本帖最后由 LJQC 于 2011-10-29 14:24 编辑
原贴地址：http://www.benchmarksims.org/forum/content.php?154-No-HARM-No-Foul-A-New-Way-of-Destroying-Radars
BMS features completely rewritten HARM modes and some updates to the Hands-On controls. The AGM-88 HARM can now be employed by using the previously coded HTS (for HTS capable F-16s) or via the HARM WPN page for HTS or non-HTS capable aircraft. Two modes are available for employment: Position Known (POS) and HARM As a Sensor (HAS). The third mode, Data Link (DL) is not implemented (at this time).
Hands-On Controls
Cursor enable – toggles between POS and HAS modes.
TMS Right – Selects first valid threat, a 2nd TMS Right steps to the next threat
TMS Left – Toggles between threat tables
Pinky Switch – POS Mode cycles the POS flight profile; HAS Mode cycles the FOV
TMS Aft – Deselects the currently selected threat
HARM WPN Page Modes
POS mode: In POS mode, aircraft attitude and target position are passed to the HARM. After launch, the missile flies to the near reported position of the emitter and then activates its seeker to search for the handed-off threat. POS mode has 3 flight profiles available:
1) Equations of Motion (EOM): Provides threat specific off-axis capability with a narrow FOV when the seekerhead is activated.
2) Pre-briefed (PB): Provides location specific, on-axis capability with a wide FOV. PB is used for long range delivery with high confidence target location.
3) Range Unknown (RUK) (aka Target of Opportunity): Provides threat specific off-axis capability with a wide FOV. Used when target confidence is low. (Degraded state of EOM).
Each mode controls at which point the missile will activate its seeker and what will be the seeker's FOV. The most accurate mode is EOM. It will activate the seeker at 5NM from the handed-off steerpoint with a 40 deg FOV. This mode should only be used when the location of the emitter is well-known—i.e., emitter position collocated with a steerpoint. In PB mode, the seeker will activate at 15NM from the handed off steerpoint with a 120 deg FOV. This mode should be used when the position of the emitter is relatively close to the steerpoint. In the last mode, RUK, the seeker is activated immediately after launch with a 120 deg FOV. This is mode is used for self-defense as the range is completely unknown.
The POS Mode HARM Flight Profiles
In HAS mode, the pilot uses the HARM seeker head to detect threats. Detected threats are displayed left to right in the Detected Threat Status Box (DTSB). The pilot uses the cursor enable to slew the cursors and designate/hand-off a threat to the HARM. After a threat is handed-off to the missile, the display changes to represent missile boresight and the threat video responds to aircraft pitch, roll and azimuth changes. “RDY” is displayed after hand-off is complete.
Operational Notes:
General
- The WPN page will keep working even without missiles on-board as long as the ALIC HARM power is on.
HAS
- HAS search mode will use the currently selected threat table to detect threats. The threats of the current table will appear on the left side of the MFD (next to each OSB). HAS delay timer will now be affected from all threats and not only the ones detected (simulating real system delay for
sorting all emissions). HAS search mode will not show more than 10 threats. Search filter page (OSB #4 in the search page) will show the current table’s threats on the left side. Clicking on the corresponding threat’s OSB will select/deselect that threat from being detected and will reset the HAS timer and of
course affect the search time. HAS FOV (OSB #3 in the search page) will now cycle through all modes – Wide (default), Center, Left and Right. The selected FOV will force the HARM to detect threats accordingly. Wide will search to a certain range (dependent on altitude) in all directions, Center will
search at half of that range, Left and Right modes will search only Left/Right sides accordingly. Each time the FOV is changed the HARM timer will reset and all threats will blank (new search parameters). Hand-off time takes 5 seconds and will now affect missile tracking. Missiles fired before the threat was
handed-off will probably miss, so wait for the "RDY" text to show-up after hand-off. HAS hand-off page will show up to 4 threats of the same type as the handed-off threat.
POS
- POS mode pre-launch data is visible ONLY for the currently selected station, so will not shown for both even if threats were handed-off to both missiles.
- Post-launch POS data will be shown for each station above the LSDL, same position horizontally as the Pre-launch data. Now can track 2 missiles because the page will not blank out.
- The POS WP will always be the current working STP. Even if a station is pre-programmed, when changing current STP, the WP on the Pre-launch data set will update accordingly.
- If a station isn't pre-programmed then the WP will not shown for it.
- Target Isolate mnemonic ON/OFF isn't implemented but now will be set to ON by default, as in real this is what forcing the missile to look only for the selected handed-off threat regardless of secondary threats or tertiary table selection. Such options aren't (yet) implemented so for now ON state for Target Isolate matches the system behavior.
High Off-Axis Shots
- There are still problems with trying to take high off-axis shots. Without further modification of the missile guidance code, missile shots taken at too high of angles may not make it to their targets, and the timing displayed on the MFD will likely be inaccurate.
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发表于 2011-10-29 14:21:19
发表于 2011-10-29 15:14:03
