JRG-46 Rev.2

August 23, 2005

JRG 1A-1C-8B

DRAFTING GROUPS AND ACTION ITEMS

Three drafting groups have been formed. Correspondence for the drafting
groups will be conducted via e-mail. The Drafting Group leads will
establish e-mail groups.

##### **JRG-DG1: FMCW Modulated Waveforms**

Terms-of-Reference

1.  Review the current necessary bandwidth (-20 dB) and --40 dB
    bandwidth formulas for FMCW modulated waveforms; and, if
    appropriate, recommend more representative formulas. Priority 1.

2.  Clarify the definition of frequency deviation (B~d~) for FMCW
    waveforms. Priority 2

3.  Review the feasibility of the application of a 40 dB/decade roll-off
    from the --40 dB bandwidth for practical combinations of waveform
    parameters. Priority 2.

Priority 1 Milestone: December 15, 2005

Priority 2 Milestone: June 15, 2006

Relevant JRG Contributions: JRG-39

Lead contact: Leith Mudge, Australia

E-mail address: Leith.Mudge@defence.gov.au

##### **JRG-DG2: FM-Pulse Modulated Waveforms**

Terms-of-Reference

1.  Review the current necessary bandwidth (-20 dB) and --40 dB
    bandwidth formulas for FM-pulse modulated waveforms; and, if
    appropriate, recommend more representative formulas. Priority 1.

2.  Review the feasibility of the application of a 40 dB/decade roll-off
    from the --40 dB bandwidth with these new formulas for practical
    combinations of waveform parameters. Priority 2.

Priority 1 Milestone: December 15, 2005

Priority 2 Milestone: June 15, 2006

Relevant JRG Contributions: JRG-7, 10, 12, 13, 17, 19, 21, 32, 33, 37,
and 38)

Lead contact: Larry Brunson, U.S.

E-mail address: lbrunson@ntia.doc.gov

**[JRG-DG3: Magnetron Emission Masks:]{.underline}**

Terms-of-Reference

1\. Review the measured magnetron emission spectrum data to determine
whether there is sufficient data to reach a conclusion on whether more
stringent masks are achievable. Priority 1.

Priority 1 Milestone: December 15, 2005

Relevant JRG Contributions: JRG-14, 16, 20, 22, 40, 42

Lead contact: Adil Abbas, U.K.

E-mail address: adil.abbas@raymarine.com

Action items

+---+----------------------+------------+------------+----------------+
| T | Description          | Admin      | Milestone  | Status         |
| a |                      | istration/ |            |                |
| s |                      | Sector     |            |                |
| k |                      | Member     |            |                |
|   |                      |            |            |                |
| N |                      |            |            |                |
| o |                      |            |            |                |
| . |                      |            |            |                |
+---+----------------------+------------+------------+----------------+
| 1 | Provide a draft      |            |            |                |
|   | paper on radar       |            |            |                |
|   | architecture related |            |            |                |
|   | to pulse shaping to  |            |            |                |
|   | improve unwanted     |            |            |                |
|   | emission spectrum.   |            |            |                |
+---+----------------------+------------+------------+----------------+
| 2 | Provide a draft      | U.K.       |            |                |
|   | paper on radar       |            |            |                |
|   | architecture related | John       |            |                |
|   | to the ability to    | Holloway   |            |                |
|   | provide filtering to |            |            |                |
|   | improve unwanted     |            |            |                |
|   | emission spectrum.   |            |            |                |
+---+----------------------+------------+------------+----------------+
| 3 | Provide a paper on   | U.S.       | September  | Completed. See |
|   | ITU-R                |            | 2005       | JRG-47         |
|   | RadioRegulations     | Robert     |            |                |
|   | pertaining to the    | Hinkle     |            |                |
|   | requirement to       |            |            |                |
|   | contain the          |            |            |                |
|   | necessary bandwidth  |            |            |                |
|   | within the allocated |            |            |                |
|   | band.                |            |            |                |
+---+----------------------+------------+------------+----------------+
| 4 | Measurement of       | U.S.       |            |                |
|   | emission spectra of  |            |            |                |
|   | linear beam output   | Bjorn      |            |                |
|   | devices for various  | Rommen     |            |                |
|   | modulations (Non-FM  |            |            |                |
|   | pulse, FM pulse      |            |            |                |
|   | etc.).               |            |            |                |
+---+----------------------+------------+------------+----------------+

+---+----------------------+------------+------------+----------------+
| T | Description          | Admin      | Milestone  | Status         |
| a |                      | istration/ |            |                |
| s |                      | Sector     |            |                |
| k |                      | Member     |            |                |
|   |                      |            |            |                |
| N |                      |            |            |                |
| o |                      |            |            |                |
| . |                      |            |            |                |
+---+----------------------+------------+------------+----------------+
| 5 | Observations of the  | U.S.       | October    |                |
|   | effects of rise time |            | 2005       |                |
|   | on FM pulse spectrum | Larry      |            |                |
|   |                      | Brunson    |            |                |
+---+----------------------+------------+------------+----------------+
| 6 | Convert ITU-R radar  | U.S.       | October    |                |
|   | emission mask model  |            | 2005       |                |
|   | (JRG-30) into a      | Fred Najmy |            |                |
|   | Visual Studio.NET    |            |            |                |
|   | program.             |            |            |                |
+---+----------------------+------------+------------+----------------+