The Next Generation of Satellite Navigation

The Next Generation of Satellite Navigation

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Researchers developed an innovation that promises to enhance satellite navigation by leveraging wideband multiplexed signals for improved accuracy. They are doing so using a Dual-assisted Multi-component Tracking (DMT) technique that significantly enhances the precision of Global Navigation Satellite Systems (GNSS).

The evolution of GNSS led to the adoption of dual-frequency multiplexing techniques that combine multiple signals into a single wideband multiplexed signal (WMS), but despite their potential to improve GNSS ranging precision, existing tracking methods have not fully used this advantage.

According to Techxplore, a recent study by researchers from Tsinghua University published in Satellite Navigation introduces a transformative Dual-assisted Multi-component Tracking (DMT) method that is poised to redefine satellite navigation accuracy. This DMT technique innovatively employs wideband multiplexed signals and leverages the full spectrum of GNSS signals more effectively than ever.

Traditional GNSS tracking methods struggle with harnessing the full potential of dual-frequency multiplexed signals and are therefore primarily used to improve signal accuracy. The DMT technique, however, marks a significant advancement for WMS high-precision tracking by developing a comprehensive analysis method that extends the Root Mean Square Bandwidth (RMSB).

This approach fully utilizes the spectrum separation and multi-component characteristics that are inherent in WMS, thus enabling more efficient use of signal components for tracking. The DMT employs a dual-assisted structure to enhance the tracking accuracy of both lower and upper sub-band components, bringing significantly improved signal processing (including reduced tracking jitters and increased ranging precision, which are essential for applications that demand high reliability and exactitude in positioning, navigation, and timing).

This technique revolutionizes GNSS accuracy and harnesses wideband signals to minimize tracking jitter and elevate ranging precision. This leap in satellite navigation abilities benefits industries that need dependable, precise positioning and timing, and thus set a new standard for technological and industrial applications that rely on GNSS.

This information was provided by Techxplore.