SatNow’s Post

If you weren't able to attend the GNSS technology webinar with Burke Asay a couple weeks ago, you missed a good discussion on tilt accuracy. Here's the question: Tilt compensating RTK GNSS antennas promise significant productivity gains, but do they deliver on accuracy? Here's a recap. #gnss #gs05 #gs18 #leicageosystems #puresurveying

High-accuracy receivers need GNSS #corrections, but what exactly are these corrections and how to get them to the receiver? Find out all about corrections and #agnostic GNSS receivers in this insight article: https://ow.ly/olYL50U57gM #RTK #precisePositioning

The term “dead reckoning” comes from the nautical tradition, where it was used to describe a navigation technique that involved estimating a vessel’s current position based on its previously known position and course, combined with speed and time measurements. This method assumes that the object’s motion is constant, and there are no external forces acting on it, such as wind or currents.    In the context of inertial navigation systems, dead reckoning is achieved through the use of accelerometers and gyroscopes. These sensors measure the object’s linear accelerations and angular velocities, respectively. By integrating these measurements over time, the system continuously updates its estimated position, velocity, and attitude. #TDK #TDKTrustedPositioning #TrustedPositioning #sensors #PositioningSoftware  #INS #GNSS #InertialNavigation #LocationSystems #RTLS 

GNSS spoofing detected with #OSNMA! Web user interface shows spoofing detection during a GNSS spoofing attack at the #JammerTest in Norway. #SituationalAwareness Test data collected over several days reveals that Septentrio receivers detected each spoofing attack, while competition receivers did not. Find out more in our insight article: https://lnkd.in/d2ypjWHA In the top right corner of the interface, the receiver indicates spoofing and alerts the system of an attack. The receiver also indicates that the OSNMA #Galileo authentication mechanism has detected false satellite signals. Spoofing is a “smart” form of radio interference where false positioning information is sent into the receiver, overpowering genuine GNSS signals and taking over positioning of the receiver and navigation of the whole system. Learn more about GNSS spoofing and #AIM+ anti-spoofing protection: https://lnkd.in/dim4_Hsy

GNSS spoofing detected with #OSNMA! Web user interface shows spoofing detection during a GNSS spoofing attack at the #JammerTest in Norway. #SituationalAwareness Test data collected over several days reveals that Septentrio receivers detected each spoofing attack, while competition receivers did not. Find out more in our insight article: https://lnkd.in/d2ypjWHA In the top right corner of the interface, the receiver indicates spoofing and alerts the system of an attack. The receiver also indicates that the OSNMA #Galileo authentication mechanism has detected false satellite signals. Spoofing is a “smart” form of radio interference where false positioning information is sent into the receiver, overpowering genuine GNSS signals and taking over positioning of the receiver and navigation of the whole system. Learn more about GNSS spoofing and #AIM+ anti-spoofing protection: https://lnkd.in/dim4_Hsy

Taking Hydro Surveys to the Next Level: CHCNAV HQ-400 & USV Apache 4 Ready to make your underwater surveys faster and more precise? CHCNAV’s got your back! The Multibeam Echosounder HQ-400 pairs perfectly with the USV Apache 4, giving you a powerful duo for super detailed underwater mapping. The HQ-400 delivers high-res, highly accurate data, making it a great fit for hydrographic surveys, ports, rivers, and dams. And when you throw in the USV Apache 4 — a remote-controlled, unmanned survey vessel — you can easily tackle those hard-to-reach areas without breaking a sweat. Less time, less cost, but top-tier results. Let’s dive deep with CHC Navigation | CHCNAV ! #CHCNAV #HQ400 #USVApache4 #HydrographicSurvey #MultibeamEchosounder #SurveyTech

How to Build a Satellite: A Comprehensive Guide

SPAN GNSS+INS technology combines #GNSS positioning with inertial navigation system (#INS) measurements like velocity, attitude and heave. In a solution customised for #HydrographicSurvey and #DynamicPositioning applications, the 3D positioning provides accurate measurements even through extended GNSS outages. Read more about SPAN technology >> https://hxgn.biz/3dLkB7P #BathymetricSurvey #MarineTechnology #MarineIndustry #MarineConstruction #Dredging #DP

Use #safe receivers that flag GNSS #spoofing! Data from #JammerTest showed that Septentrio receivers flagged each spoofing attack, while competition receivers at times reported positions which were way off without flagging GNSS spoofing. See test data: https://lnkd.in/eevHE7CJ #AssuredPNT Spoofing is a “smart” form of radio interference where false positioning information is sent into the receiver, overpowering genuine GNSS signals and taking over positioning of the receiver and navigation of the whole system. Video credit: Leave the World Behind

RTR(A) BASICS: ILS- instrument landing system MLS – microwave landing system NDB- non-directional radio beacon PSR- primary surveillance radar QDM- magnetic heading QNH – Altimeter sub scale setting to obtain elevation when on the ground RNP- required navigation performance RVSM – reduced vertical separation minimum