Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a satellite trajectory prediction model according to the satellite navigation message, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a satellite trajectory prediction model according to the satellite navigation message, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating at least one parameter of a satellite trajectory prediction model according to the propagating condition, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: A method and device for predicting satellite trajectory extension data in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for at least one satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating at least one parameter of a satellite trajectory prediction model according to the propagating condition, and propagating at least one set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: A method and device for predicting satellite trajectory extension data used in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition, and propagating a set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: A method and device for predicting satellite trajectory extension data used in a mobile apparatus. The device in accordance with the present invention comprises an I/O interface and a microprocessor. The input/output (I/O) interface is used for obtaining at least one satellite navigation message for a satellite. The microprocessor is used for determining a propagating condition according to the satellite navigation message, estimating a plurality of parameters of a satellite trajectory prediction model according to the propagating condition, and propagating a set of satellite trajectory extension data by using the satellite trajectory prediction model.

Abstract: The invention provides an aiding data collecting method for a Global Navigation Satellite System (GNSS) terminal connected to an aiding data server through a wireless connection. Availability of an aiding data is first queried about. Whether the aiding data is in the GNSS terminal is then checked according to the response of the query. An aiding data request is then sent to the aiding data server. An aiding data sent by the aiding data server is then parsed in response to the aiding data request. Finally, the collected aiding data is sent to the GNSS terminal for acquiring and/or tracking satellite signal from at least one GNSS satellite.

Abstract: The present invention discloses a DAC DC offset calibration method and related apparatus. The disclosed method includes the following steps. First, apply a first value and a second value to the DAC to generate a first measurement value and a second measurement value respectively. Then, without using any predetermined parameter, determine a DC compensation value according to the first value, the second value, the first measurement value, and the second measurement value. The DC compensation value is used to calibrate the DAC.

Abstract: The present invention discloses a method and related apparatus for compensating a gain mismatch between a first DAC and a second DAC. The second DAC is connected to a gain amplifier. The method includes the following steps. Determine a first gain value corresponding to the first DAC. Control the gain amplifier with a first control value and determine a second gain value corresponding to the second DAC and the gain amplifier. Control the gain amplifier with a second control value and determine a third gain value corresponding to the second DAC and the gain amplifier. Without utilizing a predetermined characteristic parameters, determine a calibration control value according to the first, second, third gain values, and the first and second control values. Control the gain amplifier with the calibration control value to compensate for the gain mismatch between the first DAC and the second DAC.

Abstract: The present invention discloses a DAC DC offset calibration method and related apparatus. The disclosed method includes the following steps. First, apply a first value and a second value to the DAC to generate a first measurement value and a second measurement value respectively. Then, without using any predetermined parameter, determine a DC compensation value according to the first value, the second value, the first measurement value, and the second measurement value. The DC compensation value is used to calibrate the DAC.

Abstract: The present invention discloses a method and related apparatus for compensating a gain mismatch between a first DAC and a second DAC. The second DAC is connected to a gain amplifier. The method includes the following steps. Determine a first gain value corresponding to the first DAC. Control the gain amplifier with a first control value and determine a second gain value corresponding to the second DAC and the gain amplifier. Control the gain amplifier with a second control value and determine a third gain value corresponding to the second DAC and the gain amplifier. Without utilizing a predetermined characteristic parameters, determine a calibration control value according to the first, second, third gain values, and the first and second control values. Control the gain amplifier with the calibration control value to compensate for the gain mismatch between the first DAC and the second DAC.