Electrical and Computer Engineering ETDs

Publication Date

Fall 9-30-1966


Excerpt from the introduction:

This paper presents an analysis of the signal processing in a continuous wave, fixed-range, radio altimeter which utilizes random angle modulation, i.e., the modulating function is a sample function from a random process. The mathematical model of the altimeter is shown in block diagram form in Figure 1, and the physical situation in which the altimeter operates is illustrated in Figure 2. As shown in Figure 2, the altimeter is assumed to be on the vehicle "V" which has a relative velocity v with respect to the reflecting plane P. The velocity vector might have any orientation, but for simplicity we shall assume that it is colinear with the unit vector iy. We assume that the altimeter is turned on when "V" reaches an altitude ho + Δh, so that the first reflected signal reaches "V" at altitude ho. It is then required to provide an indication when "V" reaches altitude h1. Regardless of whether or not the altimeter functions properly, we assume that it ceases to operate when "V" reaches plant P. Thus we consider only the interval of time required for "V" to travel from ho to the plant P.

Document Type


Degree Name

Electrical Engineering

Level of Degree


Department Name

Electrical and Computer Engineering

First Committee Member (Chair)

Arnold H. Koschmann

Second Committee Member

Ahmed Erteza

Third Committee Member

Jovan Djuric