approximation position and calculate the integer code value according to the approximate position and the fractional code value. The satellite positioning method is used for positioning the satellite positioning receiving device.

Satellite positioning method, satellite pseudorange calculation apparatus and satellite pseudorange calculation method

A global positioning system device and an ionosphere error estimation method thereof are provided. The global positioning system device is connected to a plurality of dual-band base stations, and receives a plurality of ionosphere pierce point coordinates and a plurality of ionosphere errors from the dual-band base stations. The global positioning system device calculates a user ionosphere error by an interpolation method based on the ionosphere pierce point coordinates and the ionosphere errors of the dual-band base stations and a user ionosphere pierce point coordinate of the global positioning system device.

Global positioning system device and ionosphere error estimation method thereof

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Taipei, Taiwan

Chih-Hung Li