Figure 9 shows the probability of correct confirmation versus the SNR of the targets before pulse compression
; the results correspond to target 2.
Buckwalter, "Analog signal processing for pulse compression
radar in 90-nm CMOS," IEEE Transactions on Microwave Theory and Techniques, vol.
could significantly increase achievable peak power in generating such pulses.
The former operates at X band, steers electronically in azimuth and mechanically in elevation, has a 2.5[degrees]-3.5[degrees] half-power beamwidth, is low powered, and makes use of nonlinear frequency modulated pulse compression
; the latter operates at S band, is fully electronically steered using commutating beams around the cylinder (but is frequency steered in elevation for cost reduction), is high powered, and has 4.5[degrees] half-power beamwidth.
If we see the target of interest as a system, then the transmit weight vector [??] and the pulse compression
result [x.sub.s] can be viewed as the system input and output, respectively.
Alighale, "Sidelobes level improvement by using a new scheme used in microwave pulse compression
radars," Progress In Electromagnetics Research Letters, Vol.
Jeffrey Keeler, "Pulse compression
for weather radars," IEEE Transactions on Geoscience and Remote Sensing, vol.
The concept of Hamming scan algorithm has been employed for obtaining the pulse compression
sequences at larger lengths with good correlation properties [2,3].
It is also the only commercial radar that utilizes pulse compression
technology, providing a higher resolution display of true weather hazards, for greater accuracy at a longer range.'
The aircraft is configured to carry torpedoes and is fitted with state of the art pulse compression
radar, low frequency dipping sonar, red-warning receiver and Doppler navigation system.
The range-resolution disadvantage could be eliminated by the use of pulse compression
. High range resolution was restored by sending modulated transmissions that, after reception, could be compressed by matched receivers: an attractive technique, which, of course, not was free of charge.
Complex pulse compression
can be applied to a pulse without the need to manually perform complex calculations.