Sunday

LD-2000 TR47 / Type 730 / H/PJ12 / LR66 Engagement Radar

The LD-2000 SPAAG/SPAAGM is intended for point defence of fixed ground sites against low flying rotary and fixed wing threats, and has significant growth potential as a Counter-PGM (C-PGM) and Counter-RAM (C-RAM) terminal defence system. The design employs two radars, a TR-47 series  engagement radar for the gun mount, and an acquisition radar mounted on a telescoping mast.

NORINCO have confirmed that the tracking radar operates in J-band, estimated between 15.7 and 17.3 GHz, with a maximum cited range of 9 km. This would imply a maximum PRF of around 16,000 pps. There is also a coupled TV and IR tracker system on the weapon, that was used for acceptance trials, which were apparently successful. The acquisition radar functions in I-band, estimated between 8.8 and 9.7 GHz.

Following the trials, in an original format vehicle, it is now being offered for export.

As can be seen from numerous picture images, the I-band acquisition radar has now been integrated into the main LD-2000 combat vehicle (CV). There appears not to be an Intelligence and Communications Vehicle (ICV) any more, which gives the CV more freedom.  The I-band acquisition radar also has a new reflector with a dual horn feed, for improved vertical coverage, and a new turning motor which might imply a complete new I-band system.

According to Christopher F. Foss in JDW 25Nov09 p27;  the gun is a Type 730B 30mm 7-barrel Gatling with a max rate of fire of 4,200 rounds/min, over an effective range of 2.5 ~ 3.5 km. The weapon is loaded with 1,000 rounds, enough, apparently, for about 48 potential target engagements. As reported originally in the Chinese radars text, the gun is capable of firing armour-piercing discarding sabot (APDS), high explosive incendiary (HEI) and target practice (TP) rounds.

The limitation of the existing LD-2000 design is in its acquisition radar, which is not suitable for high speed low radar cross section targets, especially flown along steep trajectories. This precludes the use of the current LD-2000 configuration in C-RAM and C-PGM roles. The TR-47 series tracking radar has been used for naval shipboard defence applications and is claimed to be effective against Mach 2 low signature sea skimming threats, making it viable for land based C-RAM and C-PGM roles. The principal adaptation required to make the LD-2000 a highly capable C-RAM/C-PGM system is integration with a suitable acquisition radar design, such as the SLC-2 or newer Type 704 series counter-battery radars, for a narrower C-PGM role an existing air defence phased array such as the H-200 would be suitable.

TR-47G Engagement Radar
Export Desig: TR47G
Other Desigs: TR47C, Type 47G
Supplier: YMEIRI

Parametrics:
RF (MHz) 8,800 ~ 9,600
RF Agility 700 MHz
PRF (pps) -
PRI (μsecs) -
PD (μsecs) 0.3 ~ 0.4
Modulation Pulsed
ST Monopulse - Circular -
Antenna:
Beamwidth (H & V) 2º
Gain ≥ 37dB
Tracking accuracy:
Bearing ≤ 1mrad
Elevation ≤ 1 mrad
Range ≤ 5 m
Transmitter:
Peak power 120-150 kW
Receiver:
Noise Factor ≤9 dB
System reaction time ≤ 3s
MTI improvement factor ≥ 25dB


The existing acquisition radar is a low cost design suitable for airborne battlefield threats, but not the more challenging C-RAM and C-PGM roles.


Naval variants of the Type 703 are direct equivalents to the European Goalkeeper CIWS.