. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 6 —RADAR \ND SATELLITE EQUIPMENT TRANSMITTER PULSE • ECHO PULSES SWEEP LINE PRECIPITATION ECHOES. FACE OF TUBE SCALE OF MILES ENGRAVED ON TRANS- PARENT OVERLAY Figure 6-1. — General appearance of A-type scan presentation as it would appear on the range in- dicator CRT. R-Scan Presentation The R-type scan is almost identical to the A-type. The difference between the two is that the A-scan presentation displays the total range starting at 0 range and ending at any one of several ranges selected; the R
. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. Chapter 6 —RADAR \ND SATELLITE EQUIPMENT TRANSMITTER PULSE • ECHO PULSES SWEEP LINE PRECIPITATION ECHOES. FACE OF TUBE SCALE OF MILES ENGRAVED ON TRANS- PARENT OVERLAY Figure 6-1. — General appearance of A-type scan presentation as it would appear on the range in- dicator CRT. R-Scan Presentation The R-type scan is almost identical to the A-type. The difference between the two is that the A-scan presentation displays the total range starting at 0 range and ending at any one of several ranges selected; the R-scan presenta- tion isolates a portion of the range scale and expands it. PPI-Scope Another type of display commonly used in radar is termed Plan Position Indicator (PPI). This display makes it possible to read range and bearing information simultaneously. A dia- gram of a basic PPI-scope is shown in figure Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Naval Education and Training Program Development Center; United States. Bureau of Naval Personnel. Washington : U. S. Dept. of Defense, Navy Dept. , Naval Education and Training Support Command
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