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System for processing navigational satellite signal

A signal processing and navigation satellite technology, applied in the field of satellite navigation, can solve problems such as inability to collect data for several minutes or hours, inability to control intermediate frequency carrier frequency and data sampling rate, and failure of devices

Inactive Publication Date: 2006-11-15
OLINKSTAR CORP
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Problems solved by technology

In this way, the data collection time is limited by the memory capacity. If a 256MB memory is used, the data can only be collected for tens of seconds, but cannot be collected for several minutes or hours.
If the sampling rate is high or the number of bits per sample point is large, the acquisition time will be even shorter; 2. Since the device transmits the data to the computer after the data acquisition is completed, the device cannot be used to develop real-time 3. The device cannot play back the collected data or generated data; 4. There is no external clock source input, and the IF carrier frequency and data sampling rate cannot be controlled

Method used

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  • System for processing navigational satellite signal
  • System for processing navigational satellite signal
  • System for processing navigational satellite signal

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention aims to solve the shortcomings of the above-mentioned navigation satellite signal acquisition device, and proposes a new navigation satellite signal acquisition and playback system. This system adopts high-speed standard computer interface, such as USB2.0 interface (speed up to 480Mb / s), without memory, can transmit data to computer continuously, in real time and for a long time. In addition, this system also has digital, intermediate frequency, radio frequency Playback function, you can play back the collected data or generated data stored in the computer. In addition to the local oscillator, there is an external clock input for selection, which can control the IF carrier frequency and data sampling rate.

[0022] Such as image 3 as shown, image 3 It is a functional block diagram of the navigation satellite signal processing...

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Abstract

The present invention provides a navigation satellite signal processing system. It includes a signal acquisition device, and is characterized by that the described signal acquisition device has computer interface whose data transmission rate is greater than 12Mbit / s. The adoption of said system can implement real-time, continuous and long-period acquisition of navigation satellite signal, and can directly transfer the signal data into computer.

Description

technical field [0001] The invention belongs to the field of satellite navigation, in particular to a navigation satellite signal processing system. The processing system generally includes a signal acquisition device and a signal playback device, and is an effective tool for developing a satellite navigation receiver. This system converts the radio frequency signal of the navigation satellite into an intermediate frequency signal with a lower carrier frequency, and then converts it into data through sampling, and then transmits the data to the computer through the standard USB2.0 interface. This system can collect navigation satellite signals in real time, continuously, and for a long time. Developers can use these data to study the algorithm, structure and program of satellite navigation receivers or develop satellite navigation software receivers. At the same time, this system can also receive computer data through the standard USB2.0 interface, and then send out the radio ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/24
CPCG01S19/24
Inventor 王瀚晟张峻林
Owner OLINKSTAR CORP
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