アプリケーション検索
ローデ・シュワルツは、測定器、原理、手法に関する当社の知識を共有し、お客様がローデ・シュワルツ測定器で最高のパフォーマンスを得られるよう支援するため、各種アプリケーション・ノート、アプリケーション・カード、アプリケーション・ビデオを作成しています。
アプリケーション検索
ローデ・シュワルツは、測定器、原理、手法に関する当社の知識を共有し、お客様がローデ・シュワルツ測定器で最高のパフォーマンスを得られるよう支援するため、各種アプリケーション・ノート、アプリケーション・カード、アプリケーション・ビデオを作成しています。
3 結果
Automotive radar sensors can be well hidden behind bumpers, but require to be transmissible in the respective frequency domain. To effectively hide the sensors, the radar-transparent areas are usually required to have the exact same shade of color as the rest of the vehicle. To select proper colors and coatings for such bumpers, the respective material properties must be known. In the past, either quasioptical or waveguide based setups, both using vector network analyzers (VNA), have been used. This application card demonstrates a simplified method for material characterization in the automotive radar frequency domain (76 GHz to 81 GHz) based on the R&S®QAR50 automotive radome tester.
Oct 04, 2023
Modern automotive radar systems occupy very wide bandwidth in order to have a good location resolution. In most cases the bandwidth is a result of frequency modulation or fast frequency hopping techniques, in some cases also pulse modulation is used. Besides the measurement of the frequency variation over time like deviation and linearity, the verification of emissions according to EN or FCC standards is mandatory. ETSI regulations for measuring peak transmission power from radar operating at 77-81 GHz require 50 MHz resolution bandwidth for the measurements. Publications are available that describe the measurements on pulsed UWB or MB-OFDM signals in detail, for frequency-modulated signals the information is limited.This application note provides information how to perform spectral emission measurements on frequency modulated CW signals with spectrum analyzers using RBW filters with very wide bandwidth, and explains the capabilities and the limiting factors of the Rohde & Schwarz FSW signal and spectrum analyzer to perform this measurement.
Jun 28, 2019 | AN 番号 1EF107
This White Paper provides a more detailed view on radar waveforms for Aerospace and Defence and commercial radar systems. Waveforms such as pulse and pulse-Doppler signal, continuous wave and frequency shift keying waveforms are described. It also shows continuous waveform trends designed for specific needs and application differences of continuous wave radar compared to pulse radar systems.
Aug 31, 2015 | AN 番号 1MA239