TECTechnics Classroom   TECTechnics Overview

RADAR is an acronym for Radio Detecting And Ranging. Short- wavelength microwaves are used in radar to locate objects and monitor speed.

(a) Explain what is meant by bistatic, monostatic and quasi-monostatic radar.

(b) The basic quantity measured by most radars, is target range. Write the formula for calculating the target range for: bistatic and monostatic radar.

The strings: S7P4A44 (motion - oscilatory)

The math:
Pj Problem of Interest is of type motion (oscilatory - wave motion). Transmitter sends radio waves pulse in motion to object. Radio waves are reflected and pulse sent in motion to receiver.

Bistatic: location of transmitting antena is different from location of receiving antenna from the perspective of the target object (figure 22.3). For example, ground transmitter and airborne receiver.
Monostatic: transmitting antenna and receiving antenna are colocated from the perspective of the target object. For example, the use of the same antenna to transmit and receive.
Quasi-Monostatic: location of transmitting antenna is very close to location of receiving antenna (i.e, they are slighly separated) from the perspective of the target object.

(b)i Bistatic Range Equation: Rt + Rr = cTR.
Where Rt is range between transmitter and target object;
Rr is range between receiver and target object;
TR is round trip travel time of a pulse.
c is velocity of light (3 x 108)

(b)ii Monostatic Range Equation: R = (cTR)/2.
Where R is range between transmitter and target object;
In this case, Rt = Rr = R;
TR is round trip travel time of a pulse;
c is velocity of light (3 x 108).

Blessed are they that have not seen, and yet have believed. John 20:29