Simrad 9420024128749, Product Brief

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Halo™ - 6 Radars in 1 - ‘Chirp Burst’
Simple pulse compression method of transmitting a single chirp is not possible or practical:
•
A short chirp gives good minimum range but poor long range target detection
•
A long chirp gives poor minimum range but good long range target detection
-> Transmitting a blend of short through long Chirps gets both excellent minimum range (about 6m – 20ft)
and high performance target detection (similar to a 6kW radar) at all ranges.
Halo transmits a short 40ns pulse and up to 5 variable length chirps up to 96us in a `Burst’ to cover the full
radar range from 300’ to 72nm. 500-2800 bursts per second are transmitted.
A combined radar data IMAGE of all 6 pulses is stitched together using high speed DSP software and sent
to the MFD.
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Navico Halo Pulse Compression - FM ‘Chirp Burst’