The Transmitter Antenna Gain Factor (Monostatic SAR) calculator computes the gain factor based on the effective area of the receiver antenna and nominal wavelength of the radar.
INSTRUCTIONS: Choose units and enter the following:
- (Ae) Effective Area of the receiver antenna
- (λ) Nominal Wavelength of the radar
Transmitter Antenna Gain Factor (GA): The gain factor is returned in decibels (dB). However, this can be automatically converted to a real number via the pull-down menu.
The Math / Science
The Transmitter Antenna Gain Factor for a Monostatic Synthetic Aperture Radar equation used in this calculator is:
`G_A = (4 pi A_e) / lambda^2`
where:
- GA = Transmitter Antenna Gain Factor
- Ae = Effective area of the receiver antenna
- λ = Nominal Wavelength of the radar
This equation calculates the transmitter antenna gain factor1 for a monostatic synthetic aperture radar. This equation is most helpful in the context of calculating the Signal-to-Noise of a Synthetic Aperture Radar.
- SNR Gain Due to Azimuth Processing (coherent pulse integration)
- SNR Gain Due to Range Processing (pulse compression)
- Target Radar Cross Section
- Monostatic SAR Transmitter Antenna Gain Factor
- Radar Atmospheric Loss
- SAR Duty Factor
- Grazing Angle
- Slant Range
- Slant Range (Beta Angle)
- ^ Performance Limits for Synthetic Aperture Radar - Second Edition. Sandia National Laboratories, Albuquerque, NM. Printed February 2006.