Oliver Montenbruck

Oliver Montenbruck is head of the GNSS Technology and Navigation Group at DLR/GSOC. He also works at the German Aerospace Center.

Figure 1. GLONASS K2 spectrum of the L1 frequency band. The different components of the L1 CDMA signal are indicated by colored boxes. L1SC: secured signal. L1OC: open service signal. (All figures provided by the authors)

April 29, 2024

GLONASS CDMA signals now on L1, L2

Image: metamorworks/iStock/Getty Images Plus/Getty Images

September 24, 2023

Inside the box: New NavIC clock outperforms previous generation

Knowing your position is only part of navigation. (Photo: Oliver Montenbruck)

October 18, 2021

GNSS today: A four-leaf clover

April 28, 2020

GPS III ‘Magellan’ starts signal transmission

Figure 1. Theoretical spectra of the four signals transmitted by a GPS III satellite in the L1 frequency band. (Image: Authors)

March 19, 2019

First light: Broadcast of L1C by GPS III

FIGURE 1. An artist’s view of the QZSS satellites. The upper-most satellite is the geostationary QZS-3 spacecraft with the additional S-band dish antenna whereas the other satellites pictured are the inclined geosynchronous satellites. (Image: Mitsubishi Electric/JAXA)

February 9, 2018

Innovation: QZS-3 and QZS-4 join the Quasi-Zenith Satellite System

Source: GPS World

August 23, 2017

QZS-2 signal analysis, QZS-3 launched

Source: Richard B. Langley

April 24, 2017

Innovation: Orbit determination of LEO satellites with real-time corrections