pad

Click to enlarge

V.18:7 (20-29):Optimal Detrending by John F.Ehlers

Optimal Detrending

Did you know that a detrended signal, combined with an optimum smoothing filter, can produce an extremely responsive oscillator-type indicator that catches every cyclic turn as it happens? It’s true! Here are the details. All pulse echos here must be a jillion ways to detrend price data, and a good chunk of them have already been explored in print. Given that, I had to have a new and significant approach to the subject - and here it is. I discovered that a detrended signal, combined with an optimum smoothing filter, can produce an extremely responsive oscillator-type indicator.

I borrowed the concept of this new detrending approach for the markets from radar circuit designs, so to understand how it works, let’s first take a look at how radar works.

To refresh your memory, radar (which is an acronym, sort of, for radio detecting and ranging) works by transmitting a high-powered radio-frequency (RF) pulse and listening for the return echoes from various targets. RF energy travels at the speed of light, and so the round-trip time for an echo comes out to 12.4 microseconds per mile. The distance of the target from the transmitter is determined by measuring the time it takes for the echo to return. After sufficient time has elapsed so no more echoes are expected, the radar transmits another pulse. The process is repeated, and the time between pulses is referred to as the pulse repetition interval (PRI).


\V18\C07\060OPT.PDFpad$3.95pad



FOR THOSE ORDERING ARTICLES SEPARATELY:
*Note: $2.95-$5.95 Articles are in PDF format only. No hard copy of the article(s) will be delivered. During checkout, click the "Download Now" button to immediately receive your article(s) purchase. STOCKS & COMMODITIES magazine is delivered via mail.


Take Control of Your Trading.
Professional Traders' Starter Kit
All these items shown below only $495!
  • 5-year subscription to Technical Analysis of STOCKS & COMMODITIES, The Traders' magazine. (Shipping outside the US is extra. Washington state addresses require sales tax based on your locale.)
  • S&C on DVD 10.25 plus next year's upgrade FREE!
  • 5-year subscription to Traders.com Advantage.
  • 5-year subscription to Working Money.
  • Free book selection.
  • Save up to 54% by purchasing today. Limited time offer. By purchasing today you also receive your choice of one volume from the Professional Traders' Series (Volumes 1-17 or Charting The Stock Market) for FREE!

    NOTE: Use the "comment" field during checkout to tell us which book you would like to receive.

    Click Here to Order
    You save $502.31 plus the value of the book you choose over the regular price of these items. Offer ends soon.



    Stocks & Commodities magazine Copyright © 1996-2008 Technical Analysis, Inc. All rights reserved. Read our privacy statement. Visit our main Website. www.traders.com

    Phone 1(800) 832 4642 or (206) 938 0570