CW Projectile Tracking Range Analysis
Abstract
The conventional low-power CW doppler projectile tracking radar is investigated through simulation. The power requirement for full range tracking with real-time track data processing stopped within 160 m of the point of impact is obtained. This power can be lowered by a factor of more than 4 if a set of three switchable filters is utilized. At a proving ground, it is always desirable to record the trajectories of test-fired munitions for later analysis. This is especially true when anomalies occur. Continuous wave (CW) radars have often been adopted for this purpose because of their simplicity. Compared to a pulsed radar of similar range performance, a CW radar has no modulator in its transmitter, hence no range gating is necessary in its receiver. Furthermore, a CW radar has a bandwidth corresponding to the doppler shift, which rarely exceeds 100 kilo-Hertz (kHz) while a pulsed radar has a band width in the mega- Hertz range. Thus a CW radar can be designed to carry out coherent signal integration over a longer time interval. This increases the integration gain and lowers the required transmitter power for the CW radar. High gain antennas of very narrow beamwidths are also used to reduce the transmitter power requirement. It is important to aim such antennas accurately on the target. To acquire the bearing and elevation angles of a target directly, several receiving feeds together with complicated comparator and multiple data channels are needed. Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1989
- Accession Number
- ADA223708
Entities
People
- Yen-chun Feng
Organizations
- Naval Postgraduate School