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[TG] [TG11] Radar Safe Distamnce Calculations
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07-29-18, 06:34 PM
(This post was last modified: 07-31-18 02:58 PM by Chuck - Raymarine - Moderator.)
Post: #1
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[TG11] Radar Safe Distamnce Calculations
We have a RAYMARINE DRS4D Nav radar fitted to our small boats and note the user manual quoted safe distance of 1m (10W/m2). The 10 W/m2 annotation indicates that this is an Average Limited radar. However when we do our calculations we find that this radar is peak limited.
(ie worst case Duty Cycle of 7.4x10-4 and a Ks (Rotational Reduction Factor) of 1.36x10-2 = 1.007x10-5. For a peak limited radar this will be less that the ICNIRP S(av)/S(pk) ie 10/10000 = 0.001) NB: If it was 'greater than', then it would be an Average Limited emitter. (Dc*Ks< Sav/Spk = Peak limited and 10000 W/m2 instantaneous exposure applies) (Dc*Ks> Sav/Spk = Average Limited an 10W/m2 averaged over 6 minutes applies) Are you able to advise why our calculations are showing a peak limit, when the user manual states an Average limited system? Thanks for your help Tony |
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[TG11] Radar Safe Distamnce Calculations - TonyFry - 07-29-18 06:34 PM
RE: [TG11] Radar Safe Distamnce Calculations - Tom - Raymarine - Moderator - 08-14-18, 12:10 AM
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