|Welcome to the Winter 2021 issue of NAVIGATION. In this issue, we feature articles on GNSS interference and monitoring, autonomous orbit determination and timekeeping using X-ray pulsars, and the improvement of GNSS clock corrections and phase biases. We are also featuring articles reporting new equipment technologies that highlight GNSS camera sensor fusion, improved high-precision GNSS with a passive hydrogen maser, and improved 3D mapping-aided GNSS using dual-frequency pseudorange measurements from smartphones. This issue will also be the ION’s last printed version of NAVIGATION. The Spring 2022 issue will transition to open access and journal articles and issues will then be available via download from the ION website. This change in the publishing and circulation format allows for research to be published free of user costs or other access barriers and for the prioritization of NAVIGATION articles in electronic search engines. It is anticipated that circulation will expand, citations will increase, and additional quality submissions will result. ION will continue to encourage authors to promote their research through video abstracts hosted on the ION website. The latest video abstracts are documented below. ION also engages with the PNT community, through its webinar series, to highlight current topics of interest to the community. The most recent webinars are also documented below.
|NAVIGATION: Journal of the Institute of Navigation, Volume 68, Number 4
|669 - 671
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