EE 4770 Homework 2 Due: 2 March 1998 Problem 1: Design a system, called the Portable Optical Orientation Helper, POOH , to determine the angle with respect to a beacon. POOH should determine the angle, in degrees, formed by north, the beacon, and the device, in a clockwise direction. For example, if POOH indicates 90 ◦ then the user is east of the beacon. 1 The beacon consists of a light surrounded by a non-dispersing gradient ﬁlter, which works as follows: The ﬁlter is transparent to light at a wavelength of 500 nm. The ﬁlter is positioned around the light so that for light at a wavelength of 700 nm the ﬁlter varies linearly from completely transparent, at an angle of 0 ◦ to completely opaque just before angle 360 ◦ .( A sw i
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