The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
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commanding dispatch. For system configuration and connected 
relation, see Figure 2. 
ultrashort 
communication 
GPS 
Control Center 
~ J i 
t 
i 
Figure 2. Hardware configuration for forest fire control 
commanding and decision making system 
Data transmission equipment and computer use RS - 232C 
interface, which is formed by data converter, data transmission 
ultra-short wave broadcasting station, outdoor high gain 
antenna, AC and DC stabilized voltage supply and special 
software package and others. It can be realized to contact with 
mobile terminal via the high power radio station and FFSK 
synchronous data transmission mode. 
Mobile terminal adopts an integrative machine of hand-held 
GPS positioning and communication to make interphone, 
communication control unit and GPS receiver perfectly 
combined together, convenient for carrying and operation. 
GPS equipment actions in fire control command are mainly 
showed in the following several aspects: 
1. It is used to conduct march of fire suppression team. What 
GPS satellite positioning tracking system accomplishes is a 
real-time tracing, whose locating points and march track can 
directly be showed in electronic sand map of control center. If 
march route of fire suppression troop appears a warp, via 
instant show of march track and direction, headquarters can 
contact the troop quickly and correct the error in time, thereby 
warrant troop to walk on the best route in shortest distance and 
rush for fire field in the most short time. It entirely solves the 
problem of former troop disorientation in mountain at the same 
time. Control center can instantly announce the surrounding 
landform, relief and other geo-information in the march route 
by interphone to remind the fire fighting crew to tend towards 
benefit and avoid harm, which plays an important role for fire 
suppression troop in marching, especially for safety of a night 
advance team. 2 
2. It is used to track and monitor for the fire suppression 
development situation. System can carry out a real-time 
monitoring in overall process and omnibearing and master time 
of start, on route and arrival of fire suppression team at any 
moment, convenient for troop to direct and arrange prevention 
in time after arrival to avoid to arrange arms out of time and 
delay fire suppression opportunity. It can real-time observe 
situation of arriving the site of fire suppression team and 
completed process of entire fire suppression working so as to 
carry out adjustment with different situations in time, thereby 
procure an optimal fire suppression effect. By using this system 
in reasonableness when in fire field disinterring, it is 
convenient for implementation and surveillance of 
responsibility. Responsibility section located by this system can 
be directly reflected in the control center, so can its disinterring 
track, Control center can master the disinterring situation of 
each responsibility subgroup and thereby validly avoid a fire 
field afterburning because of a non-attendance disinterring. 
3. It is used to exactly calculate fire-field area. After mountain 
fire is stifled, during arranging corps for guard of fire field, this 
system can directly display the formed track of guard process 
on electronic sand map of fireproofing control center, by which 
it can figure out the fire-field area in the first time and shorten 
the calculation time. It substitutes that formerly person 
specially assigned was sent to calculate the fire scene area after 
fire suppression is terminated, reducing the devotion of 
manpower and material resources and indirectly saving the fire 
suppression expense. In addition, digitized processing is more 
precise than manual calculation, slashing the estimation error. 
5. CONCLUSIONS 
Via application practice in Jiaohe city of Jilin province, it is 
proved that it is a good practice to apply 3S technology to 
forest fire control command, possessing merits of saving cost, 
quick and high efficiency, science and exactness and others. It 
is suggested that it should be popularized in departments of 
forestry. 
REFERENCE 
Zhang Yongsheng, 2000. Remote sensing image information 
system, Science Publishing House. 
Chen Shupeng and others, 2000. Geographic information 
system introduction, Science Publishing House, Beijing. 
Wu Lun, Liu Yu, Ma Xiujun, Wei Zhongya, Tian Yuan, 2002. 
Method and application of geographic information system 
principle, Science Publishing House. 
Zhao Changsheng, Che Yanguo and others, 2002. digital city 
and 3S technology, Journal of Liaoning Technical University 
(Natural Science Edition), 21 (1). 
Hanjiayuan forestry Website of Heilongjiang, Daxinganling. 
http : //www. hj y. com. cn