Simulation of post-ADC digital beam-forming for large area radar receiver arrays
2007 (English)In: Proceedings: 2006 International RF and Microwave Conference : September 12 - 14, 2006, Putrajaya, Malaysia / [ed] Zaiki Awang, Piscataway, NJ: IEEE Communications Society, 2007, 272-276 p.Conference paper (Refereed)
In order to provide instantaneous three-dimensional radar measurements spanning the entire vertical extent of the ionosphere, the planned EISCAT 3D incoherent scatter radar system includes multiple receive-only antenna arrays, situated at 90-280 km from the main transmit/receive site. These will employ band-pass sampling at ∼80 MHz, with the input signal spectrum contained in the 6th Nyqvist zone. This paper presents simulations and methods used to investigate use of a post-ADC fractional-sample-delay (FSD) system necessary to perform true time-delay beamforming. To test the feasibility and limitations of the system an extensive simulation tool has been developed. The simulation system is implemented in matlab to provide cross-platform compatibility and can be applied to any similar system. Performance degrading aspects such as noise, jitter, bandwidth and resolution can be included in the simulations. The use of FIR-filters in the base-band of a band-pass sampled signal to apply true time-delay beam-forming is shown to be feasible.
Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2007. 272-276 p.
Research subject Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-30106DOI: 10.1109/RFM.2006.331084Local ID: 3d3cfdf0-d3aa-11db-b6e3-000ea68e967bISBN: 0-7803-9744-4OAI: oai:DiVA.org:ltu-30106DiVA: diva2:1003333
International RF and Microwave Conference : 12/09/2006 - 14/09/2006
Godkänd; 2007; 20061229 (ysko)2016-09-302016-09-30Bibliographically approved