Pulse coding

From Glossary of Meteorology

pulse coding

The use of modulation within a radar or sodar pulse to increase the range resolution beyond that normally achievable with a pulse of the same length.

In a common technique, the phase of the transmitter carrier is inverted several times in an optimized sequence during the transmitted pulse. This modulation is undone by a complementary process in the receiver to produce an effective pulse length narrower by a factor equal to the number of inversions in the transmitted pulse sequence.
See pulse compression.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact permissions@ametsoc.org. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.