Radar systems detect the target based upon the average power incident upon it. This is due to the continuous behavior of noise which tends to mask the signal. Heating of the target becomes averaged out during the complete period of the base pulse which in this case is about 1 milisecond.
Of course, the reflected wave must be generated by instantaneous currents on the target surface as you suggest. If the problem you are analyzing occurs during the 1 microsecond time frame then it is quite possible for it to be demonstrated. The skin effect also comes into consideration at the high RF frequencies which tends to reduce penetration of the signal into the target. Better conductivity of the material decreases the dept rapidly. A true Doppler radar would have the full heating effect due to the RF maximum power level as long as the antenna pattern illuminates the target you are considering. Also, the pulsed radar pattern of the radar mentioned impacts upon your desired target for a small portion of the dish rotation time. The average target heating must be adjusted accordingly. I do not understand the nature of the damage that you are considering with your research. If it is associated with the average heating as with a microwave oven then the pulse duty cycle, etc. needs to be integrated into the equations. My comments earlier were directed toward clarifying the difference between a true Doppler radar and a more of less standard pulsed system. Dave -----Original Message----- From: ChemE Stewart <[email protected]> To: vortex-l <[email protected]> Sent: Mon, May 12, 2014 7:17 am Subject: Re: [Vo]:Vector Potential Wave Radio David, the ASR-9 is an airport survellience radar. That is correct about the gain, weather/military doppler radar gains are 45-50 dbi, more focused dishes. The instantaneous pulses are > 1,000,000 watts but they are only on for 1/1000 of each second. Does nature average that high power pulse over 1 second like you are doing? And if it does, how does nature do that? Does it induce instantaneous electrical currents? Nature operates at the speed of light, right? A lot goes on in nature in 1/1000 of a second that we don't even see. On Sunday, May 11, 2014, David Roberson <[email protected]> wrote: The specifications for the radar system below are typical of a pulsed radar system and not what I would expect from a standard Doppler radar. The duty cycle appears to be .1% for the unit listed whereas a Doppler radar is CW. The average power is 1300 watts of RF into the antenna, I assume. The gain of the antenna may be 34 dB relative to an isotropic radiator. Someone might be thinking of a pulsed Doppler radar which measures the change in transmit frequency of the returning pulses to get target velocity information. That type of radar is not a standard Doppler. Dave -----Original Message----- From: Eric Walker <[email protected]> To: vortex-l <[email protected]> Sent: Sun, May 11, 2014 9:18 pm Subject: Re: [Vo]:Vector Potential Wave Radio Stewart, I have glanced at your web site. I have not taken a close look at your research, but I would not be surprised if you ended up being onto something about doppler radar being a source of hypoxia, oxygen free radicals and the death of nearby animal and plant life. You also have a theory of dark matter, and a hunch that dark matter is indirectly responsible for the conclusions concerning doppler radar that you arrive at in your informal research. On the connection to dark matter, I personally have no opinion. I am skeptical, however, that your research is sufficient to establish any kind of linkage between the effects of doppler radar and dark matter, however. In light of this doubt, I think you might be able to get your investigation into doppler radar out to a wider audience if you did not combine it with the question of dark matter. Adding dark matter into the mix asks too much of people in their suspension of disbelief for them to be able to give much credibility to your doppler radar hunch, even if both hunches ended up being true. Eric On Sun, May 11, 2014 at 5:55 PM, ChemE Stewart <[email protected]> wrote: Radar/Call Sign MHT Model ASR-9 Max Pulsed Power (Watts) 1,300,000 Gain (dBi) 34 Frequency (MHz) 2,800 RPM 12.5 Max Power Density (W/m2) @ 10 km 10.39 Pulse Duration(uSec) 1.00 Pulse Repition Factor (Hz) 1,000 Range Est. (Miles) 60 Latitude 42.937248 Longitude -71.437286 FIPS 33011 County Hillsborough State NH
