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# What is signal monitoring ?
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Signal monitoring is a technique used to monitor and analyse electrical or electronic signals in a system or device. It can be used to detect anomalies or potential problems in the operation of a system, to monitor the performance of a device, or to provide accurate and reliable measurement data. Signal monitoring can be used in many fields, including electronics, engineering, medicine and aerospace.
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Signal monitoring is a technique used **to monitor and analyse electrical or electronic signals in a system or device**. It can be used to detect anomalies or potential problems in the operation of a system, to monitor the performance of a device, or to provide accurate and reliable measurement data. Signal monitoring can be used in many fields, including electronics, engineering, medicine and aerospace.
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# What are the principles of signal monitoring for GNSS
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Signal monitoring for Global Navigation Satellite Systems (GNSS) consists of monitoring and analysing the signals emitted by these satellites in order to provide an accurate position and synchronised time. To do this, it is necessary to have a GNSS receiver that can receive and decode these signals.
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# **Main principles of GNSS signal monitoring:**
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**Here are some of the main principles of GNSS signal monitoring:**
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**Triangulation:** The basic principle of GNSS is triangulation, which consists of determining the position of a receiver by using the travel times of signals from several satellites.
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**Time synchronisation:** GNSS signal monitoring also involves synchronising the receiver time with the satellite time, which is accurate to a fraction of a second.
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**Signal correction:** The GNSS signal can be disturbed by factors such as the atmosphere, buildings or mountains. Signal monitoring includes the detection and correction of these disturbances to improve the accuracy of the determined position.
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**Signal quality measurement:** GNSS signal monitoring also includes measuring the quality of the received signal, which can be affected by factors such as the environment, distance to the satellites and electromagnetic interference.
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**Data fusion :** In some cases, it is possible to improve accuracy by merging GNSS data with other data sources, such as inertial sensors or land surface maps. |
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* **Triangulation:** The basic principle of GNSS is triangulation, which consists of determining the position of a receiver by using the travel times of signals from several satellites.
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* **Time synchronisation:** GNSS signal monitoring also involves synchronising the receiver time with the satellite time, which is accurate to a fraction of a second.
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* **Signal correction:** The GNSS signal can be disturbed by factors such as the atmosphere, buildings or mountains. Signal monitoring includes the detection and correction of these disturbances to improve the accuracy of the determined position.
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* **Signal quality measurement:** GNSS signal monitoring also includes measuring the quality of the received signal, which can be affected by factors such as the environment, distance to the satellites and electromagnetic interference.
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* **Data fusion :** In some cases, it is possible to improve accuracy by merging GNSS data with other data sources, such as inertial sensors or land surface maps. |
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