JRC ECDIS - Attribute: Periodic Date Start; Attribute: Radar Wave Length

B-107 Appendix B Menu List and Materials
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APP B
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APP C
Attribute: Periodic date start
Acronym: PERSTA Code: 119
Attribute type: A
Definition:
The start of the active period for a seasonal object (e.g. a buoy). See also 'date start'.
References:
INT 1: IQ71;
M-4: 460.5;
Indication:
the 'periodic date, start' should be encoded using 4 digits for the calendar year (CCYY), 2 digits
for
the month (MM) (e.g. April = 04) and 2 digits for the day (DD). When no specific year is required
(ie
the object is deployed at the same time each year) the following two cases may be considered:
- same day each year: --MMDD
- same month each year: --MM
This conforms to ISO 8601: 1988.
Format:
CCYYMMDD (full date, mandatory)
--MMDD (same day each year, mandatory)
--MM (same month each year, mandatory)
Example:
--04 for an operation starting in April each year.
Remarks:
No remarks.
Attribute: Radar wave length
Acronym: RADWAL Code: 126
Attribute type: A
Definition:
The distance between two successive peaks (or other points of identical phase) on an
electromagnetic wave in the radar band of the electromagnetic spectrum.
References:
INT 1: IS 3.1-4;
M-4: 486.3-4;