Radar Frequency Selection for Remote Sensing

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Which radar frequency is suitable for ice discrimination due to its small wavelength?

X-band (correct)

P-band

L-band

C-band

What is the main advantage of using L-band for geology mapping?

Good component availability

Ability to discriminate small features

Better foliage penetration

Ability to map large features (correct)

Why is C-band considered a good compromise for radar frequency?

It is a good balance between different application factors (correct)

It provides the best foliage penetration

It is the most difficult to process

It offers the longest wavelength

What is the main advantage of using P-band for radar applications?

Better foliage penetration Signup and view all the answers

What is a system design consideration for low frequency radar systems?

Need for larger antennas and feeds Signup and view all the answers

What is a common application of X-band radar?

Military reconnaissance Signup and view all the answers

Which radar band is commonly used for geology mapping?

L-band Signup and view all the answers

What is a compromise of using C-band radar?

It is a good balance between resolution and penetration Signup and view all the answers

What is an advantage of using P-band radar?

It can penetrate dense foliage Signup and view all the answers

What is the general relationship between radar frequency and wavelength?

Higher frequency means shorter wavelength Signup and view all the answers

What is a consequence of higher altitude of spaceborne systems?

Steeper incident angles Signup and view all the answers

What is an advantage of satellite SARs over airborne SARs?

Lower operating costs Signup and view all the answers

What is a limitation of swath width in SAR systems?

Range ambiguities and data handling capacity Signup and view all the answers

What is the purpose of ScanSAR mode in RADARSAT-1?

To get extra wide swaths Signup and view all the answers

What is the effect of reducing resolution in RADARSAT-1?

Large swath widths per beam Signup and view all the answers

What is a classic element used to represent discrete scattering?

A corner reflector Signup and view all the answers

What is the primary characteristic of a distributed scatterer?

Multiple small areas or surfaces that scatter microwaves Signup and view all the answers

How does the incident angle affect the appearance of a surface on radar imagery?

A surface appears rougher at higher incident angles Signup and view all the answers

What is the general definition of a rough surface in terms of radar wavelength?

A height variation of one-half the radar wavelength Signup and view all the answers

What type of surface will usually appear brighter on radar imagery than a smoother surface of the same material?

A rough surface Signup and view all the answers