September 15, 1999 Page 5 of 13. 3 Sampling of band-pass signals. 3.1 Introduction. The Nyquist sampling theorem states that to get a unique representation of the frequency. content of a signal, the signal must be sampled at a rate twice the frequency of the highest. frequency component of the signal.
A quarter section, often shortened to quarter, is an area of one-fourth of a square mile, or 160 acres (0.65 km2). It was a common size of a tract under Homestead Acts in the United States and the Dominion Land Survey in Canada.
Each 160-, 40- and 10-. acre quarter is designated as the northeast, northwest, southwest, or southeast quarter (a, b, c, d respectively). The terms cadastral location and legal. description both refer to a method of. locating land according to a rectangular. coordinate system commonly known as the.