Description of the radar set, tactical-technical characteristics
Figure 1: AN/TPS-21
|frequency:||9375 ±30 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||1 600 Hz|
|pulsewidth (τ):||6.4 µs|
|peak power:||4 … 7 kW|
|average power:||2 … 4 W|
|instrumented range:||18.3 km|
|beamwidth:||β= 10° ;ε= 3°|
|hits per scan:|
|antenna rotation:||1.5 min⁻¹|
Radar Set AN/TPS-21 is lightweight, portable, operating in I-Band battlefield surveillance equipment that will search for and detect moving ground targets.
A characteristic audio signal with a frequency variation dependent upon the speed and direction of the moving target is the 'ontarget' indication. It is capable of an automatic search or 'sector scan' function in which a terrain area, with a depth of 880 yards and a width variable from 30 to 140 degrees or a continuous 360 degrees, is scanned for evidence of moving targets. In addition, the equipment may be manually operated to follow the target and indicate its range and azimuth. The transmitter used a magnetron.
- Military Standardization Handbook United States Radar Equipment Manual TM 11-487C-1 1965, p. 517ff