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RF Test Whitepapers

Whitepaper: Real-World Interference Impacts Analysis using High Dynamic Range GNSS RF/IF Signals R&P

This paper introduces the Multi-frequency RF Signal Record & Playback System (MF R&P) applied to interferences impact analysis on the GNSS field. The first section briefly describes the MF R&P and presents the typical setup examples for GNSS applications. This setup is focused on applications requiring multiple frequencies/channels recording and playback. The next sections present the methodology used for interferences analysis and the validation of the approach is described. A final section describes the tests done with UHF CH 23.

Whitepaper: New strategies for validating RF receiver performance

Until recently, the behavior of RF receiver devices was validated with field testing, which is a costly and timely method, offering no repeatability. However, new record and playback techniques now offer a versatile solution to tests the limits of RF performance, while reducing the need for expensive drive tests. With greater emphasis on in-laboratory analysis, manufacturers benefit from accurate, reliable, and repeatable performance testing.

Technical Paper: Beyond Simulation: Real-world Multi-Channel GPS Signal Record & Playback for Navigation System Tests

With multi-frequency capabilities added to the Averna’s RF Record & Playback (R&P) system, the range of Global Navigation Satellites System (GNSS) applications has drastically increased. Now, the R&P system can be applied to multi-frequency GNSS receivers for testing and validation purposes. Even more, enforced by new fixtures, the R&P can be used for design and development of hybrid GNSS receivers

Whitepaper: Low-Cost IF/RF Navigation Validation Platform with Integrated Traffic Message Channel Simulation

Nowadays, one of the fastest-growing markets for GNSS sensors is the transportation industry. To create an intelligent navigation system, transportation companies intend to integrate GNSS receivers with road mapping and broadcast traffic events. These sophisticated apparatus require complex system-level integrated testing. Up to now, such tests have been performed as road tests, which are limited in terms of capacity nonexistent repeatability and wasted time in traffic without the assurance that the targeted test cases will arise.

Application Note: RF Signal Record & Playback System for GPS Testing and Validation

This paper introduces the RF Signal Record & Playback System (R&P) applied to Global Navigation Satellite System (GNSS) RF signals. A series of tests were performed in order to validate the R&P system in the presence of GPS L1 signals. It is expected that the R&P system presented is perfectly suitable for GNSS stand-alone receiver testing and validation. The methodology, test results, and analysis are presented in the subsequent sections. Emphasis is placed on the degradation of position and velocity estimates due to recording and playback processing. The raw data is also processed to enforce the analysis.

Technical Paper: FM Receiver - Extreme Dynamic Range Test Case

AM/FM radios are subject to many signal impairments caused by reflections, multi-path propagation, adjacent and co-channel interferers, shadowing, and electrical noise from many sources. In urban environments, the FM band is often congested with strong local stations and other moderate or weak signals. .